From 699d2df521ee26e343c53505a2ac1d546ba1965e Mon Sep 17 00:00:00 2001 From: antelder Date: Sat, 28 Mar 2009 09:46:58 +0000 Subject: Create M2 relese branch git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@759448 13f79535-47bb-0310-9956-ffa450edef68 --- .../tuscany/sca/databinding/DataBinding.java | 91 ++ .../sca/databinding/DataBindingExtensionPoint.java | 74 ++ .../apache/tuscany/sca/databinding/DataPipe.java | 46 + .../sca/databinding/DataPipeTransformer.java | 29 + .../DefaultDataBindingExtensionPoint.java | 243 ++++++ .../DefaultTransformerExtensionPoint.java | 306 +++++++ .../apache/tuscany/sca/databinding/Mediator.java | 68 ++ .../tuscany/sca/databinding/PullTransformer.java | 38 + .../tuscany/sca/databinding/PushTransformer.java | 36 + .../tuscany/sca/databinding/SimpleTypeMapper.java | 46 + .../sca/databinding/TransformationContext.java | 95 +++ .../sca/databinding/TransformationException.java | 65 ++ .../tuscany/sca/databinding/Transformer.java | 51 ++ .../sca/databinding/TransformerExtensionPoint.java | 81 ++ .../tuscany/sca/databinding/WrapperHandler.java | 78 ++ .../tuscany/sca/databinding/XMLTypeHelper.java | 68 ++ .../sca/databinding/annotation/DataBinding.java | 56 ++ .../sca/databinding/annotation/DataType.java | 43 + .../externalizable/ExternalizableDataBinding.java | 39 + .../sca/databinding/impl/BaseDataBinding.java | 110 +++ .../sca/databinding/impl/BaseTransformer.java | 52 ++ .../tuscany/sca/databinding/impl/DOMHelper.java | 163 ++++ .../sca/databinding/impl/DirectedGraph.java | 452 ++++++++++ .../databinding/impl/Group2GroupTransformer.java | 94 ++ .../sca/databinding/impl/GroupDataBinding.java | 103 +++ .../impl/Java2SimpleTypeTransformer.java | 70 ++ .../tuscany/sca/databinding/impl/MediatorImpl.java | 182 ++++ .../sca/databinding/impl/PipedTransformer.java | 70 ++ .../impl/SimpleType2JavaTransformer.java | 89 ++ .../sca/databinding/impl/SimpleTypeMapperImpl.java | 401 +++++++++ .../impl/TransformationContextImpl.java | 113 +++ .../sca/databinding/impl/XSDDataTypeConverter.java | 945 +++++++++++++++++++++ .../javabeans/DOMNode2JavaBeanTransformer.java | 97 +++ .../javabeans/Java2XMLMapperException.java | 69 ++ .../javabeans/JavaBean2DOMNodeTransformer.java | 79 ++ .../JavaBean2XMLStreamReaderTransformer.java | 68 ++ .../javabeans/JavaBean2XMLTransformer.java | 262 ++++++ .../javabeans/JavaBeansDataBinding.java | 139 +++ .../javabeans/JavaExceptionDataBinding.java | 35 + .../javabeans/SimpleJavaDataBinding.java | 79 ++ .../javabeans/XML2JavaBeanTransformer.java | 329 +++++++ .../javabeans/XML2JavaMapperException.java | 76 ++ .../sca/databinding/util/DataTypeHelper.java | 165 ++++ .../tuscany/sca/databinding/util/LRUCache.java | 88 ++ .../databinding/xml/BeanXMLStreamReaderImpl.java | 296 +++++++ .../sca/databinding/xml/DOMDataBinding.java | 71 ++ .../sca/databinding/xml/DOMWrapperHandler.java | 141 +++ .../sca/databinding/xml/DOMXMLStreamReader.java | 36 + .../sca/databinding/xml/DOMXmlNodeImpl.java | 156 ++++ .../xml/DelegatingNamespaceContext.java | 310 +++++++ .../sca/databinding/xml/InputSource2Node.java | 67 ++ .../sca/databinding/xml/InputSource2SAX.java | 65 ++ .../sca/databinding/xml/InputStream2Node.java | 69 ++ .../sca/databinding/xml/InputStream2SAX.java | 64 ++ .../xml/NameValueArrayStreamReader.java | 403 +++++++++ .../databinding/xml/NameValuePairStreamReader.java | 347 ++++++++ .../tuscany/sca/databinding/xml/NamedProperty.java | 59 ++ .../databinding/xml/NilElementStreamReader.java | 279 ++++++ .../sca/databinding/xml/Node2OutputStream.java | 68 ++ .../sca/databinding/xml/Node2SimpleJavaType.java | 45 + .../databinding/xml/Node2SourceTransformer.java | 61 ++ .../tuscany/sca/databinding/xml/Node2String.java | 62 ++ .../tuscany/sca/databinding/xml/Node2Writer.java | 67 ++ .../sca/databinding/xml/Node2XMLStreamReader.java | 64 ++ .../tuscany/sca/databinding/xml/Reader2Node.java | 67 ++ .../tuscany/sca/databinding/xml/Reader2SAX.java | 60 ++ .../tuscany/sca/databinding/xml/SAX2DOM.java | 249 ++++++ .../tuscany/sca/databinding/xml/SAX2DOMPipe.java | 81 ++ .../sca/databinding/xml/SimpleJavaType2Node.java | 71 ++ .../sca/databinding/xml/SimpleXmlNodeImpl.java | 112 +++ .../databinding/xml/Source2NodeTransformer.java | 69 ++ .../databinding/xml/Source2ResultTransformer.java | 63 ++ .../databinding/xml/Source2StringTransformer.java | 68 ++ .../sca/databinding/xml/StAX2SAXAdapter.java | 256 ++++++ .../sca/databinding/xml/StAXDataBinding.java | 53 ++ .../tuscany/sca/databinding/xml/StAXHelper.java | 86 ++ .../sca/databinding/xml/StreamDataPipe.java | 65 ++ .../tuscany/sca/databinding/xml/String2Node.java | 60 ++ .../tuscany/sca/databinding/xml/String2SAX.java | 61 ++ .../databinding/xml/String2SourceTransformer.java | 62 ++ .../databinding/xml/String2XMLStreamReader.java | 55 ++ .../databinding/xml/WrappingXMLStreamReader.java | 100 +++ .../sca/databinding/xml/Writer2ReaderDataPipe.java | 63 ++ .../databinding/xml/XMLDocumentStreamReader.java | 482 +++++++++++ .../databinding/xml/XMLFragmentStreamReader.java | 53 ++ .../xml/XMLFragmentStreamReaderImpl.java | 857 +++++++++++++++++++ .../sca/databinding/xml/XMLGroupDataBinding.java | 57 ++ .../sca/databinding/xml/XMLStreamReader2Node.java | 75 ++ .../sca/databinding/xml/XMLStreamReader2SAX.java | 70 ++ .../databinding/xml/XMLStreamReader2String.java | 57 ++ .../sca/databinding/xml/XMLStreamSerializer.java | 287 +++++++ .../tuscany/sca/databinding/xml/XMLStreamable.java | 37 + .../sca/databinding/xml/XMLStringDataBinding.java | 50 ++ .../tuscany/sca/databinding/xml/XmlNode.java | 69 ++ .../sca/databinding/xml/XmlNodeIterator.java | 355 ++++++++ .../databinding/xml/XmlTreeStreamReaderImpl.java | 531 ++++++++++++ 96 files changed, 13294 insertions(+) create mode 100644 branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataBinding.java create mode 100644 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a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataBinding.java new file mode 100644 index 0000000000..7c4ed35eb3 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataBinding.java @@ -0,0 +1,91 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding; + + +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; + +/** + * DataBinding represents a data representation, for example, SDO, JAXB and AXIOM + * + * @version $Rev$ $Date$ + */ +public interface DataBinding { + /** + * A special databinding for input message of an operation + */ + String IDL_INPUT = "idl:input"; + /** + * A special databinding for output message of an operation + */ + String IDL_OUTPUT = "idl:output"; + /** + * A special databinding for fault message of an operation + */ + String IDL_FAULT = "idl:fault"; + /** + * The name of a databinding should be case-insensitive and unique + * + * @return The name of the databinding + */ + String getName(); + + /** + * Introspect and populate information to a DataType model + * + * @param dataType The data type to be introspected + * @param operation The operation + * @return true if the databinding has recognized the given data type + */ + boolean introspect(DataType dataType, Operation operation); + + /** + * Introspect the data to figure out the corresponding data type + * + * @param value The object to be checked + * @param operation The operation + * @return The DataType or null if the java type is not supported by this databinding + */ + DataType introspect(Object value, Operation operation); + + /** + * Provide a WrapperHandler for this databinding + * @return A wrapper handler which can handle wrapping/wrapping for this databinding + */ + WrapperHandler getWrapperHandler(); + + /** + * Make a copy of the object for "pass-by-value" semantics. + * + * @param object source object to copy + * @param dataType The data type + * @param operation The operation + * @return copy of the object passed in as argument + */ + Object copy(Object object, DataType dataType, Operation operation); + + /** + * Get the XML type helper for Java types + * @return The databinding-specific XML type helper class + */ + XMLTypeHelper getXMLTypeHelper(); + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataBindingExtensionPoint.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataBindingExtensionPoint.java new file mode 100644 index 0000000000..2ff5d866b4 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataBindingExtensionPoint.java @@ -0,0 +1,74 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + + +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; + +/** + * An extension point for data binding extensions. + * + * @version $Rev$ $Date$ + */ +public interface DataBindingExtensionPoint { + + /** + * Register a data binding + * + * @param dataBinding + */ + void addDataBinding(DataBinding dataBinding); + + /** + * Look up a data binding by id + * + * @param id The name of the databinding + * @return The databinding + */ + DataBinding getDataBinding(String id); + + /** + * Unregister a data binding + * + * @param id + * @return The unregistered databinding + */ + DataBinding removeDataBinding(String id); + + /** + * Introspect the java class to figure out what DataType supports it. + * + * @param dataType The initial data type + * @param operation TODO + * @return A DataType representing the java type or null if no databinding + * recognizes the java type + */ + boolean introspectType(DataType dataType, Operation operation); + + /** + * Introspect the value to figure out the corresponding DataType + * + * @param value The object value + * @param operation TODO + * @return A DataType representing the value or null if no databinding + * recognizes the value + */ + DataType introspectType(Object value, Operation operation); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataPipe.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataPipe.java new file mode 100644 index 0000000000..505a810276 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataPipe.java @@ -0,0 +1,46 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + +/** + * Data pipe allows a data source pushes data into its sink and pipe the data into its result + * + * @param The data binding type of the sink + * @param The data binding type of the result + * + * @version $Rev$ $Date$ + */ +public interface DataPipe { + + /** + * Returns a sink (for example, java.io.OutputStream, java.io.Writer or org.xml.sax.ContentHandler) to receive data + * pushed by the source + * + * @return The sink to consume data + */ + S getSink(); + + /** + * Returns the data populated by the sink + * + * @return + */ + R getResult(); + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataPipeTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataPipeTransformer.java new file mode 100644 index 0000000000..1aac6d48be --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataPipeTransformer.java @@ -0,0 +1,29 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + +/** + * Data pipe allows a data source pushes data into its sink and pipe the data into its result + * + * @version $Rev$ $Date$ + */ +public interface DataPipeTransformer extends Transformer { + + DataPipe newInstance(); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultDataBindingExtensionPoint.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultDataBindingExtensionPoint.java new file mode 100644 index 0000000000..d343fb2d46 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultDataBindingExtensionPoint.java @@ -0,0 +1,243 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + +import java.io.IOException; +import java.lang.reflect.Constructor; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.logging.Level; +import java.util.logging.Logger; + +import org.apache.tuscany.sca.databinding.javabeans.JavaBeansDataBinding; +import org.apache.tuscany.sca.databinding.javabeans.JavaExceptionDataBinding; +import org.apache.tuscany.sca.extensibility.ServiceDeclaration; +import org.apache.tuscany.sca.extensibility.ServiceDiscovery; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * The default implementation of a data binding extension point. + * + * @version $Rev$ $Date$ + */ +public class DefaultDataBindingExtensionPoint implements DataBindingExtensionPoint { + private final Map bindings = new HashMap(); + private final List databindings = new ArrayList(); + private static final Logger logger = Logger.getLogger(DefaultDataBindingExtensionPoint.class.getName()); + private boolean loadedDataBindings; + + public DefaultDataBindingExtensionPoint() { + } + + public DataBinding getDataBinding(String id) { + if (id == null) { + return null; + } + DataBinding dataBinding = bindings.get(id.toLowerCase()); + if (dataBinding == null) { + loadDataBindings(); + dataBinding = bindings.get(id.toLowerCase()); + } + return dataBinding; + } + + public void addDataBinding(DataBinding dataBinding) { + if (logger.isLoggable(Level.FINE)) { + String className = dataBinding.getClass().getName(); + boolean lazy = false; + if (dataBinding instanceof LazyDataBinding) { + className = ((LazyDataBinding)dataBinding).dataBindingDeclaration.getClassName(); + lazy = true; + } + logger.fine("Adding databinding: " + className + ";name=" + dataBinding.getName() + ",lazy=" + lazy); + } + databindings.add(dataBinding); + bindings.put(dataBinding.getName().toLowerCase(), dataBinding); + + } + + public DataBinding removeDataBinding(String id) { + if (id == null) { + return null; + } + DataBinding dataBinding = bindings.remove(id.toLowerCase()); + if (dataBinding != null) { + databindings.remove(dataBinding); + } + return dataBinding; + } + + /** + * Dynamically load data bindings declared under META-INF/services + */ + private synchronized void loadDataBindings() { + if (loadedDataBindings) + return; + + // Get the databinding service declarations + Set dataBindingDeclarations; + try { + dataBindingDeclarations = ServiceDiscovery.getInstance().getServiceDeclarations(DataBinding.class.getName()); + } catch (IOException e) { + throw new IllegalStateException(e); + } + + // Load data bindings + for (ServiceDeclaration dataBindingDeclaration : dataBindingDeclarations) { + Map attributes = dataBindingDeclaration.getAttributes(); + String name = attributes.get("name"); + + // Create a data binding wrapper and register it + DataBinding dataBinding = new LazyDataBinding(name, dataBindingDeclaration); + addDataBinding(dataBinding); + } + + loadedDataBindings = true; + } + + /** + * A data binding facade allowing data bindings to be lazily loaded and + * initialized. + */ + private static class LazyDataBinding implements DataBinding { + + private String name; + private ServiceDeclaration dataBindingDeclaration; + private DataBinding dataBinding; + + private LazyDataBinding(String type, ServiceDeclaration dataBindingDeclaration) { + this.name = type; + this.dataBindingDeclaration = dataBindingDeclaration; + } + + /** + * Load and instantiate the data binding class. + * + * @return The data binding. + */ + @SuppressWarnings("unchecked") + private DataBinding getDataBinding() { + if (dataBinding == null) { + try { + Class dataBindingClass = (Class)dataBindingDeclaration.loadClass(); + Constructor constructor = dataBindingClass.getConstructor(); + dataBinding = constructor.newInstance(); + } catch (Exception e) { + throw new IllegalStateException(e); + } + } + return dataBinding; + } + + public Object copy(Object object, DataType dataType, Operation operation) { + return getDataBinding().copy(object, dataType, operation); + } + + public String getName() { + return name; + } + + public XMLTypeHelper getXMLTypeHelper() { + return getDataBinding().getXMLTypeHelper(); + } + + public WrapperHandler getWrapperHandler() { + return getDataBinding().getWrapperHandler(); + } + + public boolean introspect(DataType dataType, Operation operation) { + return getDataBinding().introspect(dataType, operation); + } + + public DataType introspect(Object value, Operation operation) { + return getDataBinding().introspect(value, operation); + } + } + + //FIXME The following methods should not be on the extension point + // they should be on a separate class + public boolean introspectType(DataType dataType, Operation operation) { + loadDataBindings(); + for (DataBinding binding : databindings) { + // don't introspect for JavaBeansDatabinding as all javatypes will + // anyways match to its basetype + // which is java.lang.Object. Default to this only if no databinding + // results + if (!binding.getName().equals(JavaBeansDataBinding.NAME)) { + if (binding.introspect(dataType, operation)) { + return true; + } + } + } + // FIXME: Should we honor the databinding from operation/interface + // level? + Class physical = dataType.getPhysical(); + if (physical == Object.class) { + dataType.setDataBinding(JavaBeansDataBinding.NAME); + return false; + } + if (dataType.getPhysical().isArray()) { + introspectArray(dataType, operation); + return true; + } else if (Throwable.class.isAssignableFrom(physical)) { + dataType.setDataBinding(JavaExceptionDataBinding.NAME); + return true; + } else { + dataType.setDataBinding(JavaBeansDataBinding.NAME); + return false; + } + } + + private boolean introspectArray(DataType dataType, Operation operation) { + Class physical = dataType.getPhysical(); + if (!physical.isArray() || physical == byte[].class) { + return false; + } + Class componentType = physical.getComponentType(); + DataType logical = new DataTypeImpl(componentType, dataType.getLogical()); + introspectType(logical, operation); + dataType.setDataBinding("java:array"); + dataType.setLogical(logical); + return true; + } + + public DataType introspectType(Object value, Operation operation) { + loadDataBindings(); + DataType dataType = null; + for (DataBinding binding : databindings) { + // don't introspect for JavaBeansDatabinding as all javatypes will + // anyways match to its basetype + // which is java.lang.Object. Default to this only if no databinding + // results + if (!binding.getName().equals(JavaBeansDataBinding.NAME)) { + dataType = binding.introspect(value, operation); + } + if (dataType != null) { + return dataType; + } + } + return new DataTypeImpl(JavaBeansDataBinding.NAME, value.getClass(), XMLType.UNKNOWN); + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultTransformerExtensionPoint.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultTransformerExtensionPoint.java new file mode 100644 index 0000000000..2583270b3d --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultTransformerExtensionPoint.java @@ -0,0 +1,306 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + +import java.io.IOException; +import java.lang.reflect.Constructor; +import java.util.ArrayList; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.logging.Level; +import java.util.logging.Logger; + +import org.apache.tuscany.sca.databinding.impl.DirectedGraph; +import org.apache.tuscany.sca.extensibility.ServiceDeclaration; +import org.apache.tuscany.sca.extensibility.ServiceDiscovery; + +/** + * @version $Rev$ $Date$ + */ +public class DefaultTransformerExtensionPoint implements TransformerExtensionPoint { + private static final Logger logger = Logger.getLogger(DefaultTransformerExtensionPoint.class.getName()); + private boolean loadedTransformers; + + private final DirectedGraph graph = new DirectedGraph(); + + public DefaultTransformerExtensionPoint() { + } + + public void addTransformer(String sourceType, String resultType, int weight, Transformer transformer, boolean publicTransformer) { + if (logger.isLoggable(Level.FINE)) { + String className = transformer.getClass().getName(); + boolean lazy = false; + boolean pull = (transformer instanceof PullTransformer); + if (transformer instanceof LazyPullTransformer) { + className = ((LazyPullTransformer)transformer).transformerDeclaration.getClassName(); + lazy = true; + } + if (transformer instanceof LazyPushTransformer) { + className = ((LazyPushTransformer)transformer).transformerDeclaration.getClassName(); + lazy = true; + } + + logger.fine("Adding transformer: " + className + + ";source=" + + sourceType + + ",target=" + + resultType + + ",weight=" + + weight + + ",type=" + + (pull ? "pull" : "push") + + ",lazy=" + + lazy); + } + graph.addEdge(sourceType, resultType, transformer, weight, publicTransformer); + } + + public void addTransformer(Transformer transformer, boolean publicTransformer) { + addTransformer(transformer.getSourceDataBinding(), + transformer.getTargetDataBinding(), + transformer.getWeight(), + transformer, publicTransformer); + } + + public boolean removeTransformer(String sourceType, String resultType) { + return graph.removeEdge(sourceType, resultType); + } + + public Transformer getTransformer(String sourceType, String resultType) { + loadTransformers(); + + DirectedGraph.Edge edge = graph.getEdge(sourceType, resultType); + return (edge == null) ? null : edge.getValue(); + } + + /** + * Dynamically load transformers registered under META-INF/services. + * + */ + private synchronized void loadTransformers() { + if (loadedTransformers) { + return; + } + loadedTransformers = true; + loadTransformers(PullTransformer.class); + loadTransformers(PushTransformer.class); + + } + + /** + * Dynamically load transformers registered under META-INF/services. + * + * @param transformerClass + */ + private synchronized void loadTransformers(Class transformerClass) { + + // Get the transformer service declarations + Set transformerDeclarations; + + try { + transformerDeclarations = ServiceDiscovery.getInstance().getServiceDeclarations(transformerClass.getName()); + + } catch (IOException e) { + throw new IllegalStateException(e); + } + + // Load transformers + for (ServiceDeclaration transformerDeclaration : transformerDeclarations) { + Map attributes = transformerDeclaration.getAttributes(); + + String source = attributes.get("source"); + String target = attributes.get("target"); + int weight = Integer.valueOf(attributes.get("weight")); + String b = attributes.get("public"); + boolean pub = true; + if (b != null) { + pub = Boolean.valueOf(b); + } + + // Create a transformer wrapper and register it + Transformer transformer; + if (transformerClass == PullTransformer.class) { + transformer = new LazyPullTransformer(source, target, weight, transformerDeclaration); + } else { + transformer = new LazyPushTransformer(source, target, weight, transformerDeclaration); + } + addTransformer(transformer, pub); + } + } + + /** + * A transformer facade allowing transformers to be lazily loaded + * and initialized. + */ + private static class LazyPullTransformer implements PullTransformer { + + private String source; + private String target; + private int weight; + private ServiceDeclaration transformerDeclaration; + private PullTransformer transformer; + + public LazyPullTransformer(String source, String target, int weight, ServiceDeclaration transformerDeclaration) { + this.source = source; + this.target = target; + this.weight = weight; + this.transformerDeclaration = transformerDeclaration; + } + + /** + * Load and instantiate the transformer class. + * + * @return The transformer. + */ + @SuppressWarnings("unchecked") + private PullTransformer getTransformer() { + if (transformer == null) { + try { + Class> transformerClass = + (Class>)transformerDeclaration.loadClass(); + Constructor> constructor = transformerClass.getConstructor(); + transformer = constructor.newInstance(); + } catch (Exception e) { + throw new IllegalStateException(e); + } + } + return transformer; + } + + public String getSourceDataBinding() { + return source; + } + + public String getTargetDataBinding() { + return target; + } + + public int getWeight() { + return weight; + } + + public Object transform(Object source, TransformationContext context) { + return getTransformer().transform(source, context); + } + + @Override + public String toString() { + StringBuffer sb = new StringBuffer(super.toString()); + sb.append(";className=").append(transformerDeclaration.getClassName()); + return sb.toString(); + } + } + + /** + * A transformer facade allowing transformers to be lazily loaded + * and initialized. + */ + private static class LazyPushTransformer implements PushTransformer { + + private String source; + private String target; + private int weight; + private ServiceDeclaration transformerDeclaration; + private PushTransformer transformer; + + public LazyPushTransformer(String source, String target, int weight, ServiceDeclaration transformerDeclaration) { + this.source = source; + this.target = target; + this.weight = weight; + this.transformerDeclaration = transformerDeclaration; + } + + /** + * Load and instantiate the transformer class. + * + * @return The transformer. + */ + @SuppressWarnings("unchecked") + private PushTransformer getTransformer() { + if (transformer == null) { + try { + Class> transformerClass = + (Class>)transformerDeclaration.loadClass(); + Constructor> constructor = transformerClass.getConstructor(); + transformer = constructor.newInstance(); + } catch (Exception e) { + throw new IllegalStateException(e); + } + } + return transformer; + } + + public String getSourceDataBinding() { + return source; + } + + public String getTargetDataBinding() { + return target; + } + + public int getWeight() { + return weight; + } + + public void transform(Object source, Object sink, TransformationContext context) { + getTransformer().transform(source, sink, context); + } + + @Override + public String toString() { + StringBuffer sb = new StringBuffer(super.toString()); + sb.append(";className=").append(transformerDeclaration.getClassName()); + return sb.toString(); + } + } + + //FIXME The following methods should be on a different class from + // extension point + + public List getTransformerChain(String sourceType, String resultType) { + loadTransformers(); + + String source = sourceType; + String result = resultType; + List transformers = new ArrayList(); + // First check if there is a direct path, if yes, use it regardless of the weight + DirectedGraph.Edge link = graph.getEdge(sourceType, resultType); + if (link != null) { + transformers.add(link.getValue()); + } else { + DirectedGraph.Path path = graph.getShortestPath(source, result); + if (path == null) { + return null; + } + for (DirectedGraph.Edge edge : path.getEdges()) { + transformers.add(edge.getValue()); + } + } + return transformers; + } + + @Override + public String toString() { + loadTransformers(); + + return graph.toString(); + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/Mediator.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/Mediator.java new file mode 100644 index 0000000000..6b8acfc7b4 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/Mediator.java @@ -0,0 +1,68 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + +import java.util.Map; + +import org.apache.tuscany.sca.interfacedef.DataType; + +/** + * This interface will be used as a Tuscany system service to perform data mediations + * + * Mediate the data from one type to the other one + * + * @version $Rev$ $Date$ + */ +public interface Mediator { + + /** + * Mediate the data from the source type to the target type + * @param source The data to be mediated + * @param sourceDataType Data type for the source data + * @param targetDataType Data type for the target data + * @param context + * @return + */ + Object mediate(Object source, DataType sourceDataType, DataType targetDataType, Map context); + /** + * Mediate the source data into the target which is a sink to receive the data + * @param source The data to be mediated + * @param target The sink to receive data + * @param sourceDataType Data type for the source data + * @param targetDataType Data type for the target data + */ + void mediate( + Object source, + Object target, + DataType sourceDataType, + DataType targetDataType, + Map context); + + /** + * Get the DataBindings used by this mediator. + * @return + */ + DataBindingExtensionPoint getDataBindings(); + + /** + * Get the Transformers used by this mediator. + * @return + */ + TransformerExtensionPoint getTransformers(); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/PullTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/PullTransformer.java new file mode 100644 index 0000000000..81264923eb --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/PullTransformer.java @@ -0,0 +1,38 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + +/** + * PullTransformer transforms data from one binding format to the other one which can be directly consumed + * + * @param The source data type + * @param the target data type + * + * @version $Rev$ $Date$ + */ +public interface PullTransformer extends Transformer { + /** + * Transform source data into the result type. + * + * @param source The source data + * @param context The context for the transformation + * @return The transformed result + */ + R transform(S source, TransformationContext context); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/PushTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/PushTransformer.java new file mode 100644 index 0000000000..600a6477f6 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/PushTransformer.java @@ -0,0 +1,36 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + +/** + * A transformer that pushes data from its source into the sink + * + * @param + * @param + * + * @version $Rev$ $Date$ + */ +public interface PushTransformer extends Transformer { + /** + * @param source The source data + * @param sink The sink to receive the data + * @param context + */ + void transform(S source, R sink, TransformationContext context); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/SimpleTypeMapper.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/SimpleTypeMapper.java new file mode 100644 index 0000000000..4e6d130aa9 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/SimpleTypeMapper.java @@ -0,0 +1,46 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding; + +import javax.xml.namespace.QName; + +/** + * Type Mapper between XML schema simple data types and java objects + * + * @version $Rev$ $Date$ + */ +public interface SimpleTypeMapper { + /** + * Parse the XML lexical representation into a java object + * @param simpleType The XSD simple type + * @param value the XML lexical representation + * @param context The context of the transformation + * @return A java object for the XML value + */ + Object toJavaObject(QName simpleType, String value, TransformationContext context); + /** + * Create the XML lexical representation for a java object + * @param simpleType The XSD simple type + * @param obj The java object + * @param context The context of the transformation + * @return The XML lexical representation + */ + String toXMLLiteral(QName simpleType, Object obj, TransformationContext context); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/TransformationContext.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/TransformationContext.java new file mode 100644 index 0000000000..9ffadd1eae --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/TransformationContext.java @@ -0,0 +1,95 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + +import java.util.Map; + +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; + +/** + * Context for data transformation + * + * @version $Rev$ $Date$ + */ +public interface TransformationContext { + + /** + * @return + */ + Operation getSourceOperation(); + + /** + * @param sourceOperation + */ + void setSourceOperation(Operation sourceOperation); + + /** + * @return + */ + Operation getTargetOperation(); + + /** + * @param targetOperation + */ + void setTargetOperation(Operation targetOperation); + + /** + * Get the source data type + * + * @return + */ + DataType getSourceDataType(); + + /** + * Get the target data type + * + * @return + */ + DataType getTargetDataType(); + + /** + * Set the source data type + * + * @param sourceDataType + */ + void setSourceDataType(DataType sourceDataType); + + /** + * Set the target data type + * + * @param targetDataType + */ + void setTargetDataType(DataType targetDataType); + + /** + * Get the ClassLoader + * + * @return Returns the ClassLoader + */ + ClassLoader getClassLoader(); + + /** + * Get a map of metadata + * + * @return Returns a map of the metadata + */ + Map getMetadata(); + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/TransformationException.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/TransformationException.java new file mode 100644 index 0000000000..4f949f7dff --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/TransformationException.java @@ -0,0 +1,65 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + + +/** + * Reports problems during data transformation + * + * @version $Rev$ $Date$ + */ +public class TransformationException extends RuntimeException { + + private static final long serialVersionUID = 7662385613693006428L; + private String sourceDataBinding; + private String targetDataBinding; + + public TransformationException() { + super(); + } + + public TransformationException(String message, Throwable cause) { + super(message, cause); + } + + public TransformationException(String message) { + super(message); + } + + public TransformationException(Throwable cause) { + super(cause); + } + + public String getSourceDataBinding() { + return sourceDataBinding; + } + + public void setSourceDataBinding(String sourceDataBinding) { + this.sourceDataBinding = sourceDataBinding; + } + + public String getTargetDataBinding() { + return targetDataBinding; + } + + public void setTargetDataBinding(String targetDataBinding) { + this.targetDataBinding = targetDataBinding; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/Transformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/Transformer.java new file mode 100644 index 0000000000..2aa0ad7c15 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/Transformer.java @@ -0,0 +1,51 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + +/** + * A transformer provides the data transformation from source type to target type. The cost of the transformation is + * modelled as weight. + * + * @version $Rev$ $Date$ + */ +public interface Transformer { + /** + * Get the source type that this transformer transforms data from. The type is used as the key when the transformer + * is registered with TransformerRegistry. + * + * @return A key identifying the source type + */ + String getSourceDataBinding(); + + /** + * Get the target type that this transformer transforms data into. The type is used as the key when the transformer + * is registered with TransformerRegistry. + * + * @return A key identifying the target type + */ + String getTargetDataBinding(); + + /** + * Get the cost of the transformation. The weight can be used to choose the most efficient path if there are more + * than one available from the source to the target. + * + * @return An integer representing the cost of the transformation + */ + int getWeight(); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/TransformerExtensionPoint.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/TransformerExtensionPoint.java new file mode 100644 index 0000000000..ee7efe4860 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/TransformerExtensionPoint.java @@ -0,0 +1,81 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding; + +import java.util.List; + +/** + * An extension point for data transformer extensions. + * + * @version $Rev$ $Date$ + */ +public interface TransformerExtensionPoint { + + /** + * Register a transformer + * + * @param sourceDataBinding + * @param targetDataBinding + * @param weight + * @param transformer + * @param publicTransformer TODO + */ + void addTransformer(String sourceDataBinding, + String targetDataBinding, + int weight, + Transformer transformer, + boolean publicTransformer); + + /** + * Register a transformer + * + * @param transformer + * @param publicTransformer TODO + */ + void addTransformer(Transformer transformer, boolean publicTransformer); + + /** + * Unregister a transformer + * + * @param sourceDataBinding + * @param targetDataBinding + * @return + */ + boolean removeTransformer(String sourceDataBinding, String targetDataBinding); + + /** + * Get the direct Transformer which can transform data from source type to + * result type + * + * @param sourceDataBinding + * @param targetDataBinding + * @return + */ + Transformer getTransformer(String sourceDataBinding, String targetDataBinding); + + /** + * Get the a chain of Transformers which can transform data from source type + * to result type + * + * @param sourceDataBinding + * @param targetDataBinding + * @return + */ + List getTransformerChain(String sourceDataBinding, String targetDataBinding); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/WrapperHandler.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/WrapperHandler.java new file mode 100644 index 0000000000..ee4e35555c --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/WrapperHandler.java @@ -0,0 +1,78 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding; + +import java.util.List; + +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; + +/** + * A contract for transformers to deal with wrapping/unwrapping for WSDL wrapper style operations + * + * @version $Rev$ $Date$ + */ +public interface WrapperHandler { + /** + * Create a wrapper element + * @param operation The operation + * @param input Is it for input or output + * @return An object representing the wrapper element + */ + T create(Operation operation, boolean input); + + /** + * Get the data type for the wrapper + * @param operation The operation + * @param input Is it for input or output? + * @return The data type of the wrapper, null if it's not a wrapper type + */ + DataType getWrapperType(Operation operation, boolean input); + + /** + * Check if the given data is an instance of the wrapper + * @param wrapper + * @param operation The operation + * @param input Input or output + * @return + */ + boolean isInstance(Object wrapper, Operation operation, boolean input); + + /** + * Populate the wrapper element with the child objects + * @param wrapper The wrapper object + * @param childObjects The child objects + * @param operation The operation + * @param input Is it for input or output + */ + void setChildren(T wrapper, + Object[] childObjects, + Operation operation, + boolean input); + + /** + * Get a list of child elements from the wrapper + * @param wrapper The wrapper object + * @param operation The operation + * @param input Is it for input or output + * @return child elements under the wrapper + */ + List getChildren(T wrapper, Operation operation, boolean input); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/XMLTypeHelper.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/XMLTypeHelper.java new file mode 100644 index 0000000000..e940f8675f --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/XMLTypeHelper.java @@ -0,0 +1,68 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding; + +import java.util.List; + +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Interface; +import org.apache.tuscany.sca.interfacedef.util.TypeInfo; +import org.apache.tuscany.sca.xsd.XSDFactory; +import org.apache.tuscany.sca.xsd.XSDefinition; + +/** + * XML and schema helper for Java types + */ +public interface XMLTypeHelper { + + // FIXME: This method seems to require the XMLHelper instance to be stateful + /** + * Convert a Java type into XML type information + * @param javaType the physical Java class + * @param logical the logical type information + * @return the XML type information + */ + TypeInfo getTypeInfo(Class javaType, Object logical); + + /** + * Get schema definitions for the Java types known to this helper + * @return A list of schema definitions + */ + // List getSchemaDefinitions(XSDFactory factory, ModelResolver resolver); + + /** + * Get a list of XML schemas for the given data types + * @param factory + * @param resolver + * @param dataTypes + * @return + */ + List getSchemaDefinitions(XSDFactory factory, ModelResolver resolver, List dataTypes); + /** + * Get a list of XML schemas for the given interface + * @param factory + * @param resolver + * @param intf + * @return + */ + List getSchemaDefinitions(XSDFactory factory, ModelResolver resolver, Interface intf); + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/annotation/DataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/annotation/DataBinding.java new file mode 100644 index 0000000000..4405077e29 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/annotation/DataBinding.java @@ -0,0 +1,56 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.annotation; + +import static java.lang.annotation.ElementType.METHOD; +import static java.lang.annotation.ElementType.TYPE; +import static java.lang.annotation.RetentionPolicy.RUNTIME; + +import java.lang.annotation.Retention; +import java.lang.annotation.Target; + +/** + * Used to demarcate the mapping style for an interface or operation + * + * @version $Rev$ $Date$ + */ +// FIXME: [rfeng] We should consider to use javax.jws.soap.SOAPBinding +@Target({TYPE, METHOD}) +@Retention(RUNTIME) +public @interface DataBinding { + + /** + * Indicate the effective databinding that controls the WSDL/Java mapping of the + * interface/operation + * + * @return the data binding with the MIME media type syntax + */ + String value(); + + /** + * Indicate if the operation is mapped using WRAPPED or BARE style. Originated from + * javax.jws.soap.SOAPBinding.ParameterStyle: Determines whether method parameters + * represent the entire message body, or whether the parameters are elements wrapped + * inside a top-level element named after the operation + * + * @return true if the parameter style is WRAPPED, false if BARE + */ + boolean wrapped() default false; + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/annotation/DataType.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/annotation/DataType.java new file mode 100644 index 0000000000..650e909c61 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/annotation/DataType.java @@ -0,0 +1,43 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.annotation; + +import static java.lang.annotation.ElementType.METHOD; +import static java.lang.annotation.ElementType.PARAMETER; +import static java.lang.annotation.RetentionPolicy.RUNTIME; + +import java.lang.annotation.Retention; +import java.lang.annotation.Target; + +/** + * Used to demarcate expected data types for parameters and return type + * + * @version $Rev$ $Date$ + */ +@Target( {METHOD, PARAMETER}) +@Retention(RUNTIME) +public @interface DataType { + + /** + * Returns the data binding configuration in MIME media type syntax + * @return the data binding + */ + String value(); + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/externalizable/ExternalizableDataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/externalizable/ExternalizableDataBinding.java new file mode 100644 index 0000000000..6f3456fdf0 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/externalizable/ExternalizableDataBinding.java @@ -0,0 +1,39 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.externalizable; + +import org.apache.tuscany.sca.databinding.impl.BaseDataBinding; + +/** + * DataNinding for Externalizable objects. + * + * @version $Rev$ $Date$ + */ +public class ExternalizableDataBinding extends BaseDataBinding { + + public static final String NAME = java.io.Externalizable.class.getName(); + + public ExternalizableDataBinding() { + super(NAME, java.io.Externalizable.class); + } + + + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/BaseDataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/BaseDataBinding.java new file mode 100644 index 0000000000..cb9f2969e2 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/BaseDataBinding.java @@ -0,0 +1,110 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.impl; + + +import org.apache.tuscany.sca.databinding.DataBinding; +import org.apache.tuscany.sca.databinding.WrapperHandler; +import org.apache.tuscany.sca.databinding.XMLTypeHelper; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * Base Implementation of DataBinding + * + * @version $Rev$ $Date$ + */ +public abstract class BaseDataBinding implements DataBinding { + + private Class baseType; + + private String name; + + /** + * Create a databinding with the base java type whose name will be used as + * the name of the databinding + * + * @param baseType The base java class or interface representing the + * databinding, for example, org.w3c.dom.Node + */ + protected BaseDataBinding(Class baseType) { + this(baseType.getName(), baseType); + } + + /** + * Create a databinding with the name and base java type + * + * @param name The name of the databinding + * @param baseType The base java class or interface representing the + * databinding, for example, org.w3c.dom.Node + */ + protected BaseDataBinding(String name, Class baseType) { + this.name = name; + this.baseType = baseType; + } + + @SuppressWarnings("unchecked") + public boolean introspect(DataType type, Operation operation) { + assert type != null; + Class cls = type.getPhysical(); + if (baseType != null && baseType.isAssignableFrom(cls)) { + type.setDataBinding(getName()); + if (type.getLogical() == null) { + type.setLogical(XMLType.UNKNOWN); + } + return true; + } + return false; + } + + public DataType introspect(Object value, Operation operation) { + if (value == null) { + return null; + } else { + DataType dataType = new DataTypeImpl(value.getClass(), value.getClass()); + if (introspect(dataType, (Operation) null)) { + return dataType; + } else { + return null; + } + } + } + + public final String getName() { + return name; + } + + /** + * @see org.apache.tuscany.sca.databinding.DataBinding#getWrapperHandler() + */ + public WrapperHandler getWrapperHandler() { + return null; + } + + public Object copy(Object object, DataType dataType, Operation operation) { + return object; + } + + public XMLTypeHelper getXMLTypeHelper() { + return null; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/BaseTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/BaseTransformer.java new file mode 100644 index 0000000000..94a2cdb0bb --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/BaseTransformer.java @@ -0,0 +1,52 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.impl; + +import org.apache.tuscany.sca.databinding.Transformer; + +/** + * Base Implementation of Transformer which provides the registration to the + * transformer registry + * + * @version $Rev$ $Date$ + */ +public abstract class BaseTransformer implements Transformer { + + protected BaseTransformer() { + super(); + } + + protected abstract Class getSourceType(); + + protected abstract Class getTargetType(); + + public String getSourceDataBinding() { + return getSourceType().getName(); + } + + public String getTargetDataBinding() { + return getTargetType().getName(); + } + + public int getWeight() { + // default to 50 + return 50; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/DOMHelper.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/DOMHelper.java new file mode 100644 index 0000000000..64b3d22c10 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/DOMHelper.java @@ -0,0 +1,163 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.impl; + +import javax.xml.namespace.QName; +import javax.xml.parsers.DocumentBuilder; +import javax.xml.parsers.DocumentBuilderFactory; +import javax.xml.parsers.ParserConfigurationException; + +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.util.XMLType; +import org.w3c.dom.Attr; +import org.w3c.dom.Document; +import org.w3c.dom.Element; +import org.w3c.dom.NamedNodeMap; +import org.w3c.dom.Node; + +/** + * Helper for DOM + * + * @version $Rev$ $Date$ + */ +public final class DOMHelper { + private static DocumentBuilderFactory FACTORY; + + private DOMHelper() { + } + + public static Document newDocument() throws ParserConfigurationException { + return newDocumentBuilder().newDocument(); + } + + public static DocumentBuilder newDocumentBuilder() throws ParserConfigurationException { + init(); + return FACTORY.newDocumentBuilder(); + } + + /** + * + */ + private static synchronized void init() { + if (FACTORY == null) { + FACTORY = DocumentBuilderFactory.newInstance(); + FACTORY.setNamespaceAware(true); + } + } + + public static QName getQName(Node node) { + String ns = node.getNamespaceURI(); + if (ns == null) { + ns = ""; + } + // node.getLocalName() will return null if it is created using DOM Level + // 1 method + // such as createElement() + return new QName(ns, node.getNodeName()); + } + + public static Element createElement(Document document, QName name) { + String prefix = name.getPrefix(); + String qname = + (prefix != null && prefix.length() > 0) ? prefix + ":" + name.getLocalPart() : name.getLocalPart(); + return document.createElementNS(name.getNamespaceURI(), qname); + } + + /** + * Wrap an element as a DOM document + * @param node + * @return + */ + public static Document promote(Node node) { + if (node instanceof Document) { + return (Document)node; + } + Element element = (Element)node; + Document doc = element.getOwnerDocument(); + if (doc.getDocumentElement() == element) { + return doc; + } + doc = (Document)element.getOwnerDocument().cloneNode(false); + Element schema = (Element)doc.importNode(element, true); + doc.appendChild(schema); + Node parent = element.getParentNode(); + while (parent instanceof Element) { + Element root = (Element)parent; + NamedNodeMap nodeMap = root.getAttributes(); + for (int i = 0; i < nodeMap.getLength(); i++) { + Attr attr = (Attr)nodeMap.item(i); + String name = attr.getName(); + if ("xmlns".equals(name) || name.startsWith("xmlns:")) { + if (schema.getAttributeNode(name) == null) { + schema.setAttributeNodeNS((Attr)doc.importNode(attr, true)); + } + } + } + parent = parent.getParentNode(); + } + return doc; + } + + /** + * @param context + * @param element + */ + public static Element adjustElementName(TransformationContext context, Element element) { + if (context != null) { + DataType dataType = context.getTargetDataType(); + Object logical = dataType == null ? null : dataType.getLogical(); + if (!(logical instanceof XMLType)) { + return element; + } + XMLType xmlType = (XMLType)logical; + QName name = new QName(element.getNamespaceURI(), element.getLocalName()); + if (xmlType.isElement() && !xmlType.getElementName().equals(name)) { + QName newName = xmlType.getElementName(); + String prefix = newName.getPrefix(); + String qname = newName.getLocalPart(); + if (prefix != null && !prefix.equals("")) { + qname = prefix + ":" + qname; + } + Document doc = element.getOwnerDocument(); + Element newElement = doc.createElementNS(newName.getNamespaceURI(), qname); + // Copy the attributes to the new element + NamedNodeMap attrs = element.getAttributes(); + for (int i = 0; i < attrs.getLength(); i++) { + Attr attr = (Attr)doc.importNode(attrs.item(i), true); + newElement.getAttributes().setNamedItem(attr); + } + + // Move all the children + while (element.hasChildNodes()) { + newElement.appendChild(element.getFirstChild()); + } + + // Replace the old node with the new node + if (element.getParentNode() != null) { + element.getParentNode().replaceChild(newElement, element); + } + + return newElement; + } + } + return element; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/DirectedGraph.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/DirectedGraph.java new file mode 100644 index 0000000000..01916dfb96 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/DirectedGraph.java @@ -0,0 +1,452 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.impl; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.LinkedList; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.ConcurrentHashMap; + +/** + * Directed, weighted graph + * + * @param The type of vertex object + * @param The type of edge object + * + * @version $Rev$ $Date$ + */ +public class DirectedGraph implements Cloneable { + private final Map vertices = new HashMap(); + + /** + * Key for the shortest path cache + */ + private final class VertexPair { + private Vertex source; + + private Vertex target; + + /** + * @param source + * @param target + */ + private VertexPair(Vertex source, Vertex target) { + super(); + this.source = source; + this.target = target; + } + + @Override + public boolean equals(Object object) { + if (!VertexPair.class.isInstance(object)) { + return false; + } + VertexPair pair = (VertexPair)object; + return source == pair.source && target == pair.target; + } + + @Override + public int hashCode() { + int x = source == null ? 0 : source.hashCode(); + int y = target == null ? 0 : target.hashCode(); + return x ^ y; + } + + } + + // Fix for TUSCANY-2069, making the map concurrent + private final Map paths = new ConcurrentHashMap(); + private final Path NULL_PATH = new Path(); + + /** + * Vertex of a graph + */ + public final class Vertex { + private V value; + + // TODO: Do we want to support multiple edges for a vertex pair? If so, + // we should use a List instead of Map + private Map outEdges = new HashMap(); + private Map inEdges = new HashMap(); + + private Vertex(V value) { + this.value = value; + } + + @Override + public String toString() { + return "(" + value + ")"; + } + + public V getValue() { + return value; + } + + public Map getOutEdges() { + return outEdges; + } + + public Map getInEdges() { + return inEdges; + } + + } + + /** + * An Edge connects two vertices in one direction + */ + public final class Edge { + private Vertex sourceVertex; + + private Vertex targetVertex; + + private E value; + + private int weight; + + private boolean pub = true; + + public Edge(Vertex source, Vertex target, E value, int weight, boolean pub) { + this.sourceVertex = source; + this.targetVertex = target; + this.value = value; + this.weight = weight; + this.pub = pub; + } + + @Override + public String toString() { + return sourceVertex + "->" + targetVertex + "[" + value + "," + weight + "]"; + } + + public E getValue() { + return value; + } + + public void setValue(E value) { + this.value = value; + } + + public Vertex getTargetVertex() { + return targetVertex; + } + + public void setTargetVertex(Vertex vertex) { + this.targetVertex = vertex; + } + + public int getWeight() { + return weight; + } + + public void setWeight(int weight) { + this.weight = weight; + } + + public Vertex getSourceVertex() { + return sourceVertex; + } + + public void setSourceVertex(Vertex sourceVertex) { + this.sourceVertex = sourceVertex; + } + + public boolean isPublic() { + return pub; + } + + public void setPublic(boolean pub) { + this.pub = pub; + } + } + + private final class Node implements Comparable { + + private long distance = Integer.MAX_VALUE; + + private Node previous; // NOPMD by rfeng on 9/26/06 9:17 PM + + private Vertex vertex; // NOPMD by rfeng on 9/26/06 9:17 PM + + private Node(Vertex vertex) { + this.vertex = vertex; + } + + public int compareTo(Node o) { + return (distance > o.distance) ? 1 : ((distance == o.distance) ? 0 : -1); + } + } + + public void addEdge(V source, V target, E edgeValue, int weight, boolean publicEdge) { + Vertex s = getVertex(source); + if (s == null) { + s = new Vertex(source); + vertices.put(source, s); + } + Vertex t = getVertex(target); + if (t == null) { + t = new Vertex(target); + vertices.put(target, t); + } + Edge edge = new Edge(s, t, edgeValue, weight, publicEdge); + s.outEdges.put(t, edge); + t.inEdges.put(s, edge); + } + + public void addEdge(V soure, V target) { + addEdge(soure, target, null, 0, true); + } + + public Vertex getVertex(V source) { + Vertex s = vertices.get(source); + return s; + } + + public boolean removeEdge(V source, V target) { + Vertex s = getVertex(source); + if (s == null) { + return false; + } + + Vertex t = getVertex(target); + if (t == null) { + return false; + } + + return s.outEdges.remove(t) != null && t.inEdges.remove(s) != null; + + } + + public void removeEdge(Edge edge) { + edge.sourceVertex.outEdges.remove(edge.targetVertex); + edge.targetVertex.inEdges.remove(edge.sourceVertex); + } + + public void removeVertex(Vertex vertex) { + vertices.remove(vertex.getValue()); + for (Edge e : new ArrayList(vertex.outEdges.values())) { + removeEdge(e); + } + for (Edge e : new ArrayList(vertex.inEdges.values())) { + removeEdge(e); + } + } + + public Edge getEdge(Vertex source, Vertex target) { + return source.outEdges.get(target); + } + + public Edge getEdge(V source, V target) { + Vertex sv = getVertex(source); + if (sv == null) { + return null; + } + Vertex tv = getVertex(target); + if (tv == null) { + return null; + } + return getEdge(getVertex(source), getVertex(target)); + } + + /** + * Get the shortest path from the source vertex to the target vertex using + * Dijkstra's algorithm. If there's no path, null will be returned. If the + * source is the same as the target, it returns a path with empty edges with + * weight 0. + * + * @param sourceValue The value identifies the source + * @param targetValue The value identifies the target + * @return The shortest path + */ + public Path getShortestPath(V sourceValue, V targetValue) { + Vertex source = getVertex(sourceValue); + if (source == null) { + return null; + } + Vertex target = getVertex(targetValue); + if (target == null) { + return null; + } + + VertexPair pair = new VertexPair(source, target); + Path path = null; + if (paths.containsKey(pair)) { + path = paths.get(pair); + return path == NULL_PATH? null: path; + } + + // Check if there is a direct link, if yes, use it instead + Edge direct = getEdge(source, target); + path = new Path(); + if (direct != null) { + path.addEdge(direct); + paths.put(pair, path); + return path; + } + + Map nodes = new HashMap(); + for (Vertex v : vertices.values()) { + Node node = new Node(v); + if (v == source) { + node.distance = 0; + } + nodes.put(v, node); + } + + Set otherNodes = new HashSet(nodes.values()); + Set nodesOnPath = new HashSet(); + Node nextNode = null; + while (!otherNodes.isEmpty()) { + nextNode = extractMin(otherNodes); + if (nextNode.vertex == target) { + path = getPath(nextNode); + paths.put(pair, path); // Cache it + return path == NULL_PATH? null: path; + } + nodesOnPath.add(nextNode); + for (Edge edge : nextNode.vertex.outEdges.values()) { + Node adjacentNode = nodes.get(edge.targetVertex); + // The private edge can only be used if the edge connects to the target directly + if (edge.isPublic() || edge.getTargetVertex() == target) { + if (nextNode.distance + edge.weight < adjacentNode.distance) { + adjacentNode.distance = nextNode.distance + edge.weight; + adjacentNode.previous = nextNode; + } + } + } + } + paths.put(pair, NULL_PATH); // Cache it + return null; + } + + /** + * Searches for the vertex u in the vertex set Q that has the least d[u] + * value. That vertex is removed from the set Q and returned to the user. + * + * @param nodes + * @return + */ + private Node extractMin(Set nodes) { + Node node = Collections.min(nodes); + nodes.remove(node); + return node; + } + + /** + * The path between two vertices + */ + public final class Path { + private List edges = new LinkedList(); + + private int weight; + + public int getWeight() { + return weight; + } + + public List getEdges() { + return edges; + } + + public void addEdge(Edge edge) { + edges.add(0, edge); + weight += edge.weight; + } + + @Override + public String toString() { + return edges + ", " + weight; + } + } + + private Path getPath(Node t) { + if (t.distance == Integer.MAX_VALUE) { + return NULL_PATH; + } + Path path = new Path(); + Node u = t; + while (u.previous != null) { + Edge edge = getEdge(u.previous.vertex, u.vertex); + path.addEdge(edge); + u = u.previous; + } + return path; + } + + @Override + public String toString() { + StringBuffer sb = new StringBuffer(); + for (Vertex v : vertices.values()) { + sb.append(v.outEdges.values()).append("\n"); + } + return sb.toString(); + } + + public Map getVertices() { + return vertices; + } + + public void addGraph(DirectedGraph otherGraph) { + for (Vertex v : otherGraph.vertices.values()) { + for (Edge e : v.outEdges.values()) { + addEdge(e.sourceVertex.value, e.targetVertex.value, e.value, e.weight, true); + } + } + } + + private Vertex getFirst() { + for (Vertex v : vertices.values()) { + if (v.inEdges.isEmpty()) { + return v; + } + } + if (!vertices.isEmpty()) { + throw new IllegalArgumentException("Circular ordering has been detected: " + toString()); + } else { + return null; + } + } + + public List topologicalSort(boolean readOnly) { + DirectedGraph graph = (!readOnly) ? this : (DirectedGraph)clone(); + List list = new ArrayList(); + while (true) { + Vertex v = graph.getFirst(); + if (v == null) { + break; + } + list.add(v.getValue()); + graph.removeVertex(v); + } + + return list; + } + + @Override + public Object clone() { + DirectedGraph copy = new DirectedGraph(); + copy.addGraph(this); + return copy; + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/Group2GroupTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/Group2GroupTransformer.java new file mode 100644 index 0000000000..cc7b40d06b --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/Group2GroupTransformer.java @@ -0,0 +1,94 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.impl; + +import org.apache.tuscany.sca.databinding.Mediator; +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.interfacedef.DataType; + +/** + * This is a special transformer to transform the output from one IDL to the + * other one + * + * @version $Rev$ $Date$ + */ +public class Group2GroupTransformer extends BaseTransformer implements + PullTransformer { + + protected Mediator mediator; + + /** + * @param wrapperHandler + */ + public Group2GroupTransformer() { + super(); + } + + /** + * @param mediator the mediator to set + */ + public void setMediator(Mediator mediator) { + this.mediator = mediator; + } + + @Override + public String getSourceDataBinding() { + return GroupDataBinding.NAME; + } + + @Override + public String getTargetDataBinding() { + return GroupDataBinding.NAME; + } + + /** + * @see org.apache.tuscany.sca.databinding.impl.BaseTransformer#getSourceType() + */ + @Override + protected Class getSourceType() { + return Object.class; + } + + /** + * @see org.apache.tuscany.sca.databinding.impl.BaseTransformer#getTargetType() + */ + @Override + protected Class getTargetType() { + return Object.class; + } + + /** + * @see org.apache.tuscany.sca.databinding.Transformer#getWeight() + */ + @Override + public int getWeight() { + return 10; + } + + @SuppressWarnings("unchecked") + public Object transform(Object source, TransformationContext context) { + DataType sourceType = context.getSourceDataType(); + DataType targetType = context.getTargetDataType(); + + return mediator.mediate(source, sourceType.getLogical(), targetType.getLogical(), context.getMetadata()); + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/GroupDataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/GroupDataBinding.java new file mode 100644 index 0000000000..70efd6a5c5 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/GroupDataBinding.java @@ -0,0 +1,103 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.impl; + +import java.lang.reflect.ParameterizedType; +import java.lang.reflect.Type; + +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * The base class for a special databinding which represents a group of other databindings + * + * @version $Rev$ $Date$ + */ +public abstract class GroupDataBinding extends BaseDataBinding { + public static final String NAME = "databinding:group"; + + /** + * Marker type is a java class or interface representing the data format. + */ + protected Class[] markerTypes; + + public GroupDataBinding(Class[] types) { + super(NAME, GroupDataBinding.class); + this.markerTypes = types; + } + + @SuppressWarnings("unchecked") + @Override + public boolean introspect(DataType type, Operation operation) { + if (markerTypes == null) { + return false; + } + Type physical = type.getPhysical(); + if (physical instanceof ParameterizedType) { + physical = ((ParameterizedType)physical).getRawType(); + } + if (!(physical instanceof Class)) { + return false; + } + Class cls = (Class)physical; + for (Class c : markerTypes) { + if (isTypeOf(c, cls)) { + type.setDataBinding(getDataBinding(c)); + Object logical = getLogical(cls, null); + if (logical != null) { + type.setLogical(getLogical(cls, null)); + } else { + type.setLogical(XMLType.UNKNOWN); + } + return true; + } + } + return false; + } + + /** + * Test if the given type is a subtype of the base type + * @param markerType + * @param type + * @return + */ + protected boolean isTypeOf(Class markerType, Class type) { + return markerType.isAssignableFrom(type); + } + + /** + * Derive the databinding name from a base class + * @param baseType + * @return + */ + protected String getDataBinding(Class baseType) { + return baseType.getName(); + } + + /** + * Get the logical type + * @param type The java type + * @param operation TODO + * @return + */ + protected abstract Object getLogical(Class type, Operation operation); + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/Java2SimpleTypeTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/Java2SimpleTypeTransformer.java new file mode 100644 index 0000000000..45896ca6a1 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/Java2SimpleTypeTransformer.java @@ -0,0 +1,70 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.impl; + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.SimpleTypeMapper; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.javabeans.SimpleJavaDataBinding; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * Transformer to convert data from a simple java object to a databinding's representation + * + * @version $Rev$ $Date$ + */ +public abstract class Java2SimpleTypeTransformer extends BaseTransformer implements + PullTransformer { + + protected SimpleTypeMapper mapper; + + public Java2SimpleTypeTransformer() { + this.mapper = new SimpleTypeMapperImpl(); + } + + public Java2SimpleTypeTransformer(SimpleTypeMapper mapper) { + this.mapper = (mapper != null) ? mapper : new SimpleTypeMapperImpl(); + } + + public T transform(Object source, TransformationContext context) { + XMLType xmlType = (XMLType) context.getTargetDataType().getLogical(); + String text = mapper.toXMLLiteral(xmlType.getTypeName(), source, context); + return createElement(xmlType.getElementName(), text, context); + } + + @Override + public Class getSourceType() { + return Object.class; + } + + @Override + public int getWeight() { + return 10000; + } + + protected abstract T createElement(QName element, String literal, TransformationContext context); + + @Override + public String getSourceDataBinding() { + return SimpleJavaDataBinding.NAME; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/MediatorImpl.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/MediatorImpl.java new file mode 100644 index 0000000000..b7ddf87a41 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/MediatorImpl.java @@ -0,0 +1,182 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.impl; + +import java.security.AccessController; +import java.security.PrivilegedAction; +import java.util.List; +import java.util.Map; + +import org.apache.tuscany.sca.databinding.DataBindingExtensionPoint; +import org.apache.tuscany.sca.databinding.DataPipe; +import org.apache.tuscany.sca.databinding.DataPipeTransformer; +import org.apache.tuscany.sca.databinding.Mediator; +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.PushTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.Transformer; +import org.apache.tuscany.sca.databinding.TransformerExtensionPoint; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl; + +/** + * Default Mediator implementation + * + * @version $Rev$ $Date$ + */ +public class MediatorImpl implements Mediator { + + private DataBindingExtensionPoint dataBindings; + private TransformerExtensionPoint transformers; + + public MediatorImpl(DataBindingExtensionPoint dataBindings, TransformerExtensionPoint transformers) { + this.dataBindings = dataBindings; + this.transformers = transformers; + } + + @SuppressWarnings("unchecked") + public Object mediate(Object source, DataType sourceDataType, DataType targetDataType, Map metadata) { + if (sourceDataType == null || sourceDataType.getDataBinding() == null) { + if (source != null) { + Operation operation = (Operation) metadata.get("source.operation"); + sourceDataType = dataBindings.introspectType(source, operation); + } + } + if (sourceDataType == null || targetDataType == null) { + return source; + } else if (sourceDataType.equals(targetDataType)) { + return source; + } + + List path = getTransformerChain(sourceDataType, targetDataType); + + Object result = source; + int size = path.size(); + int i = 0; + while (i < size) { + Transformer transformer = path.get(i); + TransformationContext context = + createTransformationContext(sourceDataType, targetDataType, size, i, transformer, metadata); + // the source and target type + if (transformer instanceof PullTransformer) { + // For intermediate node, set data type to null + result = ((PullTransformer)transformer).transform(result, context); + } else if (transformer instanceof PushTransformer) { + DataPipeTransformer dataPipeFactory = (i < size - 1) ? (DataPipeTransformer)path.get(++i) : null; + DataPipe dataPipe = dataPipeFactory == null ? null : dataPipeFactory.newInstance(); + ((PushTransformer)transformer).transform(result, dataPipe.getSink(), context); + result = dataPipe.getResult(); + } + i++; + } + + return result; + } + + private TransformationContext createTransformationContext(DataType sourceDataType, + DataType targetDataType, + int size, + int index, + Transformer transformer, + Map metadata) { + DataType sourceType = + (index == 0) ? sourceDataType : new DataTypeImpl(transformer.getSourceDataBinding(), Object.class, + sourceDataType.getLogical()); + DataType targetType = + (index == size - 1) ? targetDataType : new DataTypeImpl(transformer.getTargetDataBinding(), + Object.class, targetDataType.getLogical()); + + //FIXME The ClassLoader should be passed in + // Allow privileged access to get ClassLoader. Requires RuntimePermission in security + // policy. + ClassLoader classLoader = AccessController.doPrivileged(new PrivilegedAction() { + public ClassLoader run() { + return Thread.currentThread().getContextClassLoader(); + } + }); + + TransformationContext context = new TransformationContextImpl(sourceType, targetType, classLoader, metadata); + return context; + } + + @SuppressWarnings("unchecked") + public void mediate(Object source, + Object target, + DataType sourceDataType, + DataType targetDataType, + Map metadata) { + if (source == null) { + // Shortcut for null value + return; + } + if (sourceDataType == null || sourceDataType.getDataBinding() == null) { + Operation operation = (Operation) metadata.get("source.operation"); + sourceDataType = dataBindings.introspectType(source, operation); + } + if (sourceDataType == null) { + return; + } else if (sourceDataType.equals(targetDataType)) { + return; + } + + List path = getTransformerChain(sourceDataType, targetDataType); + Object result = source; + int size = path.size(); + for (int i = 0; i < size; i++) { + Transformer transformer = path.get(i); + TransformationContext context = + createTransformationContext(sourceDataType, targetDataType, size, i, transformer, metadata); + + if (transformer instanceof PullTransformer) { + result = ((PullTransformer)transformer).transform(result, context); + } else if (transformer instanceof PushTransformer) { + DataPipeTransformer dataPipeFactory = (i < size - 1) ? (DataPipeTransformer)path.get(++i) : null; + DataPipe dataPipe = dataPipeFactory == null ? null : dataPipeFactory.newInstance(); + Object sink = dataPipe != null ? dataPipe.getSink() : target; + ((PushTransformer)transformer).transform(result, sink, context); + result = (dataPipe != null) ? dataPipe.getResult() : null; + } + } + } + + private List getTransformerChain(DataType sourceDataType, DataType targetDataType) { + String sourceId = sourceDataType.getDataBinding(); + String targetId = targetDataType.getDataBinding(); + List path = transformers.getTransformerChain(sourceId, targetId); + if (path == null) { + TransformationException ex = + new TransformationException("No path found for the transformation: " + sourceId + "->" + targetId); + ex.setSourceDataBinding(sourceId); + ex.setTargetDataBinding(targetId); + throw ex; + } + return path; + } + + public DataBindingExtensionPoint getDataBindings() { + return dataBindings; + } + + public TransformerExtensionPoint getTransformers() { + return transformers; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/PipedTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/PipedTransformer.java new file mode 100644 index 0000000000..a1a89005b3 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/PipedTransformer.java @@ -0,0 +1,70 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.impl; + +import org.apache.tuscany.sca.databinding.DataPipe; +import org.apache.tuscany.sca.databinding.DataPipeTransformer; +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.PushTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; + +/** + * A utility class to connect PushTransformer and DataPipe to create a + * PullTransformer + * + * @param Source type + * @param Intermediate type + * @param Result type + * + * @version $Rev$ $Date$ + */ +public class PipedTransformer implements PullTransformer { + private PushTransformer pusher; + + private DataPipeTransformer pipe; + + /** + * @param pumper + * @param pipe + */ + public PipedTransformer(PushTransformer pumper, DataPipeTransformer pipe) { + super(); + this.pusher = pumper; + this.pipe = pipe; + } + + public R transform(S source, TransformationContext context) { + DataPipe dataPipe = pipe.newInstance(); + pusher.transform(source, dataPipe.getSink(), context); + return dataPipe.getResult(); + } + + public String getSourceDataBinding() { + return pusher.getSourceDataBinding(); + } + + public String getTargetDataBinding() { + return pipe.getTargetDataBinding(); + } + + public int getWeight() { + return pusher.getWeight() + pipe.getWeight(); + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/SimpleType2JavaTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/SimpleType2JavaTransformer.java new file mode 100644 index 0000000000..c91176fc2c --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/SimpleType2JavaTransformer.java @@ -0,0 +1,89 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.impl; + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.SimpleTypeMapper; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.javabeans.SimpleJavaDataBinding; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * Transformer to convert data from a databinding's representation of simple + * types to Java Objects + * + * @version $Rev$ $Date$ + */ +public abstract class SimpleType2JavaTransformer extends BaseTransformer implements + PullTransformer { + + protected SimpleTypeMapper mapper; + + public SimpleType2JavaTransformer() { + this.mapper = new SimpleTypeMapperImpl(); + } + + public SimpleType2JavaTransformer(SimpleTypeMapper mapper) { + this.mapper = (mapper != null) ? mapper : new SimpleTypeMapperImpl(); + } + + public Object transform(T source, TransformationContext context) { + XMLType xmlType = (XMLType)context.getSourceDataType().getLogical(); + QName type = (xmlType != null) ? xmlType.getTypeName() : null; + if (type == null) { + xmlType = (XMLType)context.getTargetDataType().getLogical(); + type = (xmlType != null) ? xmlType.getTypeName() : null; + } + Object result = mapper.toJavaObject(type, getText(source), context); + close(source); + return result; + } + + @Override + protected Class getTargetType() { + return Object.class; + } + + @Override + public int getWeight() { + // Cannot be used for intermediate + return 10000; + } + + /** + * Get the string value from the source + * @param source + * @return A string + */ + protected abstract String getText(T source); + + /** + * To be overrided by the subclass + * @param source + */ + protected void close(T source) { + } + + @Override + public String getTargetDataBinding() { + return SimpleJavaDataBinding.NAME; + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/SimpleTypeMapperImpl.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/SimpleTypeMapperImpl.java new file mode 100644 index 0000000000..32a2313f59 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/SimpleTypeMapperImpl.java @@ -0,0 +1,401 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.impl; + +import java.util.Date; +import java.util.GregorianCalendar; +import java.util.HashMap; +import java.util.Map; + +import javax.xml.datatype.DatatypeConfigurationException; +import javax.xml.datatype.DatatypeFactory; +import javax.xml.datatype.XMLGregorianCalendar; +import javax.xml.namespace.NamespaceContext; +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.databinding.SimpleTypeMapper; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.interfacedef.util.TypeInfo; + +/** + * Simple type mapper that maps from XSD types to Java Classes and Java Classes to XSD types. + * + * @version $Rev$ $Date$ + */ +public class SimpleTypeMapperImpl extends XSDDataTypeConverter implements SimpleTypeMapper { + + public static final Map JAVA2XML = new HashMap(); + + public static final String URI_2001_SCHEMA_XSD = "http://www.w3.org/2001/XMLSchema"; + + public static final Map XML2JAVA = new HashMap(); + + public static final QName XSD_ANY = new QName(URI_2001_SCHEMA_XSD, "any"); + + public static final QName XSD_ANYSIMPLETYPE = new QName(URI_2001_SCHEMA_XSD, "anySimpleType"); + + public static final QName XSD_ANYTYPE = new QName(URI_2001_SCHEMA_XSD, "anyType"); + + public static final QName XSD_ANYURI = new QName(URI_2001_SCHEMA_XSD, "anyURI"); + + public static final QName XSD_BASE64 = new QName(URI_2001_SCHEMA_XSD, "base64Binary"); + + public static final QName XSD_BOOLEAN = new QName(URI_2001_SCHEMA_XSD, "boolean"); + + public static final QName XSD_BYTE = new QName(URI_2001_SCHEMA_XSD, "byte"); + + public static final QName XSD_DATE = new QName(URI_2001_SCHEMA_XSD, "date"); + + public static final QName XSD_DATETIME = new QName(URI_2001_SCHEMA_XSD, "dateTime"); + + public static final QName XSD_DAY = new QName(URI_2001_SCHEMA_XSD, "gDay"); + + public static final QName XSD_DECIMAL = new QName(URI_2001_SCHEMA_XSD, "decimal"); + + public static final QName XSD_DOUBLE = new QName(URI_2001_SCHEMA_XSD, "double"); + + public static final QName XSD_DURATION = new QName(URI_2001_SCHEMA_XSD, "duration"); + + public static final QName XSD_ENTITIES = new QName(URI_2001_SCHEMA_XSD, "ENTITIES"); + + public static final QName XSD_ENTITY = new QName(URI_2001_SCHEMA_XSD, "ENTITY"); + + public static final QName XSD_FLOAT = new QName(URI_2001_SCHEMA_XSD, "float"); + + public static final QName XSD_HEXBIN = new QName(URI_2001_SCHEMA_XSD, "hexBinary"); + + public static final QName XSD_IDREF = new QName(URI_2001_SCHEMA_XSD, "IDREF"); + + public static final QName XSD_IDREFS = new QName(URI_2001_SCHEMA_XSD, "IDREFS"); + + public static final QName XSD_INT = new QName(URI_2001_SCHEMA_XSD, "int"); + + public static final QName XSD_INTEGER = new QName(URI_2001_SCHEMA_XSD, "integer"); + + public static final QName XSD_LONG = new QName(URI_2001_SCHEMA_XSD, "long"); + + public static final QName XSD_MONTH = new QName(URI_2001_SCHEMA_XSD, "gMonth"); + + public static final QName XSD_MONTHDAY = new QName(URI_2001_SCHEMA_XSD, "gMonthDay"); + + public static final QName XSD_NAME = new QName(URI_2001_SCHEMA_XSD, "Name"); + + public static final QName XSD_NCNAME = new QName(URI_2001_SCHEMA_XSD, "NCName"); + + public static final QName XSD_NEGATIVEINTEGER = new QName(URI_2001_SCHEMA_XSD, "negativeInteger"); + + public static final QName XSD_NMTOKEN = new QName(URI_2001_SCHEMA_XSD, "NMTOKEN"); + + public static final QName XSD_NMTOKENS = new QName(URI_2001_SCHEMA_XSD, "NMTOKENS"); + + public static final QName XSD_NONNEGATIVEINTEGER = new QName(URI_2001_SCHEMA_XSD, "nonNegativeInteger"); + + public static final QName XSD_NONPOSITIVEINTEGER = new QName(URI_2001_SCHEMA_XSD, "nonPositiveInteger"); + + public static final QName XSD_NORMALIZEDSTRING = new QName(URI_2001_SCHEMA_XSD, "normalizedString"); + + public static final QName XSD_NOTATION = new QName(URI_2001_SCHEMA_XSD, "NOTATION"); + + public static final QName XSD_POSITIVEINTEGER = new QName(URI_2001_SCHEMA_XSD, "positiveInteger"); + + public static final QName XSD_QNAME = new QName(URI_2001_SCHEMA_XSD, "QName"); + + public static final QName XSD_SHORT = new QName(URI_2001_SCHEMA_XSD, "short"); + + public static final Map XSD_SIMPLE_TYPES = new HashMap(); + + public static final QName XSD_STRING = new QName(URI_2001_SCHEMA_XSD, "string"); + + public static final QName XSD_TIME = new QName(URI_2001_SCHEMA_XSD, "time"); + + public static final QName XSD_TOKEN = new QName(URI_2001_SCHEMA_XSD, "token"); + + public static final QName XSD_UNSIGNEDBYTE = new QName(URI_2001_SCHEMA_XSD, "unsignedByte"); + + public static final QName XSD_UNSIGNEDINT = new QName(URI_2001_SCHEMA_XSD, "unsignedInt"); + + public static final QName XSD_UNSIGNEDLONG = new QName(URI_2001_SCHEMA_XSD, "unsignedLong"); + + public static final QName XSD_UNSIGNEDSHORT = new QName(URI_2001_SCHEMA_XSD, "unsignedShort"); + + public static final QName XSD_YEAR = new QName(URI_2001_SCHEMA_XSD, "gYear"); + + public static final QName XSD_YEARMONTH = new QName(URI_2001_SCHEMA_XSD, "gYearMonth"); + + private static final String[] XSD_TYPE_NAMES = + {"string", "boolean", "double", "float", "int", "integer", "long", "short", "byte", "decimal", "base64Binary", + "hexBinary", "anySimpleType", "anyType", "any", "QName", "dateTime", "date", "time", "normalizedString", + "token", "unsignedLong", "unsignedInt", "unsignedShort", "unsignedByte", "positiveInteger", "negativeInteger", + "nonNegativeInteger", "nonPositiveInteger", "gYearMonth", "gMonthDay", "gYear", "gMonth", "gDay", "duration", + "Name", "NCName", "NMTOKEN", "NMTOKENS", "NOTATION", "ENTITY", "ENTITIES", "IDREF", "IDREFS", "anyURI", + "language", "ID"}; + + static { + for (String type : XSD_TYPE_NAMES) { + TypeInfo simpleType = new TypeInfo(new QName(URI_2001_SCHEMA_XSD, type), true, null); + XSD_SIMPLE_TYPES.put(type, simpleType); + } + } + + static { + JAVA2XML.put(boolean.class, "boolean"); + JAVA2XML.put(byte.class, "byte"); + JAVA2XML.put(short.class, "short"); + JAVA2XML.put(int.class, "int"); + JAVA2XML.put(long.class, "long"); + JAVA2XML.put(float.class, "float"); + JAVA2XML.put(double.class, "double"); + JAVA2XML.put(Boolean.class, "boolean"); + JAVA2XML.put(Byte.class, "byte"); + JAVA2XML.put(Short.class, "short"); + JAVA2XML.put(Integer.class, "int"); + JAVA2XML.put(Long.class, "long"); + JAVA2XML.put(Float.class, "float"); + JAVA2XML.put(Double.class, "double"); + JAVA2XML.put(java.lang.String.class, "string"); + JAVA2XML.put(java.math.BigInteger.class, "integer"); + JAVA2XML.put(java.math.BigDecimal.class, "decimal"); + JAVA2XML.put(java.util.Calendar.class, "dateTime"); + JAVA2XML.put(java.util.Date.class, "dateTime"); + JAVA2XML.put(javax.xml.namespace.QName.class, "QName"); + JAVA2XML.put(java.net.URI.class, "string"); + JAVA2XML.put(javax.xml.datatype.XMLGregorianCalendar.class, "anySimpleType"); + JAVA2XML.put(javax.xml.datatype.Duration.class, "duration"); + JAVA2XML.put(java.lang.Object.class, "anyType"); + JAVA2XML.put(java.awt.Image.class, "base64Binary"); + JAVA2XML.put(byte[].class, "base64Binary"); + // java2XSD.put(javax.activation.DataHandler.class, "base64Binary"); + JAVA2XML.put(javax.xml.transform.Source.class, "base64Binary"); + JAVA2XML.put(java.util.UUID.class, "string"); + } + + static { + XML2JAVA.put("string", java.lang.String.class); + XML2JAVA.put("integer", java.math.BigInteger.class); + XML2JAVA.put("int", int.class); + XML2JAVA.put("long", long.class); + XML2JAVA.put("short", short.class); + XML2JAVA.put("decimal", java.math.BigDecimal.class); + XML2JAVA.put("float", float.class); + XML2JAVA.put("double", double.class); + XML2JAVA.put("boolean", boolean.class); + XML2JAVA.put("byte", byte.class); + XML2JAVA.put("QName", javax.xml.namespace.QName.class); + XML2JAVA.put("dateTime", javax.xml.datatype.XMLGregorianCalendar.class); + XML2JAVA.put("base64Binary", byte[].class); + XML2JAVA.put("hexBinary", byte[].class); + XML2JAVA.put("unsignedInt", long.class); + XML2JAVA.put("unsignedShort", int.class); + XML2JAVA.put("unsignedByte", short.class); + XML2JAVA.put("time", javax.xml.datatype.XMLGregorianCalendar.class); + XML2JAVA.put("date", javax.xml.datatype.XMLGregorianCalendar.class); + XML2JAVA.put("gDay", javax.xml.datatype.XMLGregorianCalendar.class); + XML2JAVA.put("gMonth", javax.xml.datatype.XMLGregorianCalendar.class); + XML2JAVA.put("gYear", javax.xml.datatype.XMLGregorianCalendar.class); + XML2JAVA.put("gYearMonth", javax.xml.datatype.XMLGregorianCalendar.class); + XML2JAVA.put("gMonthDay", javax.xml.datatype.XMLGregorianCalendar.class); + XML2JAVA.put("anySimpleType", java.lang.Object.class); // For elements + // XML2JAVA.put("anySimpleType", java.lang.String.class); // For + // attributes + XML2JAVA.put("duration", javax.xml.datatype.Duration.class); + XML2JAVA.put("NOTATION", javax.xml.namespace.QName.class); + } + + private DatatypeFactory factory; + + public SimpleTypeMapperImpl() { + super(); + try { + this.factory = DatatypeFactory.newInstance(); + } catch (DatatypeConfigurationException e) { + throw new IllegalArgumentException(e); + } + } + + public static Class getJavaType(QName xmlType) { + if (xmlType != null && URI_2001_SCHEMA_XSD.equals(xmlType.getNamespaceURI())) { + return XML2JAVA.get(xmlType.getLocalPart()); + } else { + return null; + } + } + + public static TypeInfo getXMLType(Class javaType) { + return XSD_SIMPLE_TYPES.get(JAVA2XML.get(javaType)); + } + + public Object toJavaObject(QName simpleType, String literal, TransformationContext context) { + /** + *
    + *
  • xsd:string --- java.lang.String + *
  • xsd:integer --- java.math.BigInteger + *
  • xsd:int --- int + *
  • xsd:long --- long + *
  • xsd:short --- short + *
  • xsd:decimal --- java.math.BigDecimal + *
  • xsd:float --- float + *
  • xsd:double --- double + *
  • xsd:boolean --- boolean + *
  • xsd:byte --- byte + *
  • xsd:QName --- javax.xml.namespace.QName + *
  • xsd:dateTime --- javax.xml.datatype.XMLGregorianCalendar + *
  • xsd:base64Binary --- byte[] + *
  • xsd:hexBinary --- byte[] + *
  • xsd:unsignedInt --- long + *
  • xsd:unsignedShort --- int + *
  • xsd:unsignedByte --- short + *
  • xsd:time --- javax.xml.datatype.XMLGregorianCalendar + *
  • xsd:date --- javax.xml.datatype.XMLGregorianCalendar + *
  • xsd:g* --- javax.xml.datatype.XMLGregorianCalendar + *
  • xsd:anySimpleType (for xsd:element of this type)a + * java.lang.Object + *
  • xsd:anySimpleType (for xsd:attribute of this type) + * java.lang.String + *
  • xsd:duration javax.xml.datatype.Duration + *
  • xsd:NOTATION javax.xml.namespace.QName + *
+ */ + + if (literal == null) { + return null; + } + String value = literal.trim(); + + QName type = simpleType; + if (type.equals(XSD_STRING)) { + return parseString(value); + } else if (type.equals(XSD_INT)) { + return parseInt(value); + } else if (type.equals(XSD_INTEGER)) { + return parseInteger(value); + } else if (type.equals(XSD_INT)) { + return parseInt(value); + } else if (type.equals(XSD_FLOAT)) { + return parseFloat(value); + } else if (type.equals(XSD_DOUBLE)) { + return parseDouble(value); + } else if (type.equals(XSD_SHORT)) { + return parseShort(value); + } else if (type.equals(XSD_DECIMAL)) { + return parseDecimal(value); + } else if (type.equals(XSD_BOOLEAN)) { + return parseBoolean(value); + } else if (type.equals(XSD_BYTE)) { + return parseByte(value); + } else if (type.equals(XSD_LONG)) { + return parseLong(value); + } else if (type.equals(XSD_UNSIGNEDBYTE)) { + return parseUnsignedShort(value); + } else if (type.equals(XSD_UNSIGNEDSHORT)) { + return parseUnsignedShort(value); + } else if (type.equals(XSD_UNSIGNEDINT)) { + return parseUnsignedInt(value); + } else if (type.equals(XSD_UNSIGNEDLONG)) { + return parseUnsignedInt(value); + } else if (type.equals(XSD_DATETIME)) { + return parseDateTime(value); + } else if (type.equals(XSD_DATE)) { + return parseDate(value); + } else if (type.equals(XSD_TIME)) { + return parseTime(value); + } else if (type.equals(XSD_DURATION)) { + return parseDuration(value); + } else if (type.equals(XSD_HEXBIN)) { + return parseHexBinary(value); + } else if (type.equals(XSD_BASE64)) { + return parseBase64Binary(value); + } else if (type.equals(XSD_QNAME)) { + NamespaceContext namespaceContext = + (NamespaceContext)((context != null) ? context.getMetadata().get(NamespaceContext.class.getName()) : null); + return parseQName(value, namespaceContext); + } else if (type.equals(XSD_NOTATION)) { + NamespaceContext namespaceContext = + (NamespaceContext)((context != null) ? context.getMetadata().get(NamespaceContext.class.getName()) : null); + return parseQName(value, namespaceContext); + } else if (type.equals(XSD_YEAR)) { + return factory.newXMLGregorianCalendar(value); + } else if (type.equals(XSD_MONTH)) { + return factory.newXMLGregorianCalendar(value); + } else if (type.equals(XSD_DAY)) { + return factory.newXMLGregorianCalendar(value); + } else if (type.equals(XSD_YEARMONTH)) { + return factory.newXMLGregorianCalendar(value); + } else if (type.equals(XSD_MONTHDAY)) { + return factory.newXMLGregorianCalendar(value); + } else { + return value; + } + } + + @SuppressWarnings("deprecation") + private XMLGregorianCalendar toXMLGregorianCalendar(Date date) { + GregorianCalendar c = + new GregorianCalendar(date.getYear(), date.getMonth(), date.getDate(), date.getHours(), date.getMinutes(), + date.getSeconds()); + return factory.newXMLGregorianCalendar(c); + } + + private XMLGregorianCalendar toXMLGregorianCalendar(GregorianCalendar calendar) { + return factory.newXMLGregorianCalendar(calendar); + } + + public String toXMLLiteral(QName simpleType, Object obj, TransformationContext context) { + if(obj == null) { + // It could be null if nilable=true + return null; + } + if (obj instanceof Float || obj instanceof Double) { + if (obj instanceof Float) { + return printDouble(((Float)obj).floatValue()); + } else { + return printDouble(((Double)obj).doubleValue()); + } + } else if (obj instanceof GregorianCalendar) { + GregorianCalendar calendar = (GregorianCalendar)obj; + return toXMLGregorianCalendar(calendar).toXMLFormat(); + } else if (obj instanceof Date) { + return toXMLGregorianCalendar((Date)obj).toXMLFormat(); + } else if (obj instanceof XMLGregorianCalendar) { + return ((XMLGregorianCalendar)obj).toXMLFormat(); + } else if (obj instanceof byte[]) { + if (simpleType != null) { + if (simpleType.equals(XSD_BASE64)) { + return printBase64Binary((byte[])obj); + } else if (simpleType.equals(XSD_HEXBIN)) { + return printHexBinary((byte[])obj); + } + } + } else if (obj instanceof QName) { + NamespaceContext namespaceContext = + (NamespaceContext)((context != null) ? context.getMetadata().get(NamespaceContext.class.getName()) : null); + return printQName((QName)obj, namespaceContext); + } + return obj.toString(); + } + + public static boolean isSimpleXSDType(QName typeName) { + if (typeName == null) { + return false; + } + return typeName.getNamespaceURI().equals(URI_2001_SCHEMA_XSD) + && XSD_SIMPLE_TYPES.get(typeName.getLocalPart()) != null; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/TransformationContextImpl.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/TransformationContextImpl.java new file mode 100644 index 0000000000..a6c0639411 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/TransformationContextImpl.java @@ -0,0 +1,113 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.impl; + +import java.lang.ref.WeakReference; +import java.util.HashMap; +import java.util.Map; + +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; + +public class TransformationContextImpl implements TransformationContext { + private DataType sourceDataType; + + private DataType targetDataType; + + private final Map metadata = new HashMap(); + + private WeakReference classLoaderRef; + + public TransformationContextImpl() { + super(); + // This is used only for testing + setClassLoader(Thread.currentThread().getContextClassLoader()); + } + + public TransformationContextImpl(DataType sourceDataType, + DataType targetDataType, + ClassLoader classLoader, + Map metadata) { + super(); + this.sourceDataType = sourceDataType; + this.targetDataType = targetDataType; + setClassLoader(classLoader); + if (metadata != null) { + this.metadata.putAll(metadata); + } + } + + public DataType getSourceDataType() { + return sourceDataType; + } + + public DataType getTargetDataType() { + return targetDataType; + } + + public void setSourceDataType(DataType sourceDataType) { + this.sourceDataType = sourceDataType; + } + + public void setTargetDataType(DataType targetDataType) { + this.targetDataType = targetDataType; + } + + public final void setClassLoader(ClassLoader classLoader) { + this.classLoaderRef = new WeakReference(classLoader); + } + + public ClassLoader getClassLoader() { + return classLoaderRef.get(); + } + + public Map getMetadata() { + return metadata; + } + + /** + * @return the sourceOperation + */ + public Operation getSourceOperation() { + return (Operation) metadata.get("source.operation"); + } + + /** + * @param sourceOperation the sourceOperation to set + */ + public void setSourceOperation(Operation sourceOperation) { + this.metadata.put("source.operation", sourceOperation); + } + + /** + * @return the targetOperation + */ + public Operation getTargetOperation() { + return (Operation) metadata.get("target.operation"); + } + + /** + * @param targetOperation the targetOperation to set + */ + public void setTargetOperation(Operation targetOperation) { + this.metadata.put("target.operation", targetOperation); + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/XSDDataTypeConverter.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/XSDDataTypeConverter.java new file mode 100644 index 0000000000..fb747864e7 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/impl/XSDDataTypeConverter.java @@ -0,0 +1,945 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.impl; + +import java.io.IOException; +import java.io.OutputStream; +import java.io.Writer; +import java.math.BigDecimal; +import java.math.BigInteger; +import java.text.FieldPosition; +import java.text.Format; +import java.text.ParsePosition; +import java.util.Calendar; +import java.util.TimeZone; + +import javax.xml.XMLConstants; +import javax.xml.datatype.DatatypeConfigurationException; +import javax.xml.datatype.DatatypeFactory; +import javax.xml.datatype.Duration; +import javax.xml.namespace.NamespaceContext; +import javax.xml.namespace.QName; + +/** + * Utility class for XSD data type conversions + * + * @version $Rev$ $Date$ + */ +public class XSDDataTypeConverter { + public static final class Base64Binary { + private static final char[] S_BASE64CHAR = + {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', + 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', + 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', + '5', '6', '7', '8', '9', '+', '/'}; + + private static final char S_BASE64PAD = '='; + + private static final byte[] S_DECODETABLE = new byte[128]; + + static { + for (int i = 0; i < S_DECODETABLE.length; i++) { + S_DECODETABLE[i] = Byte.MAX_VALUE; // 127 + } + for (int i = 0; i < S_BASE64CHAR.length; i++) { + // 0 to 63 + S_DECODETABLE[S_BASE64CHAR[i]] = (byte) i; + } + } + + private Base64Binary() { + } + + /** + * + */ + public static byte[] decode(char[] data, int off, int len) { + char[] ibuf = new char[4]; + int ibufcount = 0; + byte[] obuf = new byte[len / 4 * 3 + 3]; + int obufcount = 0; + for (int i = off; i < off + len; i++) { + char ch = data[i]; + if (ch == S_BASE64PAD || ch < S_DECODETABLE.length && S_DECODETABLE[ch] != Byte.MAX_VALUE) { + ibuf[ibufcount++] = ch; + if (ibufcount == ibuf.length) { + ibufcount = 0; + obufcount += decode0(ibuf, obuf, obufcount); + } + } + } + if (obufcount == obuf.length) { + return obuf; + } + byte[] ret = new byte[obufcount]; + System.arraycopy(obuf, 0, ret, 0, obufcount); + return ret; + } + + /** + * + */ + public static void decode(char[] data, int off, int len, OutputStream ostream) throws IOException { + char[] ibuf = new char[4]; + int ibufcount = 0; + byte[] obuf = new byte[3]; + for (int i = off; i < off + len; i++) { + char ch = data[i]; + if (ch == S_BASE64PAD || ch < S_DECODETABLE.length && S_DECODETABLE[ch] != Byte.MAX_VALUE) { + ibuf[ibufcount++] = ch; + if (ibufcount == ibuf.length) { + ibufcount = 0; + int obufcount = decode0(ibuf, obuf, 0); + ostream.write(obuf, 0, obufcount); + } + } + } + } + + /** + * + */ + public static byte[] decode(String data) { + char[] ibuf = new char[4]; + int ibufcount = 0; + byte[] obuf = new byte[data.length() / 4 * 3 + 3]; + int obufcount = 0; + for (int i = 0; i < data.length(); i++) { + char ch = data.charAt(i); + if (ch == S_BASE64PAD || ch < S_DECODETABLE.length && S_DECODETABLE[ch] != Byte.MAX_VALUE) { + ibuf[ibufcount++] = ch; + if (ibufcount == ibuf.length) { + ibufcount = 0; + obufcount += decode0(ibuf, obuf, obufcount); + } + } + } + if (obufcount == obuf.length) { + return obuf; + } + byte[] ret = new byte[obufcount]; + System.arraycopy(obuf, 0, ret, 0, obufcount); + return ret; + } + + /** + * + */ + public static void decode(String data, OutputStream ostream) throws IOException { + char[] ibuf = new char[4]; + int ibufcount = 0; + byte[] obuf = new byte[3]; + for (int i = 0; i < data.length(); i++) { + char ch = data.charAt(i); + if (ch == S_BASE64PAD || ch < S_DECODETABLE.length && S_DECODETABLE[ch] != Byte.MAX_VALUE) { + ibuf[ibufcount++] = ch; + if (ibufcount == ibuf.length) { + ibufcount = 0; + int obufcount = decode0(ibuf, obuf, 0); + ostream.write(obuf, 0, obufcount); + } + } + } + } + + private static int decode0(char[] ibuf, byte[] obuf, int index) { + int wp = index; + int outlen = 3; + if (ibuf[3] == S_BASE64PAD) { + outlen = 2; + } + if (ibuf[2] == S_BASE64PAD) { + outlen = 1; + } + int b0 = S_DECODETABLE[ibuf[0]]; + int b1 = S_DECODETABLE[ibuf[1]]; + int b2 = S_DECODETABLE[ibuf[2]]; + int b3 = S_DECODETABLE[ibuf[3]]; + switch (outlen) { + case 1: + obuf[wp] = (byte) (b0 << 2 & 0xfc | b1 >> 4 & 0x3); + return 1; + case 2: + obuf[wp++] = (byte) (b0 << 2 & 0xfc | b1 >> 4 & 0x3); + obuf[wp] = (byte) (b1 << 4 & 0xf0 | b2 >> 2 & 0xf); + return 2; + case 3: + obuf[wp++] = (byte) (b0 << 2 & 0xfc | b1 >> 4 & 0x3); + obuf[wp++] = (byte) (b1 << 4 & 0xf0 | b2 >> 2 & 0xf); + obuf[wp] = (byte) (b2 << 6 & 0xc0 | b3 & 0x3f); + return 3; + default: + throw new IllegalArgumentException("The character sequence is not base64 encoded."); + } + } + + /** + * Returns base64 representation of specified byte array. + */ + public static String encode(byte[] data) { + return encode(data, 0, data.length); + } + + /** + * Returns base64 representation of specified byte array. + */ + public static String encode(byte[] data, int off, int len) { + if (len <= 0) { + return ""; + } + char[] out = new char[len / 3 * 4 + 4]; + int rindex = off; + int windex = 0; + int rest = len - off; + while (rest >= 3) { + int i = + ((data[rindex] & 0xff) << 16) + ((data[rindex + 1] & 0xff) << 8) + + (data[rindex + 2] & 0xff); + out[windex++] = S_BASE64CHAR[i >> 18]; + out[windex++] = S_BASE64CHAR[(i >> 12) & 0x3f]; + out[windex++] = S_BASE64CHAR[(i >> 6) & 0x3f]; + out[windex++] = S_BASE64CHAR[i & 0x3f]; + rindex += 3; + rest -= 3; + } + if (rest == 1) { + int i = data[rindex] & 0xff; + out[windex++] = S_BASE64CHAR[i >> 2]; + out[windex++] = S_BASE64CHAR[(i << 4) & 0x3f]; + out[windex++] = S_BASE64PAD; + out[windex++] = S_BASE64PAD; + } else if (rest == 2) { + int i = ((data[rindex] & 0xff) << 8) + (data[rindex + 1] & 0xff); + out[windex++] = S_BASE64CHAR[i >> 10]; + out[windex++] = S_BASE64CHAR[(i >> 4) & 0x3f]; + out[windex++] = S_BASE64CHAR[(i << 2) & 0x3f]; + out[windex++] = S_BASE64PAD; + } + return new String(out, 0, windex); + } + + /** + * Outputs base64 representation of the specified byte array to a byte stream. + */ + public static void encode(byte[] data, int off, int len, OutputStream ostream) throws IOException { + if (len <= 0) { + return; + } + byte[] out = new byte[4]; + int rindex = off; + int rest = len - off; + while (rest >= 3) { + int i = + ((data[rindex] & 0xff) << 16) + ((data[rindex + 1] & 0xff) << 8) + + (data[rindex + 2] & 0xff); + out[0] = (byte) S_BASE64CHAR[i >> 18]; + out[1] = (byte) S_BASE64CHAR[(i >> 12) & 0x3f]; + out[2] = (byte) S_BASE64CHAR[(i >> 6) & 0x3f]; + out[3] = (byte) S_BASE64CHAR[i & 0x3f]; + ostream.write(out, 0, 4); + rindex += 3; + rest -= 3; + } + if (rest == 1) { + int i = data[rindex] & 0xff; + out[0] = (byte) S_BASE64CHAR[i >> 2]; + out[1] = (byte) S_BASE64CHAR[(i << 4) & 0x3f]; + out[2] = (byte) S_BASE64PAD; + out[3] = (byte) S_BASE64PAD; + ostream.write(out, 0, 4); + } else if (rest == 2) { + int i = ((data[rindex] & 0xff) << 8) + (data[rindex + 1] & 0xff); + out[0] = (byte) S_BASE64CHAR[i >> 10]; + out[1] = (byte) S_BASE64CHAR[(i >> 4) & 0x3f]; + out[2] = (byte) S_BASE64CHAR[(i << 2) & 0x3f]; + out[3] = (byte) S_BASE64PAD; + ostream.write(out, 0, 4); + } + } + + /** + * Outputs base64 representation of the specified byte array to a character stream. + */ + public static void encode(byte[] data, int off, int len, Writer writer) throws IOException { + if (len <= 0) { + return; + } + char[] out = new char[4]; + int rindex = off; + int rest = len - off; + int output = 0; + while (rest >= 3) { + int i = + ((data[rindex] & 0xff) << 16) + ((data[rindex + 1] & 0xff) << 8) + + (data[rindex + 2] & 0xff); + out[0] = S_BASE64CHAR[i >> 18]; + out[1] = S_BASE64CHAR[(i >> 12) & 0x3f]; + out[2] = S_BASE64CHAR[(i >> 6) & 0x3f]; + out[3] = S_BASE64CHAR[i & 0x3f]; + writer.write(out, 0, 4); + rindex += 3; + rest -= 3; + output += 4; + if (output % 76 == 0) { + writer.write("\n"); + } + } + if (rest == 1) { + int i = data[rindex] & 0xff; + out[0] = S_BASE64CHAR[i >> 2]; + out[1] = S_BASE64CHAR[(i << 4) & 0x3f]; + out[2] = S_BASE64PAD; + out[3] = S_BASE64PAD; + writer.write(out, 0, 4); + } else if (rest == 2) { + int i = ((data[rindex] & 0xff) << 8) + (data[rindex + 1] & 0xff); + out[0] = S_BASE64CHAR[i >> 10]; + out[1] = S_BASE64CHAR[(i >> 4) & 0x3f]; + out[2] = S_BASE64CHAR[(i << 2) & 0x3f]; + out[3] = S_BASE64PAD; + writer.write(out, 0, 4); + } + } + } + + /** + *

+ * Utility class for xs:hexbinary.

+ */ + public static final class HexBinary { + private HexBinary() { + } + + /** + * Converts the string pValue into an array of hex bytes. + */ + public static byte[] decode(String pValue) { + if ((pValue.length() % 2) != 0) { + throw new IllegalArgumentException("A HexBinary string must have even length."); + } + byte[] result = new byte[pValue.length() / 2]; + int j = 0; + int i = 0; + while (i < pValue.length()) { + byte b; + char c = pValue.charAt(i++); + char d = pValue.charAt(i++); + if (c >= '0' && c <= '9') { + b = (byte) ((c - '0') << 4); + } else if (c >= 'A' && c <= 'F') { + b = (byte) ((c - 'A' + 10) << 4); + } else if (c >= 'a' && c <= 'f') { + b = (byte) ((c - 'a' + 10) << 4); + } else { + throw new IllegalArgumentException("Invalid hex digit: " + c); + } + if (d >= '0' && d <= '9') { + b += (byte) (d - '0'); + } else if (d >= 'A' && d <= 'F') { + b += (byte) (d - 'A' + 10); + } else if (d >= 'a' && d <= 'f') { + b += (byte) (d - 'a' + 10); + } else { + throw new IllegalArgumentException("Invalid hex digit: " + d); + } + result[j++] = b; + } + return result; + } + + /** + * Converts the byte array pHexBinary into a string. + */ + public static String encode(byte[] pHexBinary) { + StringBuffer result = new StringBuffer(); + for (int i = 0; i < pHexBinary.length; i++) { + byte b = pHexBinary[i]; + byte c = (byte) ((b & 0xf0) >> 4); + if (c <= 9) { + result.append((char) ('0' + c)); + } else { + result.append((char) ('A' + c - 10)); + } + c = (byte) (b & 0x0f); + if (c <= 9) { + result.append((char) ('0' + c)); + } else { + result.append((char) ('A' + c - 10)); + } + } + return result.toString(); + } + + /** + * Creates a clone of the given byte array. + */ + public static byte[] getClone(byte[] pHexBinary) { + byte[] result = new byte[pHexBinary.length]; + System.arraycopy(pHexBinary, 0, result, 0, pHexBinary.length); + return result; + } + } + + public class XSDDateFormat extends XSDDateTimeFormat { + private static final long serialVersionUID = -1629412916827246627L; + + /** + * Creates a new instance. + */ + public XSDDateFormat() { + super(true, false); + } + } + + /** + *

+ * An instance of {@link java.text.Format}, which may be used to parse and format xs:dateTime values. + *

+ */ + public static class XSDDateTimeFormat extends Format { + private static final long serialVersionUID = -1148332471737068969L; + + final boolean parseDate; + + final boolean parseTime; + + /** + * Creates a new instance. + */ + public XSDDateTimeFormat() { + this(true, true); + } + + XSDDateTimeFormat(boolean pParseDate, boolean pParseTime) { + parseDate = pParseDate; + parseTime = pParseTime; + } + + private void append(StringBuffer pBuffer, int pNum, int pMinLen) { + String s = Integer.toString(pNum); + for (int i = s.length(); i < pMinLen; i++) { + pBuffer.append('0'); + } + pBuffer.append(s); + } + + @Override + public StringBuffer format(Object pCalendar, StringBuffer pBuffer, FieldPosition pPos) { + assert pCalendar != null : "The Calendar argument must not be null."; + assert pBuffer != null : "The StringBuffer argument must not be null."; + assert pPos != null : "The FieldPosition argument must not be null."; + + Calendar cal = (Calendar) pCalendar; + if (parseDate) { + int year = cal.get(Calendar.YEAR); + if (year < 0) { + pBuffer.append('-'); + year = -year; + } + append(pBuffer, year, 4); + pBuffer.append('-'); + append(pBuffer, cal.get(Calendar.MONTH) + 1, 2); + pBuffer.append('-'); + append(pBuffer, cal.get(Calendar.DAY_OF_MONTH), 2); + if (parseTime) { + pBuffer.append('T'); + } + } + if (parseTime) { + append(pBuffer, cal.get(Calendar.HOUR_OF_DAY), 2); + pBuffer.append(':'); + append(pBuffer, cal.get(Calendar.MINUTE), 2); + pBuffer.append(':'); + append(pBuffer, cal.get(Calendar.SECOND), 2); + int millis = cal.get(Calendar.MILLISECOND); + if (millis > 0) { + pBuffer.append('.'); + append(pBuffer, millis, 3); + } + } + TimeZone tz = cal.getTimeZone(); + // JDK 1.4: int offset = tz.getOffset(cal.getTimeInMillis()); + int offset = cal.get(Calendar.ZONE_OFFSET); + if (tz.inDaylightTime(cal.getTime())) { + offset += cal.get(Calendar.DST_OFFSET); + } + if (offset == 0) { + pBuffer.append('Z'); + } else { + if (offset < 0) { + pBuffer.append('-'); + offset = -offset; + } else { + pBuffer.append('+'); + } + int minutes = offset / (60 * 1000); + int hours = minutes / 60; + minutes -= hours * 60; + append(pBuffer, hours, 2); + pBuffer.append(':'); + append(pBuffer, minutes, 2); + } + return pBuffer; + } + + private int parseInt(String pString, int offset, StringBuffer pDigits) { + int length = pString.length(); + int pOffset = offset; + pDigits.setLength(0); + while (pOffset < length) { + char c = pString.charAt(pOffset); + if (Character.isDigit(c)) { + pDigits.append(c); + ++pOffset; + } else { + break; + } + } + return pOffset; + } + + @Override + public Object parseObject(String pString, ParsePosition pParsePosition) { + assert pString != null : "The String argument must not be null."; + assert pParsePosition != null : "The ParsePosition argument must not be null."; + int offset = pParsePosition.getIndex(); + int length = pString.length(); + + boolean isMinus = false; + StringBuffer digits = new StringBuffer(); + int year = 0; + int month = 0; + int mday = 0; + if (parseDate) { + // Sign + if (offset < length) { + char c = pString.charAt(offset); + if (c == '+') { + ++offset; + } else if (c == '-') { + ++offset; + isMinus = true; + } + } + + offset = parseInt(pString, offset, digits); + if (digits.length() < 4) { + pParsePosition.setErrorIndex(offset); + return null; + } + year = Integer.parseInt(digits.toString()); + + if (offset < length && pString.charAt(offset) == '-') { + ++offset; + } else { + pParsePosition.setErrorIndex(offset); + return null; + } + + offset = parseInt(pString, offset, digits); + if (digits.length() != 2) { + pParsePosition.setErrorIndex(offset); + return null; + } + month = Integer.parseInt(digits.toString()); + + if (offset < length && pString.charAt(offset) == '-') { + ++offset; + } else { + pParsePosition.setErrorIndex(offset); + return null; + } + + offset = parseInt(pString, offset, digits); + if (digits.length() != 2) { + pParsePosition.setErrorIndex(offset); + return null; + } + mday = Integer.parseInt(digits.toString()); + + if (parseTime) { + if (offset < length && pString.charAt(offset) == 'T') { + ++offset; + } else { + pParsePosition.setErrorIndex(offset); + return null; + } + } + } else { + year = month = mday = 0; + } + + int hour = 0; + int minute = 0; + int second = 0; + int millis = 0; + if (parseTime) { + offset = parseInt(pString, offset, digits); + if (digits.length() != 2) { + pParsePosition.setErrorIndex(offset); + return null; + } + hour = Integer.parseInt(digits.toString()); + + if (offset < length && pString.charAt(offset) == ':') { + ++offset; + } else { + pParsePosition.setErrorIndex(offset); + return null; + } + + offset = parseInt(pString, offset, digits); + if (digits.length() != 2) { + pParsePosition.setErrorIndex(offset); + return null; + } + minute = Integer.parseInt(digits.toString()); + + if (offset < length && pString.charAt(offset) == ':') { + ++offset; + } else { + pParsePosition.setErrorIndex(offset); + return null; + } + + offset = parseInt(pString, offset, digits); + if (digits.length() != 2) { + pParsePosition.setErrorIndex(offset); + return null; + } + second = Integer.parseInt(digits.toString()); + + if (offset < length && pString.charAt(offset) == '.') { + ++offset; + offset = parseInt(pString, offset, digits); + if (digits.length() > 0) { + millis = Integer.parseInt(digits.toString()); + } else { + millis = 0; + } + } else { + millis = 0; + } + } else { + hour = minute = second = millis = 0; + } + + digits.setLength(0); + digits.append("GMT"); + if (offset < length) { + char c = pString.charAt(offset); + if (c == 'Z') { + // Ignore UTC, it is the default + ++offset; + } else if (c == '+' || c == '-') { + digits.append(c); + ++offset; + for (int i = 0; i < 5; i++) { + if (offset >= length) { + pParsePosition.setErrorIndex(offset); + return null; + } + c = pString.charAt(offset); + if ((i != 2 && Character.isDigit(c)) || (i == 2 && c == ':')) { + digits.append(c); + } else { + pParsePosition.setErrorIndex(offset); + return null; + } + ++offset; + } + } + } + + Calendar cal = Calendar.getInstance(TimeZone.getTimeZone(digits.toString())); + cal.set(isMinus ? -year : year, parseDate ? month - 1 : month, mday, hour, minute, second); + cal.set(Calendar.MILLISECOND, millis); + pParsePosition.setIndex(offset); + return cal; + } + } + + public static class XSDTimeFormat extends XSDDateTimeFormat { + private static final long serialVersionUID = 1346506860724640517L; + + /** + * Creates a new instance. + */ + public XSDTimeFormat() { + super(false, true); + } + } + + private static final long MAX_UNSIGNED_INT = (((long) Integer.MAX_VALUE) * 2) + 1; + + private static final int MAX_UNSIGNED_SHORT = Short.MAX_VALUE * 2 + 1; + + public String parseAnySimpleType(String value) { + return value; + } + + public byte[] parseBase64Binary(String value) { + return Base64Binary.decode(value); + } + + public boolean parseBoolean(String value) { + return Boolean.valueOf(value).booleanValue(); + } + + public byte parseByte(String value) { + return Byte.parseByte(value); + } + + public Calendar parseDate(String value) { + XSDDateFormat format = new XSDDateFormat(); + ParsePosition pos = new ParsePosition(0); + Calendar cal = (Calendar) format.parseObject(value, pos); + if (cal == null) { + throw new IllegalArgumentException("Failed to parse date " + value + " at:" + + value.substring(pos.getErrorIndex())); + } + return cal; + } + + public Calendar parseDateTime(String value) { + XSDDateTimeFormat format = new XSDDateTimeFormat(); + ParsePosition pos = new ParsePosition(0); + Calendar cal = (Calendar) format.parseObject(value, pos); + if (cal == null) { + throw new IllegalArgumentException("Failed to parse dateTime " + value + " at:" + + value.substring(pos.getErrorIndex())); + } + return cal; + } + + public BigDecimal parseDecimal(String value) { + return new BigDecimal(value); + } + + public double parseDouble(String value) { + if ("INF".equals(value)) { + return Double.POSITIVE_INFINITY; + } else if ("-INF".equals(value)) { + return Double.NEGATIVE_INFINITY; + } else if ("NaN".equals(value)) { + return Double.NaN; + } else { + return Double.parseDouble(value); + } + } + + public Duration parseDuration(String pDuration) { + try { + return DatatypeFactory.newInstance().newDuration(pDuration); + } catch (DatatypeConfigurationException e) { + throw new IllegalArgumentException(e); + } + } + + public float parseFloat(String value) { + if ("INF".equals(value)) { + return Float.POSITIVE_INFINITY; + } else if ("-INF".equals(value)) { + return Float.NEGATIVE_INFINITY; + } else if ("NaN".equals(value)) { + return Float.NaN; + } else { + return Float.parseFloat(value); + } + } + + public byte[] parseHexBinary(String value) { + return HexBinary.decode(value); + } + + public int parseInt(String value) { + return Integer.parseInt(value); + } + + public BigInteger parseInteger(String value) { + return new BigInteger(value); + } + + public long parseLong(String value) { + return Long.parseLong(value); + } + + public QName parseQName(String value, NamespaceContext context) { + int offset = value.indexOf(':'); + String uri; + String localName; + switch (offset) { + case -1: + localName = value; + uri = context.getNamespaceURI(""); + if (uri == null) { + // Should not happen, indicates an error in the + // NamespaceContext + // implementation + throw new IllegalArgumentException("The default prefix is not bound."); + } + break; + case 0: + throw new IllegalArgumentException("Default prefix must be indicated by not using a colon: " + + value); + default: + String prefix = value.substring(0, offset); + localName = value.substring(offset + 1); + uri = context.getNamespaceURI(prefix); + if (uri == null) { + throw new IllegalArgumentException("The prefix " + prefix + " is not bound."); + } + } + return new QName(uri, localName); + } + + public short parseShort(String value) { + return Short.parseShort(value); + } + + public String parseString(String value) { + return value; + } + + public Calendar parseTime(String value) { + XSDTimeFormat format = new XSDTimeFormat(); + ParsePosition pos = new ParsePosition(0); + Calendar cal = (Calendar) format.parseObject(value, pos); + if (cal == null) { + throw new IllegalArgumentException("Failed to parse time " + value + " at:" + + value.substring(pos.getErrorIndex())); + } + return cal; + } + + public long parseUnsignedInt(String value) { + long l = Long.parseLong(value); + if (l < 0) { + throw new IllegalArgumentException("Failed to parse UnsignedInt " + value + + ": result is negative"); + } + if (l > MAX_UNSIGNED_INT) { + throw new IllegalArgumentException("Failed to parse UnsignedInt " + value + + ": result exceeds maximum value " + MAX_UNSIGNED_INT); + } + return l; + } + + public int parseUnsignedShort(String value) { + int i = Integer.parseInt(value); + if (i < 0) { + throw new IllegalArgumentException("Failed to parse UnsignedShort " + value + + ": result is negative"); + } + if (i > MAX_UNSIGNED_SHORT) { + throw new IllegalArgumentException("Failed to parse UnsignedShort " + value + + ": result exceeds maximum value " + MAX_UNSIGNED_SHORT); + } + return i; + } + + public String printAnySimpleType(String value) { + return value; + } + + public String printBase64Binary(byte[] value) { + return Base64Binary.encode(value); + } + + public String printBoolean(boolean value) { + return (value ? Boolean.TRUE : Boolean.FALSE).toString(); + } + + public String printByte(byte value) { + return Byte.toString(value); + } + + public String printDate(Calendar value) { + return new XSDDateFormat().format(value); + } + + public String printDateTime(Calendar value) { + return new XSDDateTimeFormat().format(value); + } + + public String printDecimal(BigDecimal value) { + return value.toString(); + } + + public String printDouble(double value) { + return Double.toString(value); + } + + public String printDuration(Duration pDuration) { + return pDuration.toString(); + } + + public String printFloat(float value) { + return Float.toString(value); + } + + public String printHexBinary(byte[] value) { + return HexBinary.encode(value); + } + + public String printInt(int value) { + return Integer.toString(value); + } + + public String printInteger(BigInteger value) { + return value.toString(); + } + + public String printLong(long value) { + return Long.toString(value); + } + + public String printQName(QName value, NamespaceContext context) { + String prefix = context.getPrefix(value.getNamespaceURI()); + if (prefix == null) { + throw new IllegalArgumentException("The namespace URI " + value.getNamespaceURI() + + " is not bound."); + } else if (XMLConstants.DEFAULT_NS_PREFIX.equals(prefix)) { + return value.getLocalPart(); + } else { + return prefix + ":" + value.getLocalPart(); + } + } + + public String printShort(short value) { + return Short.toString(value); + } + + public String printString(String value) { + return value; + } + + public String printTime(Calendar value) { + return new XSDTimeFormat().format(value); + } + + public String printUnsignedInt(long value) { + return Long.toString(value); + } + + public String printUnsignedShort(int value) { + return Integer.toString(value); + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/DOMNode2JavaBeanTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/DOMNode2JavaBeanTransformer.java new file mode 100644 index 0000000000..2f95c2a9c6 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/DOMNode2JavaBeanTransformer.java @@ -0,0 +1,97 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.javabeans; + +import java.util.ArrayList; +import java.util.Iterator; +import java.util.List; +import javax.xml.namespace.QName; + +import org.w3c.dom.Document; +import org.w3c.dom.Node; +import org.w3c.dom.NodeList; + +/** + * Transformer to convert data from DOM Node to JavaBean + * + * @version $Rev$ $Date$ + */ +public class DOMNode2JavaBeanTransformer extends XML2JavaBeanTransformer { + + @Override + public Node getRootElement(Node element) throws XML2JavaMapperException { + if (element instanceof Document) { + return ((Document)element).getDocumentElement(); + } else { + return element; + } + + } + + @Override + public Iterator getChildElements(Node parent) throws XML2JavaMapperException { + NodeList nodeList = parent.getChildNodes(); + List nodeArrayList = new ArrayList(nodeList.getLength()); + for (int count = 0; count < nodeList.getLength(); ++count) { + nodeArrayList.add(nodeList.item(count)); + } + + return nodeArrayList.iterator(); + } + + @Override + public String getElementName(Node element) throws XML2JavaMapperException { + return element.getLocalName(); + } + + @Override + public String getText(Node element) throws XML2JavaMapperException { + if (element instanceof Document) { + element = ((Document)element).getDocumentElement(); + } + return element.getTextContent(); + } + + @Override + public boolean isTextElement(Node element) throws XML2JavaMapperException { + return element.getNodeType() == Node.TEXT_NODE; + } + + @Override + public boolean isTextOnly(Node element) throws XML2JavaMapperException { + NodeList childNodes = element.getChildNodes(); + return childNodes.getLength() == 1 && isTextElement(childNodes.item(0)); + } + + @Override + public Node getFirstChildWithName(Node element, QName name) throws XML2JavaMapperException { + Node child; + for (child = element.getFirstChild(); + child != null && !(child.getNodeName() == name.getLocalPart() + && child.getNamespaceURI() == name.getNamespaceURI()) ; + child = child.getNextSibling()) { + } + return child; + } + + @Override + public Class getSourceType() { + return Node.class; + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/Java2XMLMapperException.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/Java2XMLMapperException.java new file mode 100644 index 0000000000..9615f43572 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/Java2XMLMapperException.java @@ -0,0 +1,69 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.javabeans; + +import javax.xml.namespace.QName; + +/** + * This exception is used to encapsulate and rethrow exceptions that arise out + * of converting JavaBean objects to XML + * + * @version $Rev$ $Date$ + */ +public class Java2XMLMapperException extends RuntimeException { + private static final long serialVersionUID = 6811924384399578686L; + + private QName xmlElementName; + private String javaFieldName; + private Class javaType; + + public Java2XMLMapperException(String message) { + super(message); + } + + public Java2XMLMapperException(Throwable cause) { + super(cause); + } + + public String getJavaFieldName() { + return javaFieldName; + } + + public void setJavaFieldName(String javaFieldName) { + this.javaFieldName = javaFieldName; + } + + public Class getJavaType() { + return javaType; + } + + public void setJavaType(Class javaType) { + this.javaType = javaType; + } + + public QName getXmlElementName() { + return xmlElementName; + } + + public void setXmlElementName(QName xmlElementName) { + this.xmlElementName = xmlElementName; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBean2DOMNodeTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBean2DOMNodeTransformer.java new file mode 100644 index 0000000000..58f594751a --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBean2DOMNodeTransformer.java @@ -0,0 +1,79 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.javabeans; + +import javax.xml.namespace.QName; +import javax.xml.parsers.ParserConfigurationException; + +import org.apache.tuscany.sca.databinding.impl.DOMHelper; +import org.w3c.dom.Attr; +import org.w3c.dom.Document; +import org.w3c.dom.Node; + +/** + * Transformer to convert data from a JavaBean object to DOM Node + * + * @version $Rev$ $Date$ + */ +public class JavaBean2DOMNodeTransformer extends JavaBean2XMLTransformer { + + public static final String COLON = ":"; + private Document factory; + + public JavaBean2DOMNodeTransformer() { + super(); + try { + factory = DOMHelper.newDocument(); + } catch (ParserConfigurationException e) { + throw new Java2XMLMapperException(e); + } + } + + @Override + public void appendChild(Node parentElement, Node childElement) throws Java2XMLMapperException { + parentElement.appendChild(childElement); + } + + @Override + public Node createElement(QName qName) throws Java2XMLMapperException { + String qualifedName = + (qName.getPrefix() == null || qName.getPrefix().length() <= 0) ? qName.getLocalPart() + : qName.getPrefix() + COLON + qName.getLocalPart(); + return factory.createElementNS(qName.getNamespaceURI(), qualifedName); + } + + @Override + public void appendText(Node parentElement, String textData) throws Java2XMLMapperException { + Node textNode; + if (textData != null) { + textNode = factory.createTextNode(textData); + } else { + Attr nil = factory.createAttributeNS("http://www.w3.org/2001/XMLSchema-instance", "xsi:nil"); + nil.setValue("true"); + textNode = nil; + } + appendChild(parentElement, textNode); + } + + @Override + public Class getTargetType() { + return Node.class; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBean2XMLStreamReaderTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBean2XMLStreamReaderTransformer.java new file mode 100644 index 0000000000..4942fef0da --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBean2XMLStreamReaderTransformer.java @@ -0,0 +1,68 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.javabeans; + +import javax.xml.stream.XMLStreamReader; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.apache.tuscany.sca.databinding.xml.BeanXMLStreamReaderImpl; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * Transformer to convert data from a JavaBean object to XMLStreamReader. + * + * @version $Rev$ $Date$ + */ +public class JavaBean2XMLStreamReaderTransformer extends BaseTransformer implements + PullTransformer { + + public XMLStreamReader transform(Object source, TransformationContext context) { + try { + javax.xml.namespace.QName name = null; + if (context != null) { + Object logical = context.getSourceDataType().getLogical(); + if (logical instanceof XMLType) { + name = ((XMLType)logical).getElementName(); + } + } + return new BeanXMLStreamReaderImpl(name, source); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return Object.class; + } + + @Override + protected Class getTargetType() { + return XMLStreamReader.class; + } + + @Override + public int getWeight() { + return 50; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBean2XMLTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBean2XMLTransformer.java new file mode 100644 index 0000000000..b96b394bb8 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBean2XMLTransformer.java @@ -0,0 +1,262 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.javabeans; + +import java.lang.reflect.Array; +import java.lang.reflect.Field; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.lang.reflect.Modifier; +import java.util.Date; +import java.util.GregorianCalendar; + +import javax.xml.datatype.XMLGregorianCalendar; +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.apache.tuscany.sca.databinding.impl.SimpleTypeMapperImpl; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * Transformer to convert data from a JavaBean object to xml + * + * @version $Rev$ $Date$ + */ +public abstract class JavaBean2XMLTransformer extends BaseTransformer implements + PullTransformer { + + public static final String GET = "get"; + public static final String PREFIX = "n"; + public static final String PERIOD = "."; + public static final String FWD_SLASH = "/"; + public static final String HTTP = "http://"; + private static int prefixCount = 1; + + protected SimpleTypeMapperImpl mapper; + + public JavaBean2XMLTransformer() { + this.mapper = new SimpleTypeMapperImpl(); + } + + public T transform(Object source, TransformationContext context) { + QName rootElement = null; + if (context != null) { + DataType type = context.getTargetDataType(); + if (type != null) { + Object logical = type.getLogical(); + if (logical instanceof XMLType) { + rootElement = ((XMLType)logical).getElementName(); + } + } + } + //FIXME See how/if we still need to get the metadata here + //QName rootElementName = (QName)context.getTargetDataType().getMetadata("RootElementName"); + //if (rootElementName == null) { + QName rootElementName = new QName(resolveRootElementName(source.getClass())); + //} + + T root = createElement(rootElementName); + appendChildElements(root, resolveElementName(source.getClass()), source.getClass(), source, context); + return root; + } + + private void appendChildElements(T parent, + QName elementName, + Class javaType, + Object javaObject, + TransformationContext context) { + T element = null; + if (javaObject != null) { + if (javaType.isPrimitive() || isSimpleJavaType(javaObject)) { + appendText(parent, mapper.toXMLLiteral(null, javaObject, context)); + } else if (javaType.isArray()) { + int size = Array.getLength(javaObject); + for (int count = 0; count < size; ++count) { + Object item = Array.get(javaObject, count); + element = createElement(elementName); + appendChild(parent, element); + appendChildElements(element, elementName, javaType.getComponentType(), item, context); + } + } else { + Field[] javaFields = javaType.getFields(); + for (Field aField : javaFields) { + try { + QName fieldElementName = new QName(aField.getName()); + if (!aField.getType().isArray()) { + element = createElement(fieldElementName); + appendChild(parent, element); + appendChildElements(element, + fieldElementName, + aField.getType(), + aField.get(javaObject), + context); + } else { + appendChildElements(parent, + fieldElementName, + aField.getType(), + aField.get(javaObject), + context); + } + } catch (IllegalAccessException e) { + Java2XMLMapperException java2xmlEx = new Java2XMLMapperException(e); + java2xmlEx.setJavaFieldName(aField.getName()); + java2xmlEx.setJavaType(javaType); + throw java2xmlEx; + } + } + + Method[] methods = javaType.getMethods(); + String fieldName = null; + for (Method aMethod : methods) { + try { + if (Modifier.isPublic(aMethod.getModifiers()) && aMethod.getName().startsWith(GET) + && aMethod.getParameterTypes().length == 0 + && isMappedGetter(aMethod.getName())) { + fieldName = resolveFieldFromMethod(aMethod.getName()); + try { + javaType.getField(fieldName); + } catch (NoSuchFieldException e) { + QName fieldElementName = new QName(fieldName); + if (aMethod.getReturnType().isArray()) { + appendChildElements(parent, fieldElementName, aMethod.getReturnType(), aMethod + .invoke(javaObject, new Object[0]), context); + } else { + element = createElement(fieldElementName); + appendChild(parent, element); + appendChildElements(element, fieldElementName, aMethod.getReturnType(), aMethod + .invoke(javaObject, new Object[0]), context); + } + } + } + } catch (IllegalAccessException e) { + Java2XMLMapperException java2xmlEx = new Java2XMLMapperException(e); + java2xmlEx.setJavaFieldName(fieldName); + java2xmlEx.setJavaType(javaType); + throw java2xmlEx; + } catch (InvocationTargetException e) { + Java2XMLMapperException java2xmlEx = new Java2XMLMapperException(e); + java2xmlEx.setJavaFieldName(fieldName); + java2xmlEx.setJavaType(javaType); + throw java2xmlEx; + } + } + } + } + } + + /* + * Subclasses can override this method to prevent some getter methods + * from being mapped. The default implementation provided by this class + * maps all getter methods. + */ + protected boolean isMappedGetter(String methodName) { + return true; + } + + @Override + public String getSourceDataBinding() { + return JavaBeansDataBinding.NAME; + } + + @Override + public Class getSourceType() { + return Object.class; + } + + private boolean isSimpleJavaType(Object javaObject) { + if (javaObject instanceof String) { + return true; + } + if (javaObject instanceof Byte || javaObject instanceof Character + || javaObject instanceof Short + || javaObject instanceof Integer + || javaObject instanceof Long + || javaObject instanceof Float + || javaObject instanceof Double + || javaObject instanceof Boolean) { + return true; + } + if (javaObject instanceof GregorianCalendar || javaObject instanceof Date + || javaObject instanceof XMLGregorianCalendar + || javaObject instanceof byte[] + || javaObject instanceof QName) { + return true; + } + return false; + } + + private String resolveRootElementName(Class javaType) { + if (javaType.isArray()) { + return javaType.getComponentType().getSimpleName() + "_collection"; + } else { + return javaType.getSimpleName() + "_instance"; + } + } + + private QName resolveElementName(Class javaType) { + if (javaType.isArray()) { + return new QName(javaType.getComponentType().getSimpleName()); + } else { + return new QName(javaType.getSimpleName()); + } + } + + private String resolveFieldFromMethod(String methodName) { + StringBuffer fieldName = new StringBuffer(); + fieldName.append(Character.toLowerCase(methodName.charAt(GET.length()))); + fieldName.append(methodName.substring(GET.length() + 1)); + return fieldName.toString(); + } + + public String getNexPrefix() { + return PREFIX + prefixCount++; + } + + @Override + public int getWeight() { + return JavaBeansDataBinding.HEAVY_WEIGHT; + } + + /** + * Create an element with the given name + * @param qName + * @return + * @throws Java2XMLMapperException + */ + public abstract T createElement(QName qName) throws Java2XMLMapperException; + + /** + * Create a text node and add it to the parent + * @param parentElement + * @param textData + * @throws Java2XMLMapperException + */ + public abstract void appendText(T parentElement, String textData) throws Java2XMLMapperException; + + /** + * Add the child element to the parent + * @param parentElement + * @param childElement + * @throws Java2XMLMapperException + */ + public abstract void appendChild(T parentElement, T childElement) throws Java2XMLMapperException; +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBeansDataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBeansDataBinding.java new file mode 100644 index 0000000000..c7d21ebc66 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaBeansDataBinding.java @@ -0,0 +1,139 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.javabeans; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.io.ObjectStreamClass; +import java.io.OutputStream; +import java.io.Serializable; + +import org.apache.tuscany.sca.databinding.impl.BaseDataBinding; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; + +/** + * DataBinding for JavaBeans + * + * @version $Rev$ $Date$ + */ +public class JavaBeansDataBinding extends BaseDataBinding { + /** + * Defining a weight to a very high number so that the transformer won't be picked + * up by other paths unless it's the only available path + */ + public static final int HEAVY_WEIGHT = 10000; + public static final String NAME = "java:complexType"; + + public JavaBeansDataBinding() { + super(NAME, Object.class); + } + + protected JavaBeansDataBinding(String name, Class baseType) { + super(name, baseType); + } + + @Override + public Object copy(Object arg, DataType dataType, Operation operation) { + if (arg == null) { + return null; + } + final Class clazz = arg.getClass(); + if (String.class == clazz || clazz.isPrimitive() + || Number.class.isAssignableFrom(clazz) + || Boolean.class.isAssignableFrom(clazz) + || Character.class.isAssignableFrom(clazz) + || Byte.class.isAssignableFrom(clazz)) { + // Immutable classes + return arg; + } + try { + if (arg instanceof Serializable) { + ByteArrayOutputStream bos = new ByteArrayOutputStream(); + ObjectOutputStream oos = getObjectOutputStream(bos); + oos.writeObject(arg); + oos.close(); + bos.close(); + + // Work out which ClassLoader to use for deserializing arg + // We want to use: + // * The ClassLoader of arg if it is not the System ClassLoader + // * The ThreadContext ClassLoader if the ClassLoader of arg is the System ClassLoader + // because Collection classes are loaded by the System ClassLoader but their contents + // may be loaded from another ClassLoader + // + ClassLoader classLoaderToUse = clazz.getClassLoader(); + if (classLoaderToUse == null) + { + // ClassLoader of arg is the System ClassLoader so we will use the ThreadContext ClassLoader + // instead + classLoaderToUse = Thread.currentThread().getContextClassLoader(); + } + + ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray()); + ObjectInputStream ois = getObjectInputStream(bis, classLoaderToUse); + Object objectCopy = ois.readObject(); + ois.close(); + bis.close(); + return objectCopy; + } else { + // return arg; + throw new IllegalArgumentException("Argument type '" + arg.getClass().getCanonicalName() + "' is not Serializable. " + + " Pass-by-value cannot be performed on this argument"); + } + } catch (Exception e) { + throw new IllegalArgumentException("Pass-by-value is not supported for the given object", e); + } + } + + protected ObjectOutputStream getObjectOutputStream(OutputStream os) throws IOException { + return new ObjectOutputStream(os); + } + + protected ObjectInputStream getObjectInputStream(InputStream is, final ClassLoader cl) throws IOException { + ObjectInputStream ois = new ObjectInputStream(is) { + @Override + protected Class resolveClass(ObjectStreamClass desc) throws IOException, ClassNotFoundException { + try { + return Class.forName(desc.getName(), false, cl); + } catch (ClassNotFoundException e) { + try { + // For OSGi, use context ClassLoader if the bundle ClassLoader cannot load the class + if (cl != Thread.currentThread().getContextClassLoader()) { + return Class.forName(desc.getName(), false, Thread.currentThread().getContextClassLoader()); + } + } catch (ClassNotFoundException e1) { + // ignore + } catch (NoClassDefFoundError e1) { + // ignore + } + return super.resolveClass(desc); + } + } + + }; + return ois; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaExceptionDataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaExceptionDataBinding.java new file mode 100644 index 0000000000..7ae64c6a27 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/JavaExceptionDataBinding.java @@ -0,0 +1,35 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.javabeans; + + +/** + * DataBinding for Java Exceptions + * + * @version $Rev$ $Date$ + */ +public class JavaExceptionDataBinding extends JavaBeansDataBinding { + + public static final String NAME = "java:exception"; + + public JavaExceptionDataBinding() { + super(NAME, null); + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/SimpleJavaDataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/SimpleJavaDataBinding.java new file mode 100644 index 0000000000..61a2189c72 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/SimpleJavaDataBinding.java @@ -0,0 +1,79 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.javabeans; + + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.databinding.impl.BaseDataBinding; +import org.apache.tuscany.sca.databinding.impl.SimpleTypeMapperImpl; +import org.apache.tuscany.sca.databinding.xml.XMLStringDataBinding; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.util.TypeInfo; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * DataBinding for Java simple types + * + * @version $Rev$ $Date$ + */ +public class SimpleJavaDataBinding extends BaseDataBinding { + public static final String NAME = "java:simpleType"; + + public SimpleJavaDataBinding() { + super(NAME, Object.class); + } + + @Override + public Object copy(Object arg, DataType dataType, Operation operation) { + if (arg instanceof byte[]) { + return ((byte[])arg).clone(); + } + return arg; + } + + @Override + public boolean introspect(DataType type, Operation operation) { + Class cls = type.getPhysical(); + if (cls == Object.class) { + return false; + } + // HACK: [rfeng] By pass the one know to XMLString + String db = type.getDataBinding(); + if (db != null && (XMLStringDataBinding.NAME.equals(db))) { + return false; + } + if (SimpleTypeMapperImpl.JAVA2XML.keySet().contains(cls)) { + type.setDataBinding(NAME); + QName elementName = null; + Object logical = type.getLogical(); + if (logical instanceof XMLType) { + elementName = ((XMLType)logical).getElementName(); + } + TypeInfo typeInfo = SimpleTypeMapperImpl.getXMLType(cls); + type.setLogical(new XMLType(elementName, typeInfo == null ? null : typeInfo.getQName())); + return true; + } else { + return false; + } + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/XML2JavaBeanTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/XML2JavaBeanTransformer.java new file mode 100644 index 0000000000..01dd8fe963 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/XML2JavaBeanTransformer.java @@ -0,0 +1,329 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.javabeans; + +import java.lang.reflect.Array; +import java.lang.reflect.Constructor; +import java.lang.reflect.Field; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.util.ArrayList; +import java.util.Hashtable; +import java.util.Iterator; +import java.util.List; +import java.util.Map; + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.apache.tuscany.sca.databinding.impl.SimpleTypeMapperImpl; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * Transformer to convert data from XML to JavaBean + * + * @version $Rev$ $Date$ + */ +public abstract class XML2JavaBeanTransformer extends BaseTransformer implements + PullTransformer { + + public static final String SET = "set"; + public static final QName QNAME_MESSAGE = new QName("message"); + + protected SimpleTypeMapperImpl mapper; + + public XML2JavaBeanTransformer() { + this.mapper = new SimpleTypeMapperImpl(); + } + + @Override + public int getWeight() { + return JavaBeansDataBinding.HEAVY_WEIGHT; + } + + public Object transform(T source, TransformationContext context) { + //FIXME why is the logical type sometimes a Class instead of an XMLType? + if (context.getSourceDataType().getLogical() instanceof XMLType) { + XMLType xmlType = (XMLType) context.getSourceDataType().getLogical(); + return toJavaObject(xmlType.getTypeName(), getRootElement(source), context); + } else { + return toJavaObject(null, getRootElement(source), context); + } + } + + public Object toJavaObject(QName xmlType, T xmlElement, TransformationContext context) { + if (xmlType != null && SimpleTypeMapperImpl.isSimpleXSDType(xmlType)) { + return mapper.toJavaObject(xmlType, getText(xmlElement), context); + } else { + Class javaType = (Class)context.getTargetDataType().getPhysical(); + return createJavaObject(xmlElement, javaType, context); + } + } + + @SuppressWarnings("unchecked") + private L createJavaObject(T element, Class javaType, TransformationContext context) + throws XML2JavaMapperException { + if (isTextOnly(element)) { + return (L) mapper.toJavaObject(SimpleTypeMapperImpl.getXMLType(javaType).getQName(), + getText(element), + context); + } else { + String fieldName = null; + try { + L javaInstance; + T detailMsg = null; + if (Throwable.class.isAssignableFrom(javaType)) { + T msgElement = getFirstChildWithName(element, QNAME_MESSAGE); + if (msgElement != null && isTextOnly(msgElement)) { + detailMsg = msgElement; // skip this when handling child elements + Constructor constructor = javaType.getConstructor(new Class[] {String.class}); + javaInstance = (L)constructor.newInstance(new Object[] {getText(detailMsg)}); + } else { + javaInstance = javaType.newInstance(); + } + } else { + javaInstance = javaType.newInstance(); + } + Map> arrayFields = new Hashtable>(); + Map> arraySetters = new Hashtable>(); + + for (Iterator childElements = getChildElements(element); childElements.hasNext(); ) { + T childElement = childElements.next(); + if (!isTextElement(childElement) && childElement != detailMsg) { + fieldName = getElementName(childElement); + try { + Field javaField = javaType.getField(fieldName); + setFieldValue(javaInstance, + javaField, + childElement, + arrayFields, + context); + + } catch (NoSuchFieldException e1) { + setFieldValueUsingSetter(javaType, + javaInstance, + fieldName, + childElement, + arraySetters, + context); + } + } + } + + setArrayValues(javaInstance, arrayFields, arraySetters); + return javaInstance; + } catch (Exception e2) { + XML2JavaMapperException xml2JavaEx = new XML2JavaMapperException(e2); + xml2JavaEx.setJavaType(javaType); + xml2JavaEx.setJavaFieldName(fieldName); + throw xml2JavaEx; + } + } + } + + private void setFieldValue(Object javaInstance, + Field javaField, + T fieldValue, + Map> arrayFields, + TransformationContext context) throws IllegalAccessException { + Class javaFieldType = (Class) javaField.getType(); + + if (javaFieldType.isArray()) { + Class componentType = javaFieldType.getComponentType(); + List fldValueArray = arrayFields.get(javaField); + if (fldValueArray == null) { + fldValueArray = new ArrayList(); + arrayFields.put(javaField, fldValueArray); + } + fldValueArray.add(createJavaObject(fieldValue, componentType, context)); + } else { + javaField.setAccessible(true); + javaField.set(javaInstance, createJavaObject(fieldValue, javaFieldType, context)); + } + } + + private void setFieldValueUsingSetter(Class javaType, + Object javaInstance, + String fieldName, + T fieldValue, + Map> arraySetters, + TransformationContext context) throws IllegalAccessException, + InvocationTargetException { + char firstChar = Character.toUpperCase(fieldName.charAt(0)); + StringBuilder methodName = new StringBuilder(SET + fieldName); + methodName.setCharAt(SET.length(), firstChar); + boolean methodNotFound = true; + + for (int methodCount = 0; methodNotFound && methodCount < javaType.getMethods().length; ++methodCount) { + Method aMethod = javaType.getMethods()[methodCount]; + if (aMethod.getName().equals(methodName.toString()) + && aMethod.getParameterTypes().length == 1) { + Class paramType = aMethod.getParameterTypes()[0]; + + if (paramType.isArray()) { + Class componentType = paramType.getComponentType(); + List setterValueArray = arraySetters.get(aMethod); + if (setterValueArray == null) { + setterValueArray = new ArrayList(); + arraySetters.put(aMethod, setterValueArray); + } + setterValueArray.add(createJavaObject(fieldValue, componentType, context)); + } else { + aMethod.invoke(javaInstance, new Object[] {createJavaObject(fieldValue, + paramType, + context)}); + } + methodNotFound = false; + } + } + + if (methodNotFound) { + XML2JavaMapperException xml2JavaEx = + new XML2JavaMapperException("No field or setter method to configure xml data"); + xml2JavaEx.setJavaFieldName(fieldName); + xml2JavaEx.setJavaType(javaType); + throw xml2JavaEx; + } + } + + private void setArrayValues(Object javaInstance, + Map> arrayFields, + Map> arraySetters) throws IllegalAccessException, + InvocationTargetException { + if (arrayFields.size() > 0) { + for (Field javaField : arrayFields.keySet()) { + javaField.setAccessible(true); + + if (javaField.getType().getComponentType().isPrimitive()) { + javaField.set(javaInstance, createPrimitiveArray(javaField.getType() + .getComponentType(), + arrayFields.get(javaField))); + } else { + javaField.set(javaInstance, + createNonPrimitiveArray(javaField.getType().getComponentType(), + arrayFields.get(javaField))); + } + } + } + + if (arraySetters.size() > 0) { + for (Method aMethod : arraySetters.keySet()) { + Class paramType = aMethod.getParameterTypes()[0]; + if (paramType.getComponentType().isPrimitive()) { + aMethod.invoke(javaInstance, + new Object[] {createPrimitiveArray(paramType.getComponentType(), + arraySetters.get(aMethod))}); + } else { + aMethod.invoke(javaInstance, + new Object[] {createNonPrimitiveArray(paramType.getComponentType(), + arraySetters.get(aMethod))}); + } + } + } + } + + private Object createNonPrimitiveArray(Class fieldType, List values) { + Object objectArray = Array.newInstance(fieldType, values.size()); + for (int count = 0; count < values.size(); ++count) { + Array.set(objectArray, count, values.get(count)); + } + return objectArray; + } + + private Object createPrimitiveArray(Class fieldType, List values) { + if (fieldType.isPrimitive()) { + if (fieldType.getName().equals("int")) { + int[] primitiveValues = new int[values.size()]; + for (int count = 0; count < values.size(); ++count) { + primitiveValues[count] = ((Integer) values.get(count)).intValue(); + } + return primitiveValues; + } else if (fieldType.getName().equals("float")) { + float[] primitiveValues = new float[values.size()]; + for (int count = 0; count < values.size(); ++count) { + primitiveValues[count] = ((Float) values.get(count)).floatValue(); + } + return primitiveValues; + } else if (fieldType.getName().equals("boolean")) { + boolean[] primitiveValues = new boolean[values.size()]; + for (int count = 0; count < values.size(); ++count) { + primitiveValues[count] = ((Boolean) values.get(count)).booleanValue(); + } + return primitiveValues; + } else if (fieldType.getName().equals("char")) { + char[] primitiveValues = new char[values.size()]; + for (int count = 0; count < values.size(); ++count) { + primitiveValues[count] = ((Character) values.get(count)).charValue(); + } + return primitiveValues; + } else if (fieldType.getName().equals("byte")) { + byte[] primitiveValues = new byte[values.size()]; + for (int count = 0; count < values.size(); ++count) { + primitiveValues[count] = ((Byte) values.get(count)).byteValue(); + } + return primitiveValues; + } else if (fieldType.getName().equals("short")) { + short[] primitiveValues = new short[values.size()]; + for (int count = 0; count < values.size(); ++count) { + primitiveValues[count] = ((Short) values.get(count)).shortValue(); + } + return primitiveValues; + } else if (fieldType.getName().equals("long")) { + long[] primitiveValues = new long[values.size()]; + for (int count = 0; count < values.size(); ++count) { + primitiveValues[count] = ((Long) values.get(count)).longValue(); + } + return primitiveValues; + } else if (fieldType.getName().equals("double")) { + double[] primitiveValues = new double[values.size()]; + for (int count = 0; count < values.size(); ++count) { + primitiveValues[count] = ((Double) values.get(count)).doubleValue(); + } + return primitiveValues; + } + } + return values; + } + + public abstract String getText(T source) throws XML2JavaMapperException; + + public abstract Iterator getChildElements(T parent) throws XML2JavaMapperException; + + public abstract String getElementName(T element) throws XML2JavaMapperException; + + public abstract boolean isTextElement(T element) throws XML2JavaMapperException; + + public abstract boolean isTextOnly(T element) throws XML2JavaMapperException; + + public abstract T getFirstChildWithName(T element, QName name) throws XML2JavaMapperException; + + public abstract T getRootElement(T element) throws XML2JavaMapperException; + + @Override + public Class getTargetType() { + return Object.class; + } + + @Override + public String getTargetDataBinding() { + return JavaBeansDataBinding.NAME; + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/XML2JavaMapperException.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/XML2JavaMapperException.java new file mode 100644 index 0000000000..a723fd445c --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/javabeans/XML2JavaMapperException.java @@ -0,0 +1,76 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.javabeans; + +import javax.xml.namespace.QName; + +/** + * This exception is used to encapsulate and rethrow exceptions that arise out + * of converting XML Data to Java Objects. + * + * @version $Rev$ $Date$ + */ +public class XML2JavaMapperException extends RuntimeException { + private static final long serialVersionUID = 6596530102591630642L; + + private QName xmlElementName; + private String javaFieldName; + private Class javaType; + + public XML2JavaMapperException(String message) { + super(message); + } + + public XML2JavaMapperException(Throwable cause) { + super(cause); + } + + public QName getXmlElementName() { + return xmlElementName; + } + + public void setXmlElementName(QName xmlElementName) { + this.xmlElementName = xmlElementName; + } + + public String getJavaFieldName() { + return javaFieldName; + } + + public void setJavaFieldName(String javaFieldName) { + this.javaFieldName = javaFieldName; + } + + public Class getJavaType() { + return javaType; + } + + public void setJavaType(Class javaType) { + this.javaType = javaType; + } + + @Override + public String getMessage() { + return super.getMessage() + " <" + getJavaFieldName() + "> " + " in <" + getJavaType() + ">"; + } + + + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/util/DataTypeHelper.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/util/DataTypeHelper.java new file mode 100644 index 0000000000..847fcf226c --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/util/DataTypeHelper.java @@ -0,0 +1,165 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.util; + +import java.lang.reflect.GenericArrayType; +import java.lang.reflect.ParameterizedType; +import java.lang.reflect.Type; +import java.lang.reflect.TypeVariable; +import java.lang.reflect.WildcardType; +import java.util.ArrayList; +import java.util.HashSet; +import java.util.List; +import java.util.Set; + +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Interface; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.util.WrapperInfo; + +/** + * + * @version $Rev$ $Date$ + */ +public final class DataTypeHelper { + private DataTypeHelper() { + } + + /** + * Find all classes referenced by this data type though java generics + * @param d + * @return + */ + public static Set> findClasses(DataType d) { + Set> classes = new HashSet>(); + Set visited = new HashSet(); + findClasses(d, classes, visited); + return classes; + } + + private static void findClasses(DataType d, Set> classes, Set visited) { + if (d == null) { + return; + } + classes.add(d.getPhysical()); + if (d.getPhysical() != d.getGenericType()) { + findClasses(d.getGenericType(), classes, visited); + } + } + + /** + * Find referenced classes in the generic type + * @param type + * @param classSet + * @param visited + */ + private static void findClasses(Type type, Set> classSet, Set visited) { + if (visited.contains(type) || type == null) { + return; + } + visited.add(type); + if (type instanceof Class) { + Class cls = (Class)type; + if (!cls.isInterface()) { + classSet.add(cls); + } + return; + } else if (type instanceof ParameterizedType) { + ParameterizedType pType = (ParameterizedType)type; + findClasses(pType.getRawType(), classSet, visited); + for (Type t : pType.getActualTypeArguments()) { + findClasses(t, classSet, visited); + } + } else if (type instanceof TypeVariable) { + TypeVariable tv = (TypeVariable)type; + for (Type t : tv.getBounds()) { + findClasses(t, classSet, visited); + } + } else if (type instanceof GenericArrayType) { + GenericArrayType gType = (GenericArrayType)type; + findClasses(gType, classSet, visited); + } else if (type instanceof WildcardType) { + WildcardType wType = (WildcardType)type; + for (Type t : wType.getLowerBounds()) { + findClasses(t, classSet, visited); + } + for (Type t : wType.getUpperBounds()) { + findClasses(t, classSet, visited); + } + } + } + + /** + * Get all the data types in the interface + * @param intf The interface + * @param useWrapper Use wrapper classes? + * @return A list of DataTypes + */ + public static List getDataTypes(Interface intf, boolean useWrapper) { + List dataTypes = new ArrayList(); + for (Operation op : intf.getOperations()) { + getDataTypes(dataTypes, op, useWrapper); + } + return dataTypes; + } + + /** + * Get all the data types in the operation + * @param op The operation + * @param useWrapper Use wrapper classes? + * @return A list of DataTypes + */ + public static List getDataTypes(Operation op, boolean useWrapper) { + List dataTypes = new ArrayList(); + getDataTypes(dataTypes, op, useWrapper); + return dataTypes; + } + + private static void getDataTypes(List dataTypes, Operation op, boolean useWrapper) { + WrapperInfo wrapper = op.getWrapper(); + if (useWrapper && wrapper != null) { + DataType dt1 = wrapper.getInputWrapperType(); + if (dt1 != null) { + dataTypes.add(dt1); + } + DataType dt2 = wrapper.getOutputWrapperType(); + if (dt2 != null) { + dataTypes.add(dt2); + } + } + // FIXME: [rfeng] We may need to find the referenced classes in the child types + // else + { + for (DataType dt1 : op.getInputType().getLogical()) { + dataTypes.add(dt1); + } + DataType dt2 = op.getOutputType(); + if (dt2 != null) { + dataTypes.add(dt2); + } + } + for (DataType dt3 : op.getFaultTypes()) { + DataType dt4 = dt3.getLogical(); + if (dt4 != null) { + dataTypes.add(dt4); + } + } + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/util/LRUCache.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/util/LRUCache.java new file mode 100644 index 0000000000..34a82fd2d3 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/util/LRUCache.java @@ -0,0 +1,88 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.util; + +import java.util.LinkedHashMap; +import java.util.Map; + +/** + * A Simple LRU Cache + * + * @version $Revision$ + * @param + * @param + */ + +public class LRUCache extends LinkedHashMap { + private static final long serialVersionUID = -342098639681884413L; + protected int maxCacheSize = 4096; + + /** + * Default constructor for an LRU Cache The default capacity is 10000 + */ + public LRUCache() { + this(0, 4096, 0.75f, true); + } + + /** + * Constructs a LRUCache with a maximum capacity + * + * @param maximumCacheSize + */ + public LRUCache(int maximumCacheSize) { + this(0, maximumCacheSize, 0.75f, true); + } + + /** + * Constructs an empty LRUCache instance with the specified + * initial capacity, maximumCacheSize,load factor and ordering mode. + * + * @param initialCapacity the initial capacity. + * @param maximumCacheSize + * @param loadFactor the load factor. + * @param accessOrder the ordering mode - true for access-order, + * false for insertion-order. + * @throws IllegalArgumentException if the initial capacity is negative or + * the load factor is non-positive. + */ + + public LRUCache(int initialCapacity, int maximumCacheSize, float loadFactor, boolean accessOrder) { + super(initialCapacity, loadFactor, accessOrder); + this.maxCacheSize = maximumCacheSize; + } + + /** + * @return Returns the maxCacheSize. + */ + public int getMaxCacheSize() { + return maxCacheSize; + } + + /** + * @param maxCacheSize The maxCacheSize to set. + */ + public void setMaxCacheSize(int maxCacheSize) { + this.maxCacheSize = maxCacheSize; + } + + @Override + protected boolean removeEldestEntry(Map.Entry eldest) { + return size() > maxCacheSize; + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/BeanXMLStreamReaderImpl.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/BeanXMLStreamReaderImpl.java new file mode 100644 index 0000000000..3423d3e3b0 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/BeanXMLStreamReaderImpl.java @@ -0,0 +1,296 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + +import java.beans.BeanInfo; +import java.beans.Introspector; +import java.beans.PropertyDescriptor; +import java.lang.reflect.Array; +import java.lang.reflect.Field; +import java.lang.reflect.Method; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collection; +import java.util.Collections; +import java.util.Comparator; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.databinding.impl.SimpleTypeMapperImpl; +import org.apache.tuscany.sca.interfacedef.util.TypeInfo; + +/** + * @version $Rev$ $Date$ + */ +public class BeanXMLStreamReaderImpl extends XmlTreeStreamReaderImpl { + private static final Comparator COMPARATOR = new Comparator() { + public int compare(Accessor o1, Accessor o2) { + return o1.getName().compareTo(o2.getName()); + } + }; + + public static class BeanXmlNodeImpl extends SimpleXmlNodeImpl implements XmlNode { + private static final Object[] NULL = null; + private static final SimpleTypeMapperImpl MAPPER = new SimpleTypeMapperImpl(); + + public BeanXmlNodeImpl(Object bean) { + super(getName(bean == null ? null : bean.getClass()), bean); + } + + public BeanXmlNodeImpl(QName name, Object bean) { + super(name, bean); + } + + private static boolean isSimpleType(Class javaType) { + return SimpleTypeMapperImpl.getXMLType(javaType) != null; + } + + private static String getStringValue(Object o) { + if (o == null) { + return null; + } + TypeInfo info = SimpleTypeMapperImpl.getXMLType(o.getClass()); + if (info != null) { + return MAPPER.toXMLLiteral(info.getQName(), o, null); + } else { + return String.valueOf(o); + } + } + + @Override + public Iterator children() { + if (name == null) { + return null; + } + if (value == null) { + return super.children(); + } + if (isSimpleType(value.getClass())) { + XmlNode textNode = new BeanXmlNodeImpl(null, value); + return Arrays.asList(textNode).iterator(); + } + if (Map.class.isAssignableFrom(value.getClass())) { + List entries = new ArrayList(); + QName entryName = new QName(name.getNamespaceURI(), "entry"); + Map map = (Map)value; + if (map != null) { + for (Object e : map.entrySet()) { + Map.Entry entry = (Map.Entry)e; + entries.add(new BeanXmlNodeImpl(entryName, entry)); + } + } + return entries.iterator(); + } + try { + Map accessorMap = getAccessors(value); + List accessorList = new ArrayList(accessorMap.values()); + Collections.sort(accessorList, COMPARATOR); + + List props = new ArrayList(); + for (Accessor accessor : accessorList) { + Class pType = accessor.getType(); + + QName pName = new QName(name.getNamespaceURI(), accessor.getName()); + Object pValue = accessor.getValue(); + if (pType.isArray()) { + if (pValue != null) { + int i1 = Array.getLength(pValue); + for (int j = 0; j < i1; j++) { + Object o = Array.get(pValue, j); + props.add(new BeanXmlNodeImpl(pName, o)); + } + } else { + // TODO: How to handle null? + } + } else if (Collection.class.isAssignableFrom(pType)) { + Collection objList = (Collection)pValue; + if (objList != null && objList.size() > 0) { + for (Iterator j = objList.iterator(); j.hasNext();) { + Object o = j.next(); + props.add(new BeanXmlNodeImpl(pName, o)); + } + + } else { + // How to handle null + } + } else { + props.add(new BeanXmlNodeImpl(pName, pValue)); + } + } + return props.iterator(); + } catch (Exception e) { + throw new IllegalArgumentException(e); + } + } + + @Override + public QName getName() { + return name; + } + + @Override + public String getValue() { + return getStringValue(value); + } + + private static String getPackageName(Class cls) { + String name = cls.getName(); + int index = name.lastIndexOf('.'); + return index == -1 ? "" : name.substring(0, index); + } + + public static QName getName(Class cls) { + if (cls == null) { + return null; + } + + String packageName = getPackageName(cls); + + if ("".equals(packageName)) { + return new QName("", cls.getSimpleName()); + } + StringBuffer ns = new StringBuffer("http://"); + String[] names = packageName.split("\\."); + for (int i = names.length - 1; i >= 0; i--) { + ns.append(names[i]); + if (i != 0) { + ns.append('.'); + } + } + ns.append('/'); + return new QName(ns.toString(), cls.getSimpleName()); + } + + } + + public BeanXMLStreamReaderImpl(QName name, Object bean) { + super(getXmlNode(name, bean)); + } + + private static BeanXmlNodeImpl getXmlNode(QName name, Object bean) { + BeanXmlNodeImpl root = null; + if (name != null) { + root = new BeanXmlNodeImpl(name, bean); + } else { + root = new BeanXmlNodeImpl(bean); + } + return root; + } + + public static interface Accessor { + String getName(); + + Class getType(); + + Object getValue() throws Exception; + + void setValue(Object value) throws Exception; + } + + private static class FieldAccessor implements Accessor { + private Object target; + private Field field; + + public FieldAccessor(Object target, Field field) { + super(); + this.target = target; + this.field = field; + this.field.setAccessible(true); + } + + public String getName() { + return field.getName(); + } + + public Object getValue() throws Exception { + return field.get(target); + } + + public void setValue(Object value) throws Exception { + field.set(target, value); + } + + public Class getType() { + return field.getType(); + } + + } + + private static class PropertyAccessor implements Accessor { + private Object target; + private PropertyDescriptor prop; + + public PropertyAccessor(Object target, PropertyDescriptor prop) { + super(); + this.target = target; + this.prop = prop; + } + + public String getName() { + return prop.getName(); + } + + public Class getType() { + return prop.getPropertyType(); + } + + public Object getValue() throws Exception { + Method getter = prop.getReadMethod(); + if (getter != null) { + getter.setAccessible(true); + return getter.invoke(target); + } + throw new IllegalAccessException("The property cannot be read: " + getName()); + } + + public void setValue(Object value) throws Exception { + Method setter = prop.getWriteMethod(); + if (setter != null) { + setter.setAccessible(true); + setter.invoke(target); + } + throw new IllegalAccessException("The property cannot be written: " + getName()); + } + + } + + private static Map getAccessors(Object target) throws Exception { + if (target == null) { + return Collections.emptyMap(); + } + Map map = new HashMap(); + Class type = target.getClass(); + for (Field f : type.getFields()) { + map.put(f.getName(), new FieldAccessor(target, f)); + } + BeanInfo info = Introspector.getBeanInfo(type, Object.class); + for (PropertyDescriptor p : info.getPropertyDescriptors()) { + // if (p.getReadMethod() != null && p.getWriteMethod() != null) { + map.put(p.getName(), new PropertyAccessor(target, p)); + // } + } + return map; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMDataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMDataBinding.java new file mode 100644 index 0000000000..e029604722 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMDataBinding.java @@ -0,0 +1,71 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.databinding.WrapperHandler; +import org.apache.tuscany.sca.databinding.impl.BaseDataBinding; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.util.XMLType; +import org.w3c.dom.Node; + +/** + * DOM DataBinding + * + * @version $Rev$ $Date$ + */ +public class DOMDataBinding extends BaseDataBinding { + public static final String NAME = Node.class.getName(); + + public static final String ROOT_NAMESPACE = "http://tuscany.apache.org/xmlns/sca/databinding/dom/1.0"; + public static final QName ROOT_ELEMENT = new QName(ROOT_NAMESPACE, "root"); + + public DOMDataBinding() { + super(NAME, Node.class); + } + + @Override + public WrapperHandler getWrapperHandler() { + return new DOMWrapperHandler(); + } + + @Override + public Object copy(Object source, DataType dataType, Operation operation) { + if (Node.class.isAssignableFrom(source.getClass())) { + Node nodeSource = (Node)source; + return nodeSource.cloneNode(true); + } + return super.copy(source, dataType, operation); + } + + @Override + public boolean introspect(DataType type, Operation operation) { + if (Node.class.isAssignableFrom(type.getPhysical())) { + if (type.getLogical() == null) { + type.setLogical(new XMLType(ROOT_ELEMENT, null)); + } + type.setDataBinding(NAME); + return true; + } + return false; + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMWrapperHandler.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMWrapperHandler.java new file mode 100644 index 0000000000..9e1ebb3522 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMWrapperHandler.java @@ -0,0 +1,141 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + +import java.util.ArrayList; +import java.util.HashSet; +import java.util.List; +import java.util.Set; + +import javax.xml.namespace.QName; +import javax.xml.parsers.ParserConfigurationException; + +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.WrapperHandler; +import org.apache.tuscany.sca.databinding.impl.DOMHelper; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl; +import org.apache.tuscany.sca.interfacedef.util.ElementInfo; +import org.apache.tuscany.sca.interfacedef.util.WrapperInfo; +import org.apache.tuscany.sca.interfacedef.util.XMLType; +import org.w3c.dom.Document; +import org.w3c.dom.Node; +import org.w3c.dom.NodeList; + +public class DOMWrapperHandler implements WrapperHandler { + + public DOMWrapperHandler() { + super(); + } + + public Node create(Operation operation, boolean input) { + try { + WrapperInfo wrapperInfo = operation.getWrapper(); + ElementInfo element = input ? wrapperInfo.getInputWrapperElement() : wrapperInfo.getOutputWrapperElement(); + // Class wrapperClass = input ? wrapperInfo.getInputWrapperClass() : wrapperInfo.getOutputWrapperClass(); + Document document = DOMHelper.newDocument(); + QName name = element.getQName(); + return DOMHelper.createElement(document, name); + } catch (ParserConfigurationException e) { + throw new TransformationException(e); + } + } + + public void setChildren(Node wrapper, + Object[] childObjects, + Operation operation, boolean input) { + List childElements = input? operation.getWrapper().getInputChildElements(): + operation.getWrapper().getOutputChildElements(); + for (int i = 0; i < childElements.size(); i++) { + setChild(wrapper, i, childElements.get(i), childObjects[i]); + } + + } + public void setChild(Node wrapper, int i, ElementInfo childElement, Object value) { + Node node = (Node)value; + if (node.getNodeType() == Node.DOCUMENT_NODE) { + node = ((Document)node).getDocumentElement(); + } + wrapper.appendChild(wrapper.getOwnerDocument().importNode(node, true)); + } + + public List getChildren(Node wrapper, Operation operation, boolean input) { + assert wrapper != null; + List childElements = input? operation.getWrapper().getInputChildElements(): + operation.getWrapper().getOutputChildElements(); + if (wrapper.getNodeType() == Node.DOCUMENT_NODE) { + wrapper = ((Document)wrapper).getDocumentElement(); + } + List elements = new ArrayList(); + NodeList nodes = wrapper.getChildNodes(); + for (int j = 0; j < nodes.getLength(); j++) { + Node node = nodes.item(j); + if (node.getNodeType() == Node.ELEMENT_NODE) { + elements.add(node); + } + } + return elements; + } + + /** + * @see org.apache.tuscany.sca.databinding.WrapperHandler#getWrapperType(Operation, boolean) + */ + public DataType getWrapperType(Operation operation, boolean input) { + WrapperInfo wrapper = operation.getWrapper(); + ElementInfo element = input? wrapper.getInputWrapperElement(): wrapper.getOutputWrapperElement(); + DataType wrapperType = + new DataTypeImpl(DOMDataBinding.NAME, Node.class, new XMLType(element)); + return wrapperType; + } + + public boolean isInstance(Object wrapperObj, + Operation operation, + boolean input) { + WrapperInfo wrapperInfo = operation.getWrapper(); + ElementInfo element = input ? wrapperInfo.getInputWrapperElement() : wrapperInfo.getOutputWrapperElement(); + List childElements = + input ? wrapperInfo.getInputChildElements() : wrapperInfo.getOutputChildElements(); + Node wrapper = (Node)wrapperObj; + if (wrapper.getNodeType() == Node.DOCUMENT_NODE) { + wrapper = ((Document)wrapper).getDocumentElement(); + } + QName elementName = new QName(wrapper.getNamespaceURI(), wrapper.getLocalName()); + if (!element.getQName().equals(elementName)) { + return false; + } + Set names = new HashSet(); + for (ElementInfo e : childElements) { + names.add(e.getQName()); + } + NodeList nodes = wrapper.getChildNodes(); + for (int j = 0; j < nodes.getLength(); j++) { + Node node = nodes.item(j); + if (node.getNodeType() == Node.ELEMENT_NODE) { + elementName = new QName(wrapper.getNamespaceURI(), wrapper.getLocalName()); + if (!names.contains(elementName)) { + return false; + } + } + } + return true; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMXMLStreamReader.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMXMLStreamReader.java new file mode 100644 index 0000000000..8c7a742cdd --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMXMLStreamReader.java @@ -0,0 +1,36 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import org.w3c.dom.Node; + +public class DOMXMLStreamReader extends XmlTreeStreamReaderImpl { + + public DOMXMLStreamReader(Node node) { + super(new DOMXmlNodeImpl(node)); + switch (node.getNodeType()) { + case Node.DOCUMENT_NODE: + break; + case Node.ELEMENT_NODE: + break; + default: + throw new IllegalArgumentException("Illegal node type: " + node); + } + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMXmlNodeImpl.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMXmlNodeImpl.java new file mode 100644 index 0000000000..507c141c33 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DOMXmlNodeImpl.java @@ -0,0 +1,156 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; + +import javax.xml.namespace.QName; + +import org.w3c.dom.Attr; +import org.w3c.dom.Document; +import org.w3c.dom.NamedNodeMap; +import org.w3c.dom.Node; +import org.w3c.dom.NodeList; + +/** + * @version $Rev$ $Date$ + */ +public class DOMXmlNodeImpl implements XmlNode { + private Node node; + private Map namespaces; + private Type type; + + /** + * @param element + */ + public DOMXmlNodeImpl(Node element) { + super(); + if (element.getNodeType() == Node.DOCUMENT_NODE) { + this.node = ((Document)element).getDocumentElement(); + } else { + this.node = element; + } + switch (node.getNodeType()) { + case Node.CDATA_SECTION_NODE: + this.type = Type.CHARACTERS; + break; + case Node.ELEMENT_NODE: + this.type = Type.ELEMENT; + break; + case Node.TEXT_NODE: + this.type = Type.CHARACTERS; + break; + } + } + + /** + * @see org.apache.tuscany.sca.databinding.xml.XmlNode#attributes() + */ + public List attributes() { + if (type != Type.ELEMENT) { + return null; + } + NamedNodeMap attrs = node.getAttributes(); + List xmlAttrs = new ArrayList(); + for (int i = 0; i < attrs.getLength(); i++) { + Attr attr = (Attr)attrs.item(i); + if (!attr.getName().equals("xmlns") && !attr.getName().startsWith("xmlns:")) { + xmlAttrs.add(new SimpleXmlNodeImpl(getQName(attr), attr.getValue(), XmlNode.Type.ATTRIBUTE)); + } + } + return xmlAttrs; + } + + /** + * @see org.apache.tuscany.sca.databinding.xml.XmlNode#children() + */ + public Iterator children() { + if (type != Type.ELEMENT) { + return null; + } + NodeList nodes = node.getChildNodes(); + List xmlNodes = new ArrayList(); + for (int i = 0; i < nodes.getLength(); i++) { + Node child = (Node)nodes.item(i); + int nodeType = child.getNodeType(); + if (nodeType == Node.ELEMENT_NODE || nodeType == Node.TEXT_NODE || nodeType == Node.CDATA_SECTION_NODE) { + xmlNodes.add(new DOMXmlNodeImpl(child)); + } + } + return xmlNodes.iterator(); + } + + /** + * @see org.apache.tuscany.sca.databinding.xml.XmlNode#getName() + */ + public QName getName() { + return getQName(node); + } + + private static QName getQName(Node node) { + int type = node.getNodeType(); + if (type == Node.ELEMENT_NODE || type == Node.ATTRIBUTE_NODE) { + String ns = node.getNamespaceURI(); + String prefix = node.getPrefix(); + String localName = node.getLocalName(); + return new QName(ns == null ? "" : ns, localName, prefix == null ? "" : prefix); + } + return null; + } + + /** + * @see org.apache.tuscany.sca.databinding.xml.XmlNode#getValue() + */ + public String getValue() { + return node.getNodeValue(); + } + + /** + * @see org.apache.tuscany.sca.databinding.xml.XmlNode#namespaces() + */ + public Map namespaces() { + if (type != Type.ELEMENT) { + return null; + } + if (namespaces == null) { + namespaces = new HashMap(); + NamedNodeMap attrs = node.getAttributes(); + for (int i = 0; i < attrs.getLength(); i++) { + Attr attr = (Attr)attrs.item(i); + if ("xmlns".equals(attr.getPrefix())) { + namespaces.put(attr.getLocalName(), attr.getValue()); + } + if ("xmlns".equals(attr.getName())) { + namespaces.put("", attr.getValue()); + } + } + } + return namespaces; + } + + public Type getType() { + return type; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DelegatingNamespaceContext.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DelegatingNamespaceContext.java new file mode 100644 index 0000000000..7f49a50e1e --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/DelegatingNamespaceContext.java @@ -0,0 +1,310 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.util.ArrayList; +import java.util.EmptyStackException; +import java.util.Iterator; +import java.util.List; + +import javax.xml.namespace.NamespaceContext; + +public class DelegatingNamespaceContext implements NamespaceContext { + private static int count; + + private class WrappingIterator implements Iterator { + + private Iterator containedIterator; + + public WrappingIterator(Iterator containedIterator) { + this.containedIterator = containedIterator; + } + + public Iterator getContainedIterator() { + return containedIterator; + } + + public boolean hasNext() { + return containedIterator.hasNext(); + } + + public Object next() { + return containedIterator.next(); + } + + /** + * As per the contract on the API of Namespace context the returned iterator should be immutable + */ + public void remove() { + throw new UnsupportedOperationException(); + } + + public void setContainedIterator(Iterator containedIterator) { + this.containedIterator = containedIterator; + } + } + + private NamespaceContext parentNsContext; + + private FastStack prefixStack = new FastStack(); + + // Keep two ArrayLists for the prefixes and namespaces. They should be in + // sync + // since the index of the entry will be used to relate them + // use the minimum initial capacity to let things handle memory better + + private FastStack uriStack = new FastStack(); + + /** + * Generates a unique namespace prefix that is not in the scope of the NamespaceContext + * + * @return string + */ + public String generateUniquePrefix() { + String prefix = "p" + count++; + // null should be returned if the prefix is not bound! + while (getNamespaceURI(prefix) != null) { + prefix = "p" + count++; + } + + return prefix; + } + + public String getNamespaceURI(String prefix) { + // do the corrections as per the Javadoc + int index = prefixStack.search(prefix); + if (index != -1) { + return uriStack.get(index); + } + if (parentNsContext != null) { + return parentNsContext.getPrefix(prefix); + } + return null; + } + + public NamespaceContext getParentNsContext() { + return parentNsContext; + } + + public String getPrefix(String uri) { + // do the corrections as per the Javadoc + int index = uriStack.search(uri); + if (index != -1) { + return prefixStack.get(index); + } + + if (parentNsContext != null) { + return parentNsContext.getPrefix(uri); + } + return null; + } + + public Iterator getPrefixes(String uri) { + // create an ArrayList that contains the relevant prefixes + String[] uris = uriStack.toArray(new String[uriStack.size()]); + List tempList = new ArrayList(); + for (int i = uris.length - 1; i >= 0; i--) { + if (uris[i].equals(uri)) { + tempList.add(prefixStack.get(i)); + // we assume that array conversion preserves the order + } + } + // by now all the relevant prefixes are collected + // make a new iterator and provide a wrapper iterator to + // obey the contract on the API + return new WrappingIterator(tempList.iterator()); + } + + /** + * Pop a namespace + */ + public void popNamespace() { + prefixStack.pop(); + uriStack.pop(); + } + + /** + * Register a namespace in this context + * + * @param prefix + * @param uri + */ + public void pushNamespace(String prefix, String uri) { + prefixStack.push(prefix); + uriStack.push(uri); + + } + + public void setParentNsContext(NamespaceContext parentNsContext) { + this.parentNsContext = parentNsContext; + } + + /** + * An implementation of the {@link java.util.Stack} API that is based on an ArrayList instead of a + * Vector, so it is not synchronized to protect against multi-threaded access. The implementation is + * therefore operates faster in environments where you do not need to worry about multiple thread contention. + *

+ * The removal order of an ArrayStack is based on insertion order: The most recently added element is + * removed first. The iteration order is not the same as the removal order. The iterator returns elements + * from the bottom up, whereas the {@link #remove()} method removes them from the top down. + *

+ * Unlike Stack, ArrayStack accepts null entries. + */ + public static class FastStack extends ArrayList { + + /** Ensure Serialization compatibility */ + private static final long serialVersionUID = 2130079159931574599L; + + /** + * Constructs a new empty ArrayStack. The initial size is controlled by ArrayList + * and is currently 10. + */ + public FastStack() { + super(); + } + + /** + * Constructs a new empty ArrayStack with an initial size. + * + * @param initialSize the initial size to use + * @throws IllegalArgumentException if the specified initial size is negative + */ + public FastStack(int initialSize) { + super(initialSize); + } + + /** + * Return true if this stack is currently empty. + *

+ * This method exists for compatibility with java.util.Stack. New users of this class should use + * isEmpty instead. + * + * @return true if the stack is currently empty + */ + public boolean empty() { + return isEmpty(); + } + + /** + * Returns the top item off of this stack without removing it. + * + * @return the top item on the stack + * @throws EmptyStackException if the stack is empty + */ + public T peek() throws EmptyStackException { + int n = size(); + if (n <= 0) { + throw new EmptyStackException(); + } else { + return get(n - 1); + } + } + + /** + * Returns the n'th item down (zero-relative) from the top of this stack without removing it. + * + * @param n the number of items down to go + * @return the n'th item on the stack, zero relative + * @throws EmptyStackException if there are not enough items on the stack to satisfy this request + */ + public T peek(int n) throws EmptyStackException { + int m = (size() - n) - 1; + if (m < 0) { + throw new EmptyStackException(); + } else { + return get(m); + } + } + + /** + * Pops the top item off of this stack and return it. + * + * @return the top item on the stack + * @throws EmptyStackException if the stack is empty + */ + public T pop() throws EmptyStackException { + int n = size(); + if (n <= 0) { + throw new EmptyStackException(); + } else { + return remove(n - 1); + } + } + + /** + * Pushes a new item onto the top of this stack. The pushed item is also returned. This is equivalent to calling + * add. + * + * @param item the item to be added + * @return the item just pushed + */ + public Object push(T item) { + add(item); + return item; + } + + /** + * Returns the top-most index for the object in the stack + * + * @param object the object to be searched for + * @return top-most index, or -1 if not found + */ + public int search(T object) { + int i = size() - 1; // Current index + while (i >= 0) { + T current = get(i); + if ((object == null && current == null) || (object != null && object.equals(current))) { + return i; + } + i--; + } + return -1; + } + + /** + * Returns the element on the top of the stack. + * + * @return the element on the top of the stack + * @throws EmptyStackException if the stack is empty + */ + public T get() { + int size = size(); + if (size == 0) { + throw new EmptyStackException(); + } + return get(size - 1); + } + + /** + * Removes the element on the top of the stack. + * + * @return the removed element + * @throws EmptyStackException if the stack is empty + */ + public T remove() { + int size = size(); + if (size == 0) { + throw new EmptyStackException(); + } + return remove(size - 1); + } + + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputSource2Node.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputSource2Node.java new file mode 100644 index 0000000000..5f583da283 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputSource2Node.java @@ -0,0 +1,67 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.transform.Source; +import javax.xml.transform.dom.DOMResult; +import javax.xml.transform.stream.StreamSource; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.w3c.dom.Node; +import org.xml.sax.InputSource; + +/** + * Push DOM InputSource to Node + * + * @version $Rev$ $Date$ + */ +public class InputSource2Node extends BaseTransformer implements + PullTransformer { + private static final Source2ResultTransformer TRANSFORMER = new Source2ResultTransformer(); + + public Node transform(InputSource source, TransformationContext context) { + try { + Source streamSource = new StreamSource(source.getCharacterStream()); + DOMResult result = new DOMResult(); + TRANSFORMER.transform(streamSource, result, context); + return result.getNode(); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + public Class getSourceType() { + return InputSource.class; + } + + @Override + public Class getTargetType() { + return Node.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputSource2SAX.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputSource2SAX.java new file mode 100644 index 0000000000..39116ba4a1 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputSource2SAX.java @@ -0,0 +1,65 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import org.apache.tuscany.sca.databinding.PushTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.xml.sax.ContentHandler; +import org.xml.sax.InputSource; +import org.xml.sax.XMLReader; +import org.xml.sax.helpers.XMLReaderFactory; + +/** + * Push InputSource to SAX + * + * @version $Rev$ $Date$ + */ +public class InputSource2SAX extends BaseTransformer implements + PushTransformer { + + public void transform(InputSource source, ContentHandler target, TransformationContext context) { + try { + XMLReader reader = XMLReaderFactory.createXMLReader(); + reader.setFeature("http://xml.org/sax/features/namespaces", true); + reader.setFeature("http://xml.org/sax/features/namespace-prefixes", false); + reader.setContentHandler(target); + reader.parse(source); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + public Class getSourceType() { + return InputSource.class; + } + + @Override + public Class getTargetType() { + return ContentHandler.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputStream2Node.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputStream2Node.java new file mode 100644 index 0000000000..e40c3006fb --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputStream2Node.java @@ -0,0 +1,69 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.InputStream; + +import javax.xml.transform.Source; +import javax.xml.transform.dom.DOMResult; +import javax.xml.transform.sax.SAXSource; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.w3c.dom.Node; +import org.xml.sax.InputSource; + +/** + * Push DOM InputSource to Node + * + * @version $Rev$ $Date$ + */ +public class InputStream2Node extends BaseTransformer implements + PullTransformer { + private static final Source2ResultTransformer TRANSFORMER = new Source2ResultTransformer(); + + public Node transform(InputStream source, TransformationContext context) { + try { + Source streamSource = new SAXSource(new InputSource(source)); + DOMResult result = new DOMResult(); + TRANSFORMER.transform(streamSource, result, context); + return result.getNode(); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + public Class getSourceType() { + return InputStream.class; + } + + @Override + public Class getTargetType() { + return Node.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputStream2SAX.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputStream2SAX.java new file mode 100644 index 0000000000..3b7bd3088a --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/InputStream2SAX.java @@ -0,0 +1,64 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.InputStream; + +import org.apache.tuscany.sca.databinding.PushTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.xml.sax.ContentHandler; +import org.xml.sax.InputSource; +import org.xml.sax.XMLReader; +import org.xml.sax.helpers.XMLReaderFactory; + +/** + * Push InputStream to SAX + * + * @version $Rev$ $Date$ + */ +public class InputStream2SAX extends BaseTransformer implements + PushTransformer { + public void transform(InputStream source, ContentHandler target, TransformationContext context) { + try { + XMLReader reader = XMLReaderFactory.createXMLReader(); + reader.setContentHandler(target); + reader.parse(new InputSource(source)); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + public Class getSourceType() { + return InputStream.class; + } + + @Override + public Class getTargetType() { + return ContentHandler.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NameValueArrayStreamReader.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NameValueArrayStreamReader.java new file mode 100644 index 0000000000..5a31d9db91 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NameValueArrayStreamReader.java @@ -0,0 +1,403 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.namespace.NamespaceContext; +import javax.xml.namespace.QName; +import javax.xml.stream.Location; +import javax.xml.stream.XMLStreamException; + +public class NameValueArrayStreamReader implements XMLFragmentStreamReader { + + private static final int START_ELEMENT_STATE = 0; + private static final int TEXT_STATE = 1; + private static final int END_ELEMENT_STATE = 2; + private static final int FINAL_END_ELEMENT_STATE = 3; + private static final int START_ELEMENT_STATE_WITH_NULL = 4; + + private DelegatingNamespaceContext namespaceContext = new DelegatingNamespaceContext(); + // the index of the array + private int arrayIndex; + + private QName name; + private String[] values; + + // start element is the default state + private int state = START_ELEMENT_STATE; + + public NameValueArrayStreamReader(QName name, String[] values) { + this.name = name; + this.values = values; + } + + public void setParentNamespaceContext(NamespaceContext nsContext) { + this.namespaceContext.setParentNsContext(nsContext); + } + + public void init() { + // TODO what if the QName namespace has not been declared + } + + public Object getProperty(String string) throws IllegalArgumentException { + return null; + } + + /** + * @throws XMLStreamException + */ + public int next() throws XMLStreamException { + switch (state) { + case START_ELEMENT_STATE: + if (values.length > 0) { + state = TEXT_STATE; + return CHARACTERS; + } else { + state = FINAL_END_ELEMENT_STATE; + return END_ELEMENT; + } + + case START_ELEMENT_STATE_WITH_NULL: + if (arrayIndex == (values.length - 1)) { + state = FINAL_END_ELEMENT_STATE; + } else { + state = END_ELEMENT_STATE; + } + return END_ELEMENT; + case FINAL_END_ELEMENT_STATE: + // oops, not supposed to happen! + throw new XMLStreamException("end already reached!"); + case END_ELEMENT_STATE: + // we've to have more values since this is not the + // last value + // increment the counter + arrayIndex++; + if (values[arrayIndex] == null) { + state = START_ELEMENT_STATE_WITH_NULL; + } else { + state = START_ELEMENT_STATE; + } + return START_ELEMENT; + case TEXT_STATE: + if (arrayIndex == (values.length - 1)) { + state = FINAL_END_ELEMENT_STATE; + return END_ELEMENT; + } else { + state = END_ELEMENT_STATE; + return END_ELEMENT; + } + + default: + throw new XMLStreamException("unknown event type!"); + } + } + + public void require(int i, String string, String string1) throws XMLStreamException { + // nothing done here + } + + public String getElementText() throws XMLStreamException { + return null; // not implemented + } + + public int nextTag() throws XMLStreamException { + return 0; // not implemented + } + + public String getAttributeValue(String string, String string1) { + if (state == TEXT_STATE) { + // TODO something + return null; + } else { + return null; + } + + } + + public int getAttributeCount() { + if (state == START_ELEMENT_STATE_WITH_NULL) { + return 1; + } + if (state == START_ELEMENT_STATE) { + return 0; + } else { + throw new IllegalStateException(); + } + + } + + public QName getAttributeName(int i) { + if (state == START_ELEMENT_STATE_WITH_NULL && i == 0) { + return NIL_QNAME; + } + if (state == START_ELEMENT_STATE) { + return null; + } else { + throw new IllegalStateException(); + } + } + + public String getAttributeNamespace(int i) { + if (state == START_ELEMENT_STATE_WITH_NULL && i == 0) { + return NIL_QNAME.getNamespaceURI(); + } + if (state == START_ELEMENT_STATE) { + return null; + } else { + throw new IllegalStateException(); + } + } + + public String getAttributeLocalName(int i) { + if (state == START_ELEMENT_STATE_WITH_NULL && i == 0) { + return NIL_QNAME.getLocalPart(); + } + if (state == START_ELEMENT_STATE) { + return null; + } else { + throw new IllegalStateException(); + } + } + + public String getAttributePrefix(int i) { + if (state == START_ELEMENT_STATE_WITH_NULL && i == 0) { + return NIL_QNAME.getPrefix(); + } + if (state == START_ELEMENT_STATE) { + return null; + } else { + throw new IllegalStateException(); + } + } + + public String getAttributeType(int i) { + return null; // not implemented + } + + public String getAttributeValue(int i) { + if (state == START_ELEMENT_STATE_WITH_NULL && i == 0) { + return NIL_VALUE_TRUE; + } + if (state == START_ELEMENT_STATE) { + return null; + } else { + throw new IllegalStateException(); + } + } + + public boolean isAttributeSpecified(int i) { + return false; // not supported + } + + public int getNamespaceCount() { + if (state == START_ELEMENT_STATE_WITH_NULL && isXsiNamespacePresent()) { + return 1; + } else { + return 0; + } + + } + + public String getNamespacePrefix(int i) { + if (state == START_ELEMENT_STATE_WITH_NULL && isXsiNamespacePresent() && i == 0) { + return NIL_QNAME.getPrefix(); + } else { + return null; + } + } + + public String getNamespaceURI(int i) { + if (state == START_ELEMENT_STATE_WITH_NULL && isXsiNamespacePresent() && i == 0) { + return NIL_QNAME.getNamespaceURI(); + } else { + return null; + } + } + + public NamespaceContext getNamespaceContext() { + return this.namespaceContext; + } + + public boolean isDone() { + return state == FINAL_END_ELEMENT_STATE; + } + + public int getEventType() { + switch (state) { + case START_ELEMENT_STATE: + return START_ELEMENT; + case END_ELEMENT_STATE: + return END_ELEMENT; + case TEXT_STATE: + return CHARACTERS; + case FINAL_END_ELEMENT_STATE: + return END_ELEMENT; + default: + throw new UnsupportedOperationException(); + // we've no idea what this is!!!!! + } + + } + + public String getText() { + if (state == TEXT_STATE) { + return values[arrayIndex]; + } else { + throw new IllegalStateException(); + } + } + + public char[] getTextCharacters() { + if (state == TEXT_STATE) { + return values[arrayIndex].toCharArray(); + } else { + throw new IllegalStateException(); + } + } + + public int getTextCharacters(int i, char[] chars, int i1, int i2) throws XMLStreamException { + // not implemented + throw new UnsupportedOperationException(); + } + + public int getTextStart() { + if (state == TEXT_STATE) { + return 0; + } else { + throw new IllegalStateException(); + } + } + + public int getTextLength() { + if (state == TEXT_STATE) { + return values[arrayIndex].length(); + } else { + throw new IllegalStateException(); + } + + } + + public String getEncoding() { + return null; + } + + public boolean hasText() { + return state == TEXT_STATE; + } + + public Location getLocation() { + return null; // not supported + } + + public QName getName() { + if (state != TEXT_STATE) { + return name; + } else { + return null; + } + } + + public String getLocalName() { + if (state != TEXT_STATE) { + return name.getLocalPart(); + } else { + return null; + } + } + + public boolean hasName() { + return state != TEXT_STATE; + + } + + public String getNamespaceURI() { + if (state != TEXT_STATE) { + return name.getNamespaceURI(); + } else { + return null; + } + + } + + public String getPrefix() { + if (state != TEXT_STATE) { + return name.getPrefix(); + } else { + return null; + } + } + + public String getVersion() { + return null; // TODO 1.0 ? + } + + public boolean isStandalone() { + return false; + } + + public boolean standaloneSet() { + return false; + } + + public String getCharacterEncodingScheme() { + return null; + } + + public String getPITarget() { + return null; + } + + public String getPIData() { + return null; + } + + public boolean hasNext() throws XMLStreamException { + return state != FINAL_END_ELEMENT_STATE; + } + + public void close() throws XMLStreamException { + // Do nothing - we've nothing to free here + } + + public String getNamespaceURI(String prefix) { + return namespaceContext.getNamespaceURI(prefix); + } + + public boolean isStartElement() { + return state == START_ELEMENT_STATE; + } + + public boolean isEndElement() { + return state == END_ELEMENT_STATE; + } + + public boolean isCharacters() { + return state == TEXT_STATE; + } + + public boolean isWhiteSpace() { + return false; // no whitespaces here + } + + /** + * Test whether the xsi namespace is present + */ + private boolean isXsiNamespacePresent() { + return namespaceContext.getNamespaceURI(NIL_QNAME.getPrefix()) != null; + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NameValuePairStreamReader.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NameValuePairStreamReader.java new file mode 100644 index 0000000000..fdc3c4139b --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NameValuePairStreamReader.java @@ -0,0 +1,347 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.namespace.NamespaceContext; +import javax.xml.namespace.QName; +import javax.xml.stream.Location; +import javax.xml.stream.XMLStreamException; + + +public class NameValuePairStreamReader implements XMLFragmentStreamReader { + + private static final int START_ELEMENT_STATE = 0; + private static final int TEXT_STATE = 1; + private static final int END_ELEMENT_STATE = 2; + + private DelegatingNamespaceContext namespaceContext = new DelegatingNamespaceContext(); + + private QName name; + private String value; + + private int state = START_ELEMENT_STATE; + // initiate at the start element state + + // keeps track whether the namespace is declared + // false by default + private boolean nsDeclared; + + public NameValuePairStreamReader(QName name, String value) { + this.name = name; + this.value = value; + } + + public Object getProperty(String key) throws IllegalArgumentException { + return null; + } + + public int next() throws XMLStreamException { + // no need to handle null here. it should have been handled + // already + switch (state) { + case START_ELEMENT_STATE: + state = TEXT_STATE; + return CHARACTERS; + case END_ELEMENT_STATE: + // oops, not supposed to happen! + throw new XMLStreamException("end already reached!"); + case TEXT_STATE: + state = END_ELEMENT_STATE; + return END_ELEMENT; + default: + throw new XMLStreamException("unknown event type!"); + } + } + + public void require(int i, String string, String string1) throws XMLStreamException { + // not implemented + } + + public String getElementText() throws XMLStreamException { + if (state == START_ELEMENT) { + // move to the end state and return the value + state = END_ELEMENT_STATE; + return value; + } else { + throw new XMLStreamException(); + } + + } + + public int nextTag() throws XMLStreamException { + return 0; // TODO + } + + public boolean hasNext() throws XMLStreamException { + return state != END_ELEMENT_STATE; + } + + public void close() throws XMLStreamException { + // Do nothing - we've nothing to free here + } + + public String getNamespaceURI(String prefix) { + return namespaceContext.getNamespaceURI(prefix); + } + + public boolean isStartElement() { + return state == START_ELEMENT_STATE; + } + + public boolean isEndElement() { + return state == END_ELEMENT_STATE; + } + + public boolean isCharacters() { + return state == TEXT_STATE; + } + + public boolean isWhiteSpace() { + return false; // no whitespaces here + } + + public String getAttributeValue(String string, String string1) { + return null; + } + + public int getAttributeCount() { + return 0; + } + + public QName getAttributeName(int i) { + return null; + } + + public String getAttributeNamespace(int i) { + return null; + } + + public String getAttributeLocalName(int i) { + return null; + } + + public String getAttributePrefix(int i) { + return null; + } + + public String getAttributeType(int i) { + return null; + } + + public String getAttributeValue(int i) { + return null; + } + + public boolean isAttributeSpecified(int i) { + return false; // no attributes here + } + + public int getNamespaceCount() { + return nsDeclared ? 1 : 0; + } + + public String getNamespacePrefix(int i) { + return (nsDeclared && i == 0) ? name.getPrefix() : null; + } + + public String getNamespaceURI(int i) { + return (nsDeclared && i == 0) ? name.getNamespaceURI() : null; + } + + public NamespaceContext getNamespaceContext() { + return this.namespaceContext; + } + + public int getEventType() { + switch (state) { + case START_ELEMENT_STATE: + return START_ELEMENT; + case END_ELEMENT_STATE: + return END_ELEMENT; + case TEXT_STATE: + return CHARACTERS; + default: + throw new UnsupportedOperationException(); + // we've no idea what this is!!!!! + } + + } + + public String getText() { + if (state == TEXT_STATE) { + return value; + } else { + throw new IllegalStateException(); + } + } + + public char[] getTextCharacters() { + if (state == TEXT_STATE) { + return value.toCharArray(); + } else { + throw new IllegalStateException(); + } + } + + public int getTextCharacters(int i, char[] chars, int i1, int i2) throws XMLStreamException { + // not implemented + throw new UnsupportedOperationException(); + } + + public int getTextStart() { + if (state == TEXT_STATE) { + return 0; + } else { + throw new IllegalStateException(); + } + } + + public int getTextLength() { + if (state == TEXT_STATE) { + return value.length(); + } else { + throw new IllegalStateException(); + } + + } + + public String getEncoding() { + return null; + } + + public boolean hasText() { + return state == TEXT_STATE; + } + + public Location getLocation() { + return new Location() { + public int getLineNumber() { + return 0; + } + + public int getColumnNumber() { + return 0; + } + + public int getCharacterOffset() { + return 0; + } + + public String getPublicId() { + return null; + } + + public String getSystemId() { + return null; + } + }; + } + + public QName getName() { + if (state != TEXT_STATE) { + return name; + } else { + return null; + } + } + + public String getLocalName() { + if (state != TEXT_STATE) { + return name.getLocalPart(); + } else { + return null; + } + } + + public boolean hasName() { + return state != TEXT_STATE; + + } + + public String getNamespaceURI() { + if (state != TEXT_STATE) { + return name.getNamespaceURI(); + } else { + return null; + } + + } + + public String getPrefix() { + if (state != TEXT_STATE) { + return name.getPrefix(); + } else { + return null; + } + } + + public String getVersion() { + return null; // TODO 1.0 ? + } + + public boolean isStandalone() { + return false; + } + + public boolean standaloneSet() { + return false; + } + + public String getCharacterEncodingScheme() { + return null; + } + + public String getPITarget() { + return null; + } + + public String getPIData() { + return null; + } + + public boolean isDone() { + return state == END_ELEMENT_STATE; + } + + public void setParentNamespaceContext(NamespaceContext nsContext) { + this.namespaceContext.setParentNsContext(nsContext); + } + + public void init() { + // just add the current elements namespace and prefix to the this + // elements nscontext + addToNsMap(name.getPrefix(), name.getNamespaceURI()); + + } + + /** + * @param prefix + * @param uri + */ + private void addToNsMap(String prefix, String uri) { + // TODO - need to fix this up to cater for cases where + // namespaces are having no prefixes + if (!uri.equals(namespaceContext.getNamespaceURI(prefix))) { + // this namespace is not there. Need to declare it + namespaceContext.pushNamespace(prefix, uri); + nsDeclared = true; + } + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NamedProperty.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NamedProperty.java new file mode 100644 index 0000000000..04d7d65a0d --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NamedProperty.java @@ -0,0 +1,59 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + +import java.util.Map; + +import javax.xml.namespace.QName; + +/** + * A named property + * + * @version $Rev$ $Date$ + */ +public class NamedProperty implements Map.Entry { + private QName key; + + private Object value; + + public NamedProperty(QName key, Object value) { + this.key = key; + this.value = value; + } + + public NamedProperty(String key, Object value) { + this.key = new QName(key); + this.value = value; + } + + public QName getKey() { + return key; + } + + public Object getValue() { + return value; + } + + public Object setValue(Object value) { + Object v = this.value; + this.value = value; + return v; + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NilElementStreamReader.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NilElementStreamReader.java new file mode 100644 index 0000000000..abc4bf3785 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/NilElementStreamReader.java @@ -0,0 +1,279 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.namespace.NamespaceContext; +import javax.xml.namespace.QName; +import javax.xml.stream.Location; +import javax.xml.stream.XMLStreamException; + +public class NilElementStreamReader implements XMLFragmentStreamReader { + + private static final int END_ELEMENT_STATE = 2; + + private static final int START_ELEMENT_STATE = 1; + private int currentState = START_ELEMENT; + + private QName elementQName; + + public NilElementStreamReader(QName elementQName) { + this.elementQName = elementQName; + } + + public void setParentNamespaceContext(NamespaceContext nsContext) { + // NOOP + } + + public void close() throws XMLStreamException { + // do nothing + } + + public int getAttributeCount() { + return 1; + } + + public String getAttributeLocalName(int i) { + return (i == 0) ? NIL_QNAME.getLocalPart() : null; + } + + public QName getAttributeName(int i) { + return (i == 0) ? NIL_QNAME : null; + } + + public String getAttributeNamespace(int i) { + return (i == 0) ? NIL_QNAME.getNamespaceURI() : null; + } + + public String getAttributePrefix(int i) { + return (i == 0) ? NIL_QNAME.getPrefix() : null; + } + + public String getAttributeType(int i) { + throw new UnsupportedOperationException(); + } + + public String getAttributeValue(int i) { + return (i == 0) ? NIL_VALUE_TRUE : null; + } + + public String getAttributeValue(String string, String string1) { + if (string == null && NIL_QNAME.getLocalPart().equals(string1)) { + return NIL_VALUE_TRUE; + } + return null; + } + + public String getCharacterEncodingScheme() { + throw new UnsupportedOperationException(); + } + + public String getElementText() throws XMLStreamException { + return null; + } + + public String getEncoding() { + return null; + } + + public int getEventType() { + int returnEvent = START_DOCUMENT; + switch (currentState) { + case START_ELEMENT_STATE: + returnEvent = START_ELEMENT; + break; + case END_ELEMENT_STATE: + returnEvent = END_ELEMENT; + break; + } + return returnEvent; + } + + public String getLocalName() { + return elementQName.getLocalPart(); + } + + public Location getLocation() { + return new Location() { + public int getCharacterOffset() { + return 0; + } + + public int getColumnNumber() { + return 0; + } + + public int getLineNumber() { + return 0; + } + + public String getPublicId() { + return null; + } + + public String getSystemId() { + return null; + } + }; + } + + public QName getName() { + return elementQName; + } + + public NamespaceContext getNamespaceContext() { + throw new UnsupportedOperationException(); + } + + public int getNamespaceCount() { + return 0; + } + + public String getNamespacePrefix(int i) { + return null; + } + + public String getNamespaceURI() { + return elementQName.getNamespaceURI(); + } + + public String getNamespaceURI(int i) { + return null; + } + + public String getNamespaceURI(String string) { + if (elementQName.getPrefix() != null && elementQName.getPrefix().equals(string)) { + return elementQName.getNamespaceURI(); + } else { + return null; + } + } + + public String getPIData() { + throw new UnsupportedOperationException(); + } + + public String getPITarget() { + throw new UnsupportedOperationException(); + } + + public String getPrefix() { + return elementQName.getPrefix(); + } + + public Object getProperty(String key) throws IllegalArgumentException { + // since optimization is a global property + // we've to implement it everywhere + return null; + } + + public String getText() { + return null; + } + + public char[] getTextCharacters() { + return new char[0]; + } + + public int getTextCharacters(int i, char[] chars, int i1, int i2) throws XMLStreamException { + return 0; + } + + public int getTextLength() { + return 0; + } + + public int getTextStart() { + return 0; + } + + public String getVersion() { + throw new UnsupportedOperationException(); + } + + public boolean hasName() { + return true; + } + + public boolean hasNext() throws XMLStreamException { + return currentState != END_ELEMENT_STATE; + + } + + public boolean hasText() { + return false; + } + + public void init() { + // NOOP + } + + public boolean isAttributeSpecified(int i) { + return i == 0; + } + + public boolean isCharacters() { + return false; + } + + public boolean isDone() { + return currentState == END_ELEMENT_STATE; + } + + public boolean isEndElement() { + return currentState == END_ELEMENT_STATE; + } + + public boolean isStandalone() { + throw new UnsupportedOperationException(); + } + + public boolean isStartElement() { + return currentState == START_ELEMENT_STATE; + } + + public boolean isWhiteSpace() { + return false; + } + + public int next() throws XMLStreamException { + int returnEvent = START_DOCUMENT; + switch (currentState) { + case START_ELEMENT_STATE: + currentState = END_ELEMENT_STATE; + returnEvent = END_ELEMENT; + break; + case END_ELEMENT_STATE: + throw new XMLStreamException("parser completed!"); + + } + return returnEvent; + } + + public int nextTag() throws XMLStreamException { + throw new UnsupportedOperationException(); + } + + public void require(int i, String string, String string1) throws XMLStreamException { + // nothing + } + + public boolean standaloneSet() { + throw new UnsupportedOperationException(); + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2OutputStream.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2OutputStream.java new file mode 100644 index 0000000000..5500d0bcca --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2OutputStream.java @@ -0,0 +1,68 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.OutputStream; + +import javax.xml.transform.Result; +import javax.xml.transform.Source; +import javax.xml.transform.dom.DOMSource; +import javax.xml.transform.stream.StreamResult; + +import org.apache.tuscany.sca.databinding.PushTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.w3c.dom.Node; + +/** + * Push DOM Node to OutputStream + * + * @version $Rev$ $Date$ + */ +public class Node2OutputStream extends BaseTransformer implements + PushTransformer { + private static final Source2ResultTransformer TRANSFORMER = new Source2ResultTransformer(); + + public void transform(Node source, OutputStream writer, TransformationContext context) { + try { + Source domSource = new DOMSource(source); + Result result = new StreamResult(writer); + TRANSFORMER.transform(domSource, result, context); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return Node.class; + } + + @Override + protected Class getTargetType() { + return OutputStream.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2SimpleJavaType.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2SimpleJavaType.java new file mode 100644 index 0000000000..d5bf7e76b5 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2SimpleJavaType.java @@ -0,0 +1,45 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import org.apache.tuscany.sca.databinding.impl.SimpleType2JavaTransformer; +import org.w3c.dom.Document; +import org.w3c.dom.Node; + +/** + * Transformer to convert data from a simple java Object to OMElement. + * + * @version $Rev$ $Date$ + */ +public class Node2SimpleJavaType extends SimpleType2JavaTransformer { + + @Override + protected String getText(Node source) { + if (source instanceof Document) { + source = ((Document)source).getDocumentElement(); + } + return source.getTextContent(); + + } + + @Override + public Class getSourceType() { + return Node.class; + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2SourceTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2SourceTransformer.java new file mode 100644 index 0000000000..3c9022bc3c --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2SourceTransformer.java @@ -0,0 +1,61 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.transform.Source; +import javax.xml.transform.dom.DOMSource; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.w3c.dom.Node; + +/** + * Transform TrAX Node to Source + * + * @version $Rev$ $Date$ + */ +public class Node2SourceTransformer extends BaseTransformer implements + PullTransformer { + + public Source transform(Node source, TransformationContext context) { + try { + return new DOMSource(source); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return Node.class; + } + + @Override + protected Class getTargetType() { + return Source.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2String.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2String.java new file mode 100644 index 0000000000..1b54b1fd1e --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2String.java @@ -0,0 +1,62 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.StringWriter; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.w3c.dom.Node; + +/** + * Transform DOM Node to XML String + * + * @version $Rev$ $Date$ + */ +public class Node2String extends BaseTransformer implements PullTransformer { + private static final Node2Writer TRANSFORMER = new Node2Writer(); + + public String transform(Node source, TransformationContext context) { + try { + StringWriter writer = new StringWriter(); + TRANSFORMER.transform(source, writer, context); + return writer.toString(); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + public Class getSourceType() { + return Node.class; + } + + @Override + public Class getTargetType() { + return String.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2Writer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2Writer.java new file mode 100644 index 0000000000..c9631595dc --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2Writer.java @@ -0,0 +1,67 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.Writer; + +import javax.xml.transform.Result; +import javax.xml.transform.Source; +import javax.xml.transform.dom.DOMSource; +import javax.xml.transform.stream.StreamResult; + +import org.apache.tuscany.sca.databinding.PushTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.w3c.dom.Node; + +/** + * Push DOM Node to Writer + * + * @version $Rev$ $Date$ + */ +public class Node2Writer extends BaseTransformer implements PushTransformer { + private static final Source2ResultTransformer TRANSFORMER = new Source2ResultTransformer(); + + public void transform(Node source, Writer writer, TransformationContext context) { + try { + Source domSource = new DOMSource(source); + Result result = new StreamResult(writer); + TRANSFORMER.transform(domSource, result, context); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return Node.class; + } + + @Override + protected Class getTargetType() { + return Writer.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2XMLStreamReader.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2XMLStreamReader.java new file mode 100644 index 0000000000..1e8d14a151 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Node2XMLStreamReader.java @@ -0,0 +1,64 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.stream.XMLStreamReader; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.w3c.dom.Node; + +/** + * Transform DOM Node to XML XMLStreamReader + * + * @version $Rev$ $Date$ + */ +public class Node2XMLStreamReader extends BaseTransformer implements + PullTransformer { + + public XMLStreamReader transform(Node source, TransformationContext context) { + if (source == null) { + return null; + } + try { + DOMXMLStreamReader reader = new DOMXMLStreamReader(source); + return reader; + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return Node.class; + } + + @Override + protected Class getTargetType() { + return XMLStreamReader.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Reader2Node.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Reader2Node.java new file mode 100644 index 0000000000..70387fa862 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Reader2Node.java @@ -0,0 +1,67 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.Reader; + +import javax.xml.transform.Source; +import javax.xml.transform.dom.DOMResult; +import javax.xml.transform.stream.StreamSource; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.w3c.dom.Node; + +/** + * Push DOM Reader to Node + * + * @version $Rev$ $Date$ + */ +public class Reader2Node extends BaseTransformer implements PullTransformer { + private static final Source2ResultTransformer TRANSFORMER = new Source2ResultTransformer(); + + public Node transform(Reader source, TransformationContext context) { + try { + Source streamSource = new StreamSource(source); + DOMResult result = new DOMResult(); + TRANSFORMER.transform(streamSource, result, context); + return result.getNode(); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return Reader.class; + } + + @Override + protected Class getTargetType() { + return Node.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Reader2SAX.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Reader2SAX.java new file mode 100644 index 0000000000..188ecaffa3 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Reader2SAX.java @@ -0,0 +1,60 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.Reader; + +import org.apache.tuscany.sca.databinding.PushTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.xml.sax.ContentHandler; +import org.xml.sax.InputSource; + +/** + * Transform XML string to SAX + * + * @version $Rev$ $Date$ + */ +public class Reader2SAX extends BaseTransformer implements + PushTransformer { + public void transform(Reader source, ContentHandler target, TransformationContext context) { + try { + new InputSource2SAX().transform(new InputSource(source), target, context); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return Reader.class; + } + + @Override + protected Class getTargetType() { + return ContentHandler.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SAX2DOM.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SAX2DOM.java new file mode 100644 index 0000000000..02d871959d --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SAX2DOM.java @@ -0,0 +1,249 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + +import java.util.ArrayList; +import java.util.List; +import java.util.Stack; + +import javax.xml.parsers.ParserConfigurationException; + +import org.apache.tuscany.sca.databinding.impl.DOMHelper; +import org.w3c.dom.Comment; +import org.w3c.dom.Document; +import org.w3c.dom.Element; +import org.w3c.dom.Node; +import org.w3c.dom.ProcessingInstruction; +import org.w3c.dom.Text; +import org.xml.sax.Attributes; +import org.xml.sax.ContentHandler; +import org.xml.sax.Locator; +import org.xml.sax.SAXException; +import org.xml.sax.ext.LexicalHandler; + +/** + * SAX2DOM adapter + * + * @version $Rev$ $Date$ + */ +public class SAX2DOM implements ContentHandler, LexicalHandler { + public static final String EMPTYSTRING = ""; + public static final String XML_PREFIX = "xml"; + public static final String XMLNS_PREFIX = "xmlns"; + public static final String XMLNS_STRING = "xmlns:"; + public static final String XMLNS_URI = "http://www.w3.org/2000/xmlns/"; + + private Node root; + + private Document document; + + private Node nextSibling; + + private Stack nodeStk = new Stack(); + + private List namespaceDecls; + + private Node lastSibling; + + public SAX2DOM() throws ParserConfigurationException { + this.document = DOMHelper.newDocument(); + this.root = document; + } + + public SAX2DOM(Node root, Node nextSibling) throws ParserConfigurationException { + this.root = root; + if (root instanceof Document) { + this.document = (Document)root; + } else if (root != null) { + this.document = root.getOwnerDocument(); + } else { + this.document = DOMHelper.newDocument(); + this.root = document; + } + + this.nextSibling = nextSibling; + } + + public SAX2DOM(Node root) throws ParserConfigurationException { + this(root, null); + } + + public Node getDOM() { + return root; + } + + public void characters(char[] ch, int start, int length) { + final Node last = nodeStk.peek(); + + // No text nodes can be children of root (DOM006 exception) + if (last != document) { + final String text = new String(ch, start, length); + if (lastSibling != null && lastSibling.getNodeType() == Node.TEXT_NODE) { + ((Text)lastSibling).appendData(text); + } else if (last == root && nextSibling != null) { + lastSibling = last.insertBefore(document.createTextNode(text), nextSibling); + } else { + lastSibling = last.appendChild(document.createTextNode(text)); + } + + } + } + + public void startDocument() { + nodeStk.push(root); + } + + public void endDocument() { + nodeStk.pop(); + } + + public void startElement(String namespace, String localName, String qName, Attributes attrs) { + final Element tmp = document.createElementNS(namespace, qName); + + // Add namespace declarations first + if (namespaceDecls != null) { + final int nDecls = namespaceDecls.size(); + for (int i = 0; i < nDecls; i++) { + final String prefix = namespaceDecls.get(i++); + + if (prefix == null || prefix.equals(EMPTYSTRING)) { + tmp.setAttributeNS(XMLNS_URI, XMLNS_PREFIX, namespaceDecls.get(i)); + } else { + tmp.setAttributeNS(XMLNS_URI, XMLNS_STRING + prefix, namespaceDecls.get(i)); + } + } + namespaceDecls.clear(); + } + + // Add attributes to element + final int nattrs = attrs.getLength(); + for (int i = 0; i < nattrs; i++) { + if (attrs.getLocalName(i) == null) { + tmp.setAttribute(attrs.getQName(i), attrs.getValue(i)); + } else { + tmp.setAttributeNS(attrs.getURI(i), attrs.getQName(i), attrs.getValue(i)); + } + } + + // Append this new node onto current stack node + Node last = nodeStk.peek(); + + // If the SAX2DOM is created with a non-null next sibling node, + // insert the result nodes before the next sibling under the root. + if (last == root && nextSibling != null) { + last.insertBefore(tmp, nextSibling); + } else { + last.appendChild(tmp); + } + + // Push this node onto stack + nodeStk.push(tmp); + lastSibling = null; + } + + public void endElement(String namespace, String localName, String qName) { + nodeStk.pop(); + lastSibling = null; + } + + public void startPrefixMapping(String prefix, String uri) { + if (namespaceDecls == null) { + namespaceDecls = new ArrayList(2); + } + namespaceDecls.add(prefix); + namespaceDecls.add(uri); + } + + public void endPrefixMapping(String prefix) { + // do nothing + } + + /** + * This class is only used internally so this method should never be called. + */ + public void ignorableWhitespace(char[] ch, int start, int length) { + } + + /** + * adds processing instruction node to DOM. + */ + public void processingInstruction(String target, String data) { + final Node last = nodeStk.peek(); + ProcessingInstruction pi = document.createProcessingInstruction(target, data); + if (pi != null) { + if (last == root && nextSibling != null) { + last.insertBefore(pi, nextSibling); + } else { + last.appendChild(pi); + } + + lastSibling = pi; + } + } + + /** + * This class is only used internally so this method should never be called. + */ + public void setDocumentLocator(Locator locator) { + } + + /** + * This class is only used internally so this method should never be called. + */ + public void skippedEntity(String name) { + } + + /** + * Lexical Handler method to create comment node in DOM tree. + */ + public void comment(char[] ch, int start, int length) { + final Node last = nodeStk.peek(); + Comment comment = document.createComment(new String(ch, start, length)); + if (comment != null) { + if (last == root && nextSibling != null) { + last.insertBefore(comment, nextSibling); + } else { + last.appendChild(comment); + } + + lastSibling = comment; + } + } + + // Lexical Handler methods- not implemented + public void startCDATA() { + } + + public void endCDATA() { + } + + public void startEntity(java.lang.String name) { + } + + public void endDTD() { + } + + public void endEntity(String name) { + } + + public void startDTD(String name, String publicId, String systemId) throws SAXException { + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SAX2DOMPipe.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SAX2DOMPipe.java new file mode 100644 index 0000000000..cb9d538389 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SAX2DOMPipe.java @@ -0,0 +1,81 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.parsers.ParserConfigurationException; + +import org.apache.tuscany.sca.databinding.DataPipe; +import org.apache.tuscany.sca.databinding.DataPipeTransformer; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.w3c.dom.Node; +import org.xml.sax.ContentHandler; + +public class SAX2DOMPipe extends BaseTransformer implements DataPipeTransformer { + + /** + * + */ + public SAX2DOMPipe() { + super(); + } + + /** + * @see org.apache.tuscany.sca.databinding.DataPipeTransformer#newInstance() + */ + public DataPipe newInstance() { + return new Pipe(); + } + + @Override + protected Class getTargetType() { + return Node.class; + } + + @Override + protected Class getSourceType() { + return ContentHandler.class; + } + + @Override + public int getWeight() { + return 30; + } + + private static class Pipe implements DataPipe { + private SAX2DOM pipe; + + public Pipe() { + super(); + try { + this.pipe = new SAX2DOM(); + } catch (ParserConfigurationException e) { + throw new IllegalArgumentException(e); + } + } + + public Node getResult() { + return pipe.getDOM(); + } + + public ContentHandler getSink() { + return pipe; + } + + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SimpleJavaType2Node.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SimpleJavaType2Node.java new file mode 100644 index 0000000000..d2625fba11 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SimpleJavaType2Node.java @@ -0,0 +1,71 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.namespace.QName; +import javax.xml.parsers.ParserConfigurationException; + +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.impl.DOMHelper; +import org.apache.tuscany.sca.databinding.impl.Java2SimpleTypeTransformer; +import org.apache.tuscany.sca.databinding.javabeans.Java2XMLMapperException; +import org.w3c.dom.Attr; +import org.w3c.dom.Document; +import org.w3c.dom.Node; + +/** + * Transformer to convert data from an simple OMElement to Java Object + * + * @version $Rev$ $Date$ + */ +public class SimpleJavaType2Node extends Java2SimpleTypeTransformer { + + private Document factory; + + public SimpleJavaType2Node() { + super(); + try { + factory = DOMHelper.newDocument(); + } catch (ParserConfigurationException e) { + throw new Java2XMLMapperException(e); + } + } + + @Override + protected Node createElement(QName element, String text, TransformationContext context) { + if (element == null) { + element = DOMDataBinding.ROOT_ELEMENT; + } + Node root = DOMHelper.createElement(factory, element); + if (text != null) { + root.appendChild(factory.createTextNode(text)); + } else { + Attr nil = factory.createAttributeNS("http://www.w3.org/2001/XMLSchema-instance", "xsi:nil"); + nil.setValue("true"); + root.appendChild(nil); + } + return root; + } + + @Override + public Class getTargetType() { + return Node.class; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SimpleXmlNodeImpl.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SimpleXmlNodeImpl.java new file mode 100644 index 0000000000..e041f85214 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/SimpleXmlNodeImpl.java @@ -0,0 +1,112 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + +import java.util.Arrays; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; + +import javax.xml.namespace.QName; + +/** + * @version $Rev$ $Date$ + */ +public class SimpleXmlNodeImpl implements XmlNode { + private static final String XSI_PREFIX = "xsi"; + private static final String XSI_NS = "http://www.w3.org/2001/XMLSchema-instance"; + private static final QName XSI_NIL = new QName(XSI_NS, "nil", XSI_PREFIX); + private static final Map NS_MAP = new HashMap(); + static { + NS_MAP.put(XSI_PREFIX, XSI_NS); + } + + protected Type type; + protected QName name; + protected Object value; + + public SimpleXmlNodeImpl(QName name, Object value) { + this(name, value, name != null ? Type.ELEMENT : Type.CHARACTERS); + } + + public SimpleXmlNodeImpl(QName name, Object value, Type type) { + super(); + this.type = type; + this.name = name; + this.value = value; + } + + /** + * @see org.apache.tuscany.sca.databinding.xml.XmlNode#attributes() + */ + public List attributes() { + if (type == Type.ELEMENT && value == null) { + // Nil element + XmlNode attr = new SimpleXmlNodeImpl(XSI_NIL, "true"); + return Arrays.asList(attr); + } + return null; + } + + /** + * @see org.apache.tuscany.sca.databinding.xml.XmlNode#children() + */ + public Iterator children() { + if (type == Type.ELEMENT && value != null) { + // Nil element + XmlNode node = new SimpleXmlNodeImpl(null, value); + return Arrays.asList(node).iterator(); + } + return null; + } + + /** + * @see org.apache.tuscany.sca.databinding.xml.XmlNode#getName() + */ + public QName getName() { + return name; + } + + /** + * @see org.apache.tuscany.sca.databinding.xml.XmlNode#getValue() + */ + public String getValue() { + return value == null ? null : String.valueOf(value); + } + + /** + * @see org.apache.tuscany.sca.databinding.xml.XmlNode#namespaces() + */ + public Map namespaces() { + if (type == Type.ELEMENT && value == null) { + return NS_MAP; + } + return null; + } + + public Type getType() { + return type; + } + + public void setType(Type type) { + this.type = type; + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Source2NodeTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Source2NodeTransformer.java new file mode 100644 index 0000000000..ee9aa1bb76 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Source2NodeTransformer.java @@ -0,0 +1,69 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.transform.Source; +import javax.xml.transform.TransformerFactory; +import javax.xml.transform.dom.DOMResult; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.apache.tuscany.sca.databinding.impl.DOMHelper; +import org.w3c.dom.Document; +import org.w3c.dom.Node; + +/** + * Transform TrAX Source to Node + * + * @version $Rev$ $Date$ + */ +public class Source2NodeTransformer extends BaseTransformer implements + PullTransformer { + private static final TransformerFactory FACTORY = TransformerFactory.newInstance(); + + public Node transform(Source source, TransformationContext context) { + try { + javax.xml.transform.Transformer transformer = FACTORY.newTransformer(); + DOMResult result = new DOMResult(); + transformer.transform(source, result); + Document doc = (Document) result.getNode(); + return DOMHelper.adjustElementName(context, doc.getDocumentElement()); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return Source.class; + } + + @Override + protected Class getTargetType() { + return Node.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Source2ResultTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Source2ResultTransformer.java new file mode 100644 index 0000000000..8a2b6b39aa --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Source2ResultTransformer.java @@ -0,0 +1,63 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.transform.Result; +import javax.xml.transform.Source; +import javax.xml.transform.TransformerFactory; + +import org.apache.tuscany.sca.databinding.PushTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; + +/** + * Transform TrAX Source to Result + * + * @version $Rev$ $Date$ + */ +public class Source2ResultTransformer extends BaseTransformer implements + PushTransformer { + private static final TransformerFactory FACTORY = TransformerFactory.newInstance(); + + public void transform(Source source, Result result, TransformationContext context) { + try { + javax.xml.transform.Transformer transformer = FACTORY.newTransformer(); + transformer.transform(source, result); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return Source.class; + } + + @Override + protected Class getTargetType() { + return Result.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Source2StringTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Source2StringTransformer.java new file mode 100644 index 0000000000..2ed548ad76 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Source2StringTransformer.java @@ -0,0 +1,68 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.StringWriter; + +import javax.xml.transform.Source; +import javax.xml.transform.TransformerFactory; +import javax.xml.transform.stream.StreamResult; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; + +/** + * Transform TrAX Source to String + * + * @version $Rev$ $Date$ + */ +public class Source2StringTransformer extends BaseTransformer implements + PullTransformer { + private static final TransformerFactory FACTORY = TransformerFactory.newInstance(); + + public String transform(Source source, TransformationContext context) { + try { + javax.xml.transform.Transformer transformer = FACTORY.newTransformer(); + StringWriter sw = new StringWriter(); + StreamResult result = new StreamResult(sw); + transformer.transform(source, result); + return sw.toString(); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return Source.class; + } + + @Override + protected Class getTargetType() { + return String.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StAX2SAXAdapter.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StAX2SAXAdapter.java new file mode 100644 index 0000000000..6257681091 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StAX2SAXAdapter.java @@ -0,0 +1,256 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.namespace.QName; +import javax.xml.stream.Location; +import javax.xml.stream.XMLStreamConstants; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; + +import org.xml.sax.Attributes; +import org.xml.sax.ContentHandler; +import org.xml.sax.Locator; +import org.xml.sax.SAXException; +import org.xml.sax.helpers.AttributesImpl; + +/** + * Adapter that converts from StAX to SAX event streams. Currently the following + * SAX events are not generated: + *

    + *
  • ignorableWhitespace
    • + *
  • skippedEntity
    • + *
      + * Also the following StAX events are not mapped: + *
        + *
      • CDATA
        • + *
      • COMMENT
        • + *
      • DTD
        • + *
      • ENTITY_DECLARATION
        • + *
      • ENTITY_REFERENCE
        • + *
      • NOTATION_DECLARATION
        • + *
      • SPACE
        • + *
      + * StAX ATTRIBUTE events are ignored but the equivalent attributes (derived from + * the START_ELEMENT event) are supplied in the SAX startElement event's + * Attributes parameter. If the adaptor is configured to pass namespace prefixes + * then namespace information will also be included in the Attributes; StAX + * NAMESPACE events are ignored.

      Another issue is namespace processing. If + * the reader is positioned at a sub-node, we cannot capture all the in-scope + * namespace bindings. Therefore we cannot re-create a proper SAX event stream + * from a StAX parser.

      For example

      <a:root xmlns:a="foo" + * xmlns:b="bar"><b:sub>a:foo</b:sub></a:root>

      And if + * you are handed a parser at <b:sub>, then your SAX events should look + * like:

      <b:sub xmlns:a="foo" xmlns:b="bar">a:foo</b:sub>

      + * not:

      <b:sub>a:foo</b:sub>

      Proposal: we change the + * receiver of SAX events (SDOXMLResourceImpl) so that it uses NamespaceContext + * to resolve prefix (as opposed to record start/endPrefixMappings and use it + * for resolution.) + * + * @version $Rev$ $Date$ + */ +public class StAX2SAXAdapter { + private final boolean namespacePrefixes; + + /** + * Construct a new StAX to SAX adapter that will convert a StAX event stream + * into a SAX event stream. + * + * @param namespacePrefixes whether xmlns attributes should be included in + * startElement events; + */ + public StAX2SAXAdapter(boolean namespacePrefixes) { + this.namespacePrefixes = namespacePrefixes; + } + + /** + * Pull events from the StAX stream and dispatch to the SAX ContentHandler. + * The StAX stream would typically be located on a START_DOCUMENT or + * START_ELEMENT event and when this method returns it will be located on + * the associated END_DOCUMENT or END_ELEMENT event. Behaviour with other + * start events is undefined. + * + * @param reader StAX event source to read + * @param handler SAX ContentHandler for processing events + * @throws XMLStreamException if there was a problem reading the stream + * @throws SAXException passed through from the ContentHandler + */ + public void parse(XMLStreamReader reader, ContentHandler handler) throws XMLStreamException, SAXException { + handler.setDocumentLocator(new LocatorAdaptor(reader.getLocation())); + + // remembers the nest level of elements to know when we are done + int level = 0; + int event = reader.getEventType(); + while (true) { + switch (event) { + case XMLStreamConstants.START_DOCUMENT: + level++; + handler.startDocument(); + break; + case XMLStreamConstants.START_ELEMENT: + level++; + handleStartElement(reader, handler); + break; + case XMLStreamConstants.PROCESSING_INSTRUCTION: + handler.processingInstruction(reader.getPITarget(), reader.getPIData()); + break; + case XMLStreamConstants.CHARACTERS: + handler.characters(reader.getTextCharacters(), reader.getTextStart(), reader + .getTextLength()); + break; + case XMLStreamConstants.END_ELEMENT: + handleEndElement(reader, handler); + level--; + if (level == 0) { + return; + } + break; + case XMLStreamConstants.END_DOCUMENT: + handler.endDocument(); + return; + /* + * uncomment to handle all events rather than just mapped + * ones // StAX events that are not mapped to SAX case + * XMLStreamConstants.COMMENT: case + * XMLStreamConstants.SPACE: case + * XMLStreamConstants.ENTITY_REFERENCE: case + * XMLStreamConstants.DTD: case XMLStreamConstants.CDATA: + * case XMLStreamConstants.NOTATION_DECLARATION: case + * XMLStreamConstants.ENTITY_DECLARATION: break; // StAX + * events handled in START_ELEMENT case + * XMLStreamConstants.ATTRIBUTE: case + * XMLStreamConstants.NAMESPACE: break; default: throw new + * AssertionError("Unknown StAX event: " + event); + */ + } + event = reader.next(); + } + } + + private void handleStartElement(XMLStreamReader reader, ContentHandler handler) throws SAXException { + // send startPrefixMapping events immediately before startElement event + int nsCount = reader.getNamespaceCount(); + for (int i = 0; i < nsCount; i++) { + String prefix = reader.getNamespacePrefix(i); + if (prefix == null) { // true for default namespace + prefix = ""; + } + handler.startPrefixMapping(prefix, reader.getNamespaceURI(i)); + } + + // fire startElement + QName qname = reader.getName(); + String prefix = qname.getPrefix(); + String rawname; + if (prefix == null || prefix.length() == 0) { + rawname = qname.getLocalPart(); + } else { + rawname = prefix + ':' + qname.getLocalPart(); + } + Attributes attrs = getAttributes(reader); + handler.startElement(qname.getNamespaceURI(), qname.getLocalPart(), rawname, attrs); + } + + private static void handleEndElement(XMLStreamReader reader, ContentHandler handler) throws SAXException { + // fire endElement + QName qname = reader.getName(); + handler.endElement(qname.getNamespaceURI(), qname.getLocalPart(), qname.toString()); + + // send endPrefixMapping events immediately after endElement event + // we send them in the opposite order to that returned but this is not + // actually required by SAX + int nsCount = reader.getNamespaceCount(); + for (int i = nsCount - 1; i >= 0; i--) { + String prefix = reader.getNamespacePrefix(i); + if (prefix == null) { // true for default namespace + prefix = ""; + } + handler.endPrefixMapping(prefix); + } + } + + /** + * Get the attributes associated with the current START_ELEMENT event. + * + * @return the StAX attributes converted to org.xml.sax.Attributes + */ + private Attributes getAttributes(XMLStreamReader reader) { + assert reader.getEventType() == XMLStreamConstants.START_ELEMENT; + + AttributesImpl attrs = new AttributesImpl(); + + // add namespace declarations if required + if (namespacePrefixes) { + for (int i = 0; i < reader.getNamespaceCount(); i++) { + String prefix = reader.getNamespacePrefix(i); + String uri = reader.getNamespaceURI(i); + attrs.addAttribute(null, prefix, "xmlns:" + prefix, "CDATA", uri); + } + } + + // Regular attributes + for (int i = 0; i < reader.getAttributeCount(); i++) { + String uri = reader.getAttributeNamespace(i); + if (uri == null) { + uri = ""; + } + String localName = reader.getAttributeLocalName(i); + String prefix = reader.getAttributePrefix(i); + String qname; + if (prefix == null || prefix.length() == 0) { + qname = localName; + } else { + qname = prefix + ':' + localName; + } + String type = reader.getAttributeType(i); + String value = reader.getAttributeValue(i); + + attrs.addAttribute(uri, localName, qname, type, value); + } + + return attrs; + } + + /** + * Adaptor for mapping Locator information. + */ + private static final class LocatorAdaptor implements Locator { + private final Location location; + + private LocatorAdaptor(Location location) { + this.location = location; + } + + public int getColumnNumber() { + return location == null ? 0 : location.getColumnNumber(); + } + + public int getLineNumber() { + return location == null ? 0 : location.getLineNumber(); + } + + public String getPublicId() { + return location == null ? "" : location.getPublicId(); + } + + public String getSystemId() { + return location == null ? "" : location.getSystemId(); + } + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StAXDataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StAXDataBinding.java new file mode 100644 index 0000000000..ed57992910 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StAXDataBinding.java @@ -0,0 +1,53 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + + +import javax.xml.stream.XMLStreamReader; + +import org.apache.tuscany.sca.databinding.impl.BaseDataBinding; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * A DataBinding for the StAX + * + * @version $Rev$ $Date$ + */ +public class StAXDataBinding extends BaseDataBinding { + public static final String NAME = XMLStreamReader.class.getName(); + + public StAXDataBinding() { + super(NAME, XMLStreamReader.class); + } + + @Override + public boolean introspect(DataType type, Operation operation) { + if (super.introspect(type, operation)) { + type.setLogical(XMLType.UNKNOWN); + type.setDataBinding(NAME); + return true; + } else { + return false; + } + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StAXHelper.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StAXHelper.java new file mode 100644 index 0000000000..103ecbd7d1 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StAXHelper.java @@ -0,0 +1,86 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.InputStream; +import java.io.OutputStream; +import java.io.Reader; +import java.io.StringReader; +import java.io.StringWriter; +import java.io.Writer; + +import javax.xml.stream.XMLInputFactory; +import javax.xml.stream.XMLOutputFactory; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; +import javax.xml.transform.Source; + + +public final class StAXHelper { + private static final XMLInputFactory INPUT_FACTORY = XMLInputFactory.newInstance(); + private static final XMLOutputFactory OUTPUT_FACTORY = XMLOutputFactory.newInstance(); + + private StAXHelper() { + } + + public static XMLStreamReader createXMLStreamReader(InputStream inputStream) throws XMLStreamException { + return INPUT_FACTORY.createXMLStreamReader(inputStream); + } + + public static XMLStreamReader createXMLStreamReader(Reader reader) throws XMLStreamException { + return INPUT_FACTORY.createXMLStreamReader(reader); + } + + public static XMLStreamReader createXMLStreamReader(Source source) throws XMLStreamException { + return INPUT_FACTORY.createXMLStreamReader(source); + } + + public static XMLStreamReader createXMLStreamReader(String string) throws XMLStreamException { + StringReader reader = new StringReader(string); + return createXMLStreamReader(reader); + } + + public static String save(XMLStreamReader reader) throws XMLStreamException { + StringWriter writer = new StringWriter(); + save(reader, writer); + return writer.toString(); + } + + public static void save(XMLStreamReader reader, OutputStream outputStream) throws XMLStreamException { + XMLStreamSerializer serializer = new XMLStreamSerializer(); + XMLStreamWriter streamWriter = OUTPUT_FACTORY.createXMLStreamWriter(outputStream); + serializer.serialize(reader, streamWriter); + streamWriter.flush(); + } + + public static void save(XMLStreamReader reader, Writer writer) throws XMLStreamException { + XMLStreamSerializer serializer = new XMLStreamSerializer(); + XMLStreamWriter streamWriter = OUTPUT_FACTORY.createXMLStreamWriter(writer); + serializer.serialize(reader, streamWriter); + streamWriter.flush(); + } + + public static void save(XMLStreamReader reader, XMLStreamWriter writer) throws XMLStreamException { + XMLStreamSerializer serializer = new XMLStreamSerializer(); + serializer.serialize(reader, writer); + writer.flush(); + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StreamDataPipe.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StreamDataPipe.java new file mode 100644 index 0000000000..f8967e35b6 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/StreamDataPipe.java @@ -0,0 +1,65 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.InputStream; +import java.io.OutputStream; + +import org.apache.tuscany.sca.databinding.DataPipe; +import org.apache.tuscany.sca.databinding.DataPipeTransformer; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; + +public class StreamDataPipe extends BaseTransformer implements + DataPipeTransformer { + + public DataPipe newInstance() { + return new Pipe(); + } + + @Override + protected Class getTargetType() { + return InputStream.class; + } + + @Override + public int getWeight() { + return 50; + } + + @Override + protected Class getSourceType() { + return OutputStream.class; + } + + public static class Pipe implements DataPipe { + private ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); + + public InputStream getResult() { + return new ByteArrayInputStream(outputStream.toByteArray()); + } + + public OutputStream getSink() { + return outputStream; + } + + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2Node.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2Node.java new file mode 100644 index 0000000000..062e10cc45 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2Node.java @@ -0,0 +1,60 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.StringReader; + +import javax.xml.parsers.DocumentBuilder; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.apache.tuscany.sca.databinding.impl.DOMHelper; +import org.w3c.dom.Node; +import org.xml.sax.InputSource; + +public class String2Node extends BaseTransformer implements PullTransformer { + + public Node transform(String source, TransformationContext context) { + try { + DocumentBuilder builder = DOMHelper.newDocumentBuilder(); + InputSource inputSource = new InputSource(new StringReader(source)); + return builder.parse(inputSource); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return String.class; + } + + @Override + protected Class getTargetType() { + return Node.class; + } + + @Override + public int getWeight() { + return 50; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2SAX.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2SAX.java new file mode 100644 index 0000000000..c56dba1843 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2SAX.java @@ -0,0 +1,61 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.StringReader; + +import org.apache.tuscany.sca.databinding.PushTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.xml.sax.ContentHandler; +import org.xml.sax.InputSource; + +/** + * Transform XML string to SAX + * + * @version $Rev$ $Date$ + */ +public class String2SAX extends BaseTransformer implements + PushTransformer { + + public void transform(String source, ContentHandler target, TransformationContext context) { + try { + new InputSource2SAX().transform(new InputSource(new StringReader(source)), target, context); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return String.class; + } + + @Override + protected Class getTargetType() { + return ContentHandler.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2SourceTransformer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2SourceTransformer.java new file mode 100644 index 0000000000..c2de202a9b --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2SourceTransformer.java @@ -0,0 +1,62 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.StringReader; + +import javax.xml.transform.Source; +import javax.xml.transform.stream.StreamSource; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; + +/** + * Transform XML String to Source + * + * @version $Rev$ $Date$ + */ +public class String2SourceTransformer extends BaseTransformer implements + PullTransformer { + + public Source transform(String source, TransformationContext context) { + try { + return new StreamSource(new StringReader(source)); + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return String.class; + } + + @Override + protected Class getTargetType() { + return Source.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2XMLStreamReader.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2XMLStreamReader.java new file mode 100644 index 0000000000..a7364006d0 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/String2XMLStreamReader.java @@ -0,0 +1,55 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; + +public class String2XMLStreamReader extends BaseTransformer implements + PullTransformer { + + public XMLStreamReader transform(String source, TransformationContext context) { + try { + return StAXHelper.createXMLStreamReader(source); + } catch (XMLStreamException e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return String.class; + } + + @Override + protected Class getTargetType() { + return XMLStreamReader.class; + } + + @Override + public int getWeight() { + return 50; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/WrappingXMLStreamReader.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/WrappingXMLStreamReader.java new file mode 100644 index 0000000000..d73e495798 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/WrappingXMLStreamReader.java @@ -0,0 +1,100 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.namespace.NamespaceContext; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.util.StreamReaderDelegate; + +public class WrappingXMLStreamReader extends StreamReaderDelegate implements XMLFragmentStreamReader { + + private boolean done; + private int level; + + public WrappingXMLStreamReader(XMLStreamReader realReader) throws XMLStreamException { + super(realReader); + if (realReader == null) { + throw new UnsupportedOperationException("Reader cannot be null"); + } + + if (realReader instanceof XMLFragmentStreamReader) { + ((XMLFragmentStreamReader)realReader).init(); + } + + if (realReader.getEventType() == START_DOCUMENT) { + // Position to the 1st element + realReader.nextTag(); + } + if (realReader.getEventType() != START_ELEMENT) { + throw new IllegalStateException("The reader is not positioned at START_DOCUMENT or START_ELEMENT"); + } + this.done = false; + this.level = 1; + } + + @Override + public boolean hasNext() throws XMLStreamException { + return !done && super.hasNext(); + } + + @Override + public int next() throws XMLStreamException { + if (!hasNext()) { + throw new IllegalStateException("No more events"); + } + int event = super.next(); + if (!super.hasNext()) { + done = true; + } + if (event == START_ELEMENT) { + level++; + } else if (event == END_ELEMENT) { + level--; + if (level == 0) { + done = true; + } + } + return event; + } + + @Override + public int nextTag() throws XMLStreamException { + int event = 0; + while (true) { + event = next(); + if (event == START_ELEMENT || event == END_ELEMENT) { + return event; + } + } + } + + public void setParentNamespaceContext(NamespaceContext nsContext) { + // nothing to do here + } + + public void init() { + // Nothing to do here + } + + public boolean isDone() { + return done; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Writer2ReaderDataPipe.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Writer2ReaderDataPipe.java new file mode 100644 index 0000000000..5ab7272d58 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/Writer2ReaderDataPipe.java @@ -0,0 +1,63 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.io.Reader; +import java.io.StringReader; +import java.io.StringWriter; +import java.io.Writer; + +import org.apache.tuscany.sca.databinding.DataPipe; +import org.apache.tuscany.sca.databinding.DataPipeTransformer; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; + +public class Writer2ReaderDataPipe extends BaseTransformer implements DataPipeTransformer { + + public DataPipe newInstance() { + return new Pipe(); + } + + @Override + protected Class getTargetType() { + return Reader.class; + } + + @Override + public int getWeight() { + return 50; + } + + @Override + protected Class getSourceType() { + return Writer.class; + } + + private static class Pipe implements DataPipe { + private StringWriter writer = new StringWriter(); + + public Reader getResult() { + return new StringReader(writer.toString()); + } + + public Writer getSink() { + return writer; + } + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLDocumentStreamReader.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLDocumentStreamReader.java new file mode 100644 index 0000000000..a7088eada3 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLDocumentStreamReader.java @@ -0,0 +1,482 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + +import java.util.NoSuchElementException; + +import javax.xml.namespace.NamespaceContext; +import javax.xml.namespace.QName; +import javax.xml.stream.Location; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; + +/** + * This class is derived from Apache Axis2 class + * org.apache.axis2.util.StreamWrapper. It's used wrap a XMLStreamReader to + * create a XMLStreamReader representing a document and it will produce + * START_DOCUMENT, END_DOCUMENT events. + * + * @version $Rev$ $Date$ + */ +public class XMLDocumentStreamReader implements XMLStreamReader { + private static final int STATE_COMPLETE_AT_NEXT = 2; // The wrapper + // will produce + // END_DOCUMENT + + private static final int STATE_COMPLETED = 3; // Done + + private static final int STATE_INIT = 0; // The wrapper will produce + // START_DOCUMENT + + private static final int STATE_SWITCHED = 1; // The real reader will + // produce events + + private XMLStreamReader realReader; + private boolean fragment; + private int level = 1; + + private int state = STATE_INIT; + + public XMLDocumentStreamReader(XMLStreamReader realReader) { + if (realReader == null) { + throw new UnsupportedOperationException("Reader cannot be null"); + } + + this.realReader = realReader; + + if (realReader instanceof XMLFragmentStreamReader) { + ((XMLFragmentStreamReader)realReader).init(); + } + + // If the real reader is positioned at START_DOCUMENT, always use + // the real reader + if (realReader.getEventType() == START_DOCUMENT) { + fragment = false; + state = STATE_SWITCHED; + } + } + + public void close() throws XMLStreamException { + realReader.close(); + } + + public int getAttributeCount() { + if (isDelegating()) { + return realReader.getAttributeCount(); + } else { + throw new IllegalStateException(); + } + } + + public String getAttributeLocalName(int i) { + if (isDelegating()) { + return realReader.getAttributeLocalName(i); + } else { + throw new IllegalStateException(); + } + } + + public QName getAttributeName(int i) { + if (isDelegating()) { + return realReader.getAttributeName(i); + } else { + throw new IllegalStateException(); + } + } + + public String getAttributeNamespace(int i) { + if (isDelegating()) { + return realReader.getAttributeNamespace(i); + } else { + throw new IllegalStateException(); + } + } + + public String getAttributePrefix(int i) { + if (isDelegating()) { + return realReader.getAttributePrefix(i); + } else { + throw new IllegalStateException(); + } + } + + public String getAttributeType(int i) { + if (isDelegating()) { + return realReader.getAttributeType(i); + } else { + throw new IllegalStateException(); + } + } + + public String getAttributeValue(int i) { + if (isDelegating()) { + return realReader.getAttributeValue(i); + } else { + throw new IllegalStateException(); + } + } + + public String getAttributeValue(String s, String s1) { + if (isDelegating()) { + return realReader.getAttributeValue(s, s1); + } else { + throw new IllegalStateException(); + } + } + + public String getCharacterEncodingScheme() { + return realReader.getCharacterEncodingScheme(); + } + + public String getElementText() throws XMLStreamException { + if (isDelegating()) { + return realReader.getElementText(); + } else { + throw new XMLStreamException(); + } + } + + public String getEncoding() { + return realReader.getEncoding(); + } + + public int getEventType() { + int event = -1; + switch (state) { + case STATE_SWITCHED: + case STATE_COMPLETE_AT_NEXT: + event = realReader.getEventType(); + break; + case STATE_INIT: + event = START_DOCUMENT; + break; + case STATE_COMPLETED: + event = END_DOCUMENT; + break; + } + return event; + } + + public String getLocalName() { + if (isDelegating()) { + return realReader.getLocalName(); + } else { + throw new IllegalStateException(); + } + } + + public Location getLocation() { + if (isDelegating()) { + return realReader.getLocation(); + } else { + return null; + } + } + + public QName getName() { + if (isDelegating()) { + return realReader.getName(); + } else { + throw new IllegalStateException(); + } + } + + public NamespaceContext getNamespaceContext() { + return realReader.getNamespaceContext(); + } + + public int getNamespaceCount() { + if (isDelegating()) { + return realReader.getNamespaceCount(); + } else { + throw new IllegalStateException(); + } + } + + public String getNamespacePrefix(int i) { + if (isDelegating()) { + return realReader.getNamespacePrefix(i); + } else { + throw new IllegalStateException(); + } + } + + public String getNamespaceURI() { + if (isDelegating()) { + return realReader.getNamespaceURI(); + } else { + throw new IllegalStateException(); + } + } + + public String getNamespaceURI(int i) { + if (isDelegating()) { + return realReader.getNamespaceURI(i); + } else { + throw new IllegalStateException(); + } + } + + public String getNamespaceURI(String s) { + if (isDelegating()) { + return realReader.getNamespaceURI(s); + } else { + throw new IllegalStateException(); + } + } + + public String getPIData() { + if (isDelegating()) { + return realReader.getPIData(); + } else { + throw new IllegalStateException(); + } + } + + public String getPITarget() { + if (isDelegating()) { + return realReader.getPITarget(); + } else { + throw new IllegalStateException(); + } + } + + public String getPrefix() { + if (isDelegating()) { + return realReader.getPrefix(); + } else { + throw new IllegalStateException(); + } + } + + public Object getProperty(String s) throws IllegalArgumentException { + if (isDelegating()) { + return realReader.getProperty(s); + } else { + throw new IllegalArgumentException(); + } + } + + public String getText() { + if (isDelegating()) { + return realReader.getText(); + } else { + throw new IllegalStateException(); + } + } + + public char[] getTextCharacters() { + if (isDelegating()) { + return realReader.getTextCharacters(); + } else { + throw new IllegalStateException(); + } + } + + public int getTextCharacters(int i, char[] chars, int i1, int i2) throws XMLStreamException { + if (isDelegating()) { + return realReader.getTextCharacters(i, chars, i1, i2); + } else { + throw new IllegalStateException(); + } + } + + public int getTextLength() { + if (isDelegating()) { + return realReader.getTextLength(); + } else { + throw new IllegalStateException(); + } + } + + public int getTextStart() { + if (isDelegating()) { + return realReader.getTextStart(); + } else { + throw new IllegalStateException(); + } + } + + public String getVersion() { + if (isDelegating()) { + return realReader.getVersion(); + } else { + return null; + } + } + + public boolean hasName() { + if (isDelegating()) { + return realReader.hasName(); + } else { + return false; + } + } + + public boolean hasNext() throws XMLStreamException { + if (state == STATE_COMPLETE_AT_NEXT) { + return true; + } else if (state == STATE_COMPLETED) { + return false; + } else if (state == STATE_SWITCHED) { + return realReader.hasNext(); + } else { + return true; + } + } + + public boolean hasText() { + if (isDelegating()) { + return realReader.hasText(); + } else { + return false; + } + } + + public boolean isAttributeSpecified(int i) { + if (isDelegating()) { + return realReader.isAttributeSpecified(i); + } else { + return false; + } + } + + public boolean isCharacters() { + if (isDelegating()) { + return realReader.isCharacters(); + } else { + return false; + } + } + + private boolean isDelegating() { + return state == STATE_SWITCHED || state == STATE_COMPLETE_AT_NEXT; + } + + public boolean isEndElement() { + if (isDelegating()) { + return realReader.isEndElement(); + } else { + return false; + } + } + + public boolean isStandalone() { + if (isDelegating()) { + return realReader.isStandalone(); + } else { + return false; + } + } + + public boolean isStartElement() { + if (isDelegating()) { + return realReader.isStartElement(); + } else { + return false; + } + } + + public boolean isWhiteSpace() { + if (isDelegating()) { + return realReader.isWhiteSpace(); + } else { + return false; + } + } + + public int next() throws XMLStreamException { + int returnEvent; + + switch (state) { + case STATE_SWITCHED: + returnEvent = realReader.next(); + if (returnEvent == END_DOCUMENT) { + state = STATE_COMPLETED; + } else if (!realReader.hasNext()) { + state = STATE_COMPLETE_AT_NEXT; + } + if (fragment && returnEvent == END_ELEMENT) { + level--; + if (level == 0) { + // We are now at the end of the top-level element in the fragment + state = STATE_COMPLETE_AT_NEXT; + } + } + if (fragment && returnEvent == START_ELEMENT) { + level++; + } + break; + case STATE_INIT: + state = STATE_SWITCHED; + returnEvent = realReader.getEventType(); + if (returnEvent == START_ELEMENT) { + // The real reader is positioned at the top-level element in the fragment + level = 0; + fragment = true; + } + break; + case STATE_COMPLETE_AT_NEXT: + state = STATE_COMPLETED; + returnEvent = END_DOCUMENT; + break; + case STATE_COMPLETED: + // oops - no way we can go beyond this + throw new NoSuchElementException("End of stream has reached."); + default: + throw new UnsupportedOperationException(); + } + + return returnEvent; + } + + public int nextTag() throws XMLStreamException { + if (isDelegating()) { + int returnEvent = realReader.nextTag(); + if (fragment && returnEvent == END_ELEMENT) { + level--; + if (level == 0) { + // We are now at the end of the top-level element in the fragment + state = STATE_COMPLETE_AT_NEXT; + } + } + if (fragment && returnEvent == START_ELEMENT) { + level++; + } + return returnEvent; + } else { + throw new XMLStreamException(); + } + } + + public void require(int i, String s, String s1) throws XMLStreamException { + if (isDelegating()) { + realReader.require(i, s, s1); + } + } + + public boolean standaloneSet() { + if (isDelegating()) { + return realReader.standaloneSet(); + } else { + return false; + } + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLFragmentStreamReader.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLFragmentStreamReader.java new file mode 100644 index 0000000000..a42d6acc9a --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLFragmentStreamReader.java @@ -0,0 +1,53 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.namespace.NamespaceContext; +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamReader; + +public interface XMLFragmentStreamReader extends XMLStreamReader { + QName NIL_QNAME = new QName("http://www.w3.org/2001/XMLSchema-instance", "nil", "xsi"); + String NIL_VALUE_TRUE = "true"; + + /** + * this will help to handle Text within the current element. user should + * pass the element text to the property list as this ELEMENT_TEXT as the + * key. This key deliberately has a space in it so that it is not a valid + * XML name + */ + String ELEMENT_TEXT = "Element Text"; + + /** + * Extra method to query the state of the pullparser + */ + boolean isDone(); + + /** + * add the parent namespace context to this parser + */ + void setParentNamespaceContext(NamespaceContext nsContext); + + /** + * Initiate the parser - this will do whatever the needed tasks to initiate + * the parser and must be called before attempting any specific parsing + * using this parser + */ + void init(); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLFragmentStreamReaderImpl.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLFragmentStreamReaderImpl.java new file mode 100644 index 0000000000..f1084cf2a3 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLFragmentStreamReaderImpl.java @@ -0,0 +1,857 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.util.Arrays; +import java.util.HashMap; +import java.util.Map; + +import javax.xml.namespace.NamespaceContext; +import javax.xml.namespace.QName; +import javax.xml.stream.Location; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; + +/** + * This is the new implementation of the XMLFramentStreamReader. The approach + * here is simple When the pull parser needs to generate events for a particular + * name-value(s) pair it always hands over (delegates) the task to another pull + * parser which knows how to deal with it The common types of name value pairs + * we'll come across are + *

        + *
      • String name/QName name - String value + *
      • String name/QName name - String[] value + *
      • QName name/String name - XMLStreamReader value + *
      • QName name/String name - XMLStreamable value + *
      • QName name/String name - Java bean + *
      • QName name/String name - Datahandler + * + *
      + *

      As for the attributes, these are the possible combinations in the array + *

        + *
      • String name/QName name - String value + *
      + * Note that certain array methods have been deliberately removed to avoid + * complications. The generated code will take the trouble to lay the elements + * of the array in the correct order

      Hence there will be a parser impl + * that knows how to handle these types, and this parent parser will always + * delegate these tasks to the child pullparasers in effect this is one huge + * state machine that has only a few states and delegates things down to the + * child parsers whenever possible

      + * + * @version $Rev$ $Date$ + */ +public class XMLFragmentStreamReaderImpl implements XMLFragmentStreamReader { + + private static final int DELEGATED_STATE = 2; + private static final int END_ELEMENT_STATE = 1; + // states for this pullparser - it can only have four states + private static final int START_ELEMENT_STATE = 0; + private static final int TEXT_STATE = 3; + + protected NamedProperty[] attributes; + + // reference to the child reader + protected XMLFragmentStreamReader childReader; + // current property index + // initialized at zero + protected int index; + protected Map declaredNamespaceMap = new HashMap(); + protected QName elementQName; + + // we always create a new namespace context + protected DelegatingNamespaceContext namespaceContext = new DelegatingNamespaceContext(); + + protected NamedProperty[] elements; + + // integer field that keeps the state of this + // parser. + protected int state = START_ELEMENT_STATE; + + /* + * we need to pass in a namespace context since when delegated, we've no + * idea of the current namespace context. So it needs to be passed on here! + */ + public XMLFragmentStreamReaderImpl(QName elementQName, NamedProperty[] elements, NamedProperty[] attributes) { + // validate the lengths, since both the arrays are supposed + // to have + this.elements = elements == null ? new NamedProperty[0] : elements; + this.elementQName = elementQName; + this.attributes = attributes == null ? new NamedProperty[0] : attributes; + } + + protected XMLFragmentStreamReaderImpl(QName elementQName) { + this.elementQName = elementQName; + } + + /** + * add the namespace context + */ + + public void setParentNamespaceContext(NamespaceContext nsContext) { + // register the namespace context passed in to this + this.namespaceContext.setParentNsContext(nsContext); + + } + + protected NamedProperty[] getElements() { + return elements; + } + + protected NamedProperty[] getAttributes() { + return attributes; + } + + protected QName[] getNamespaces() { + return new QName[0]; + } + + /** + * @param prefix + * @param uri + */ + protected void addToNsMap(String prefix, String uri) { + if (!uri.equals(namespaceContext.getNamespaceURI(prefix))) { + namespaceContext.pushNamespace(prefix, uri); + declaredNamespaceMap.put(prefix, uri); + } + } + + public void close() throws XMLStreamException { + // do nothing here - we have no resources to free + } + + public int getAttributeCount() { + return (state == DELEGATED_STATE) ? childReader.getAttributeCount() : (state == START_ELEMENT_STATE + ? getAttributes().length : 0); + } + + public String getAttributeLocalName(int i) { + if (state == DELEGATED_STATE) { + return childReader.getAttributeLocalName(i); + } else if (state == START_ELEMENT_STATE) { + QName name = getAttributeName(i); + if (name == null) { + return null; + } else { + return name.getLocalPart(); + } + } else { + throw new IllegalStateException(); + } + } + + /** + * @param i + */ + public QName getAttributeName(int i) { + if (state == DELEGATED_STATE) { + return childReader.getAttributeName(i); + } else if (state == START_ELEMENT_STATE) { + if ((i >= (getAttributes().length)) || i < 0) { // out of range + return null; + } else { + // get the attribute pointer + QName attribPointer = getAttributes()[i].getKey(); + // case one - attrib name is null + // this should be the pointer to the OMAttribute then + if (attribPointer == null) { + throw new UnsupportedOperationException(); + } else if (attribPointer instanceof QName) { + return attribPointer; + } else { + return null; + } + } + } else { + throw new IllegalStateException(); // as per the API contract + } + + } + + public String getAttributeNamespace(int i) { + if (state == DELEGATED_STATE) { + return childReader.getAttributeNamespace(i); + } else if (state == START_ELEMENT_STATE) { + QName name = getAttributeName(i); + if (name == null) { + return null; + } else { + return name.getNamespaceURI(); + } + } else { + throw new IllegalStateException(); + } + } + + public String getAttributePrefix(int i) { + if (state == DELEGATED_STATE) { + return childReader.getAttributePrefix(i); + } else if (state == START_ELEMENT_STATE) { + QName name = getAttributeName(i); + if (name == null) { + return null; + } else { + return name.getPrefix(); + } + } else { + throw new IllegalStateException(); + } + } + + public String getAttributeType(int i) { + return null; // not supported + } + + public String getAttributeValue(int i) { + if (state == DELEGATED_STATE) { + return childReader.getAttributeValue(i); + } else if (state == START_ELEMENT_STATE) { + if ((i >= (getAttributes().length)) || i < 0) { // out of range + return null; + } else { + // get the attribute pointer + QName attribPointer = getAttributes()[i].getKey(); + Object omAttribObj = getAttributes()[i].getValue(); + // case one - attrib name is null + // this should be the pointer to the OMAttribute then + if (attribPointer == null) { + throw new UnsupportedOperationException(); + } else if (attribPointer instanceof QName) { + return (String)omAttribObj; + } else { + return null; + } + } + } else { + throw new IllegalStateException(); + } + + } + + public String getAttributeValue(String nsUri, String localName) { + + int attribCount = getAttributeCount(); + String returnValue = null; + QName attribQualifiedName; + for (int i = 0; i < attribCount; i++) { + attribQualifiedName = getAttributeName(i); + if (nsUri == null) { + if (localName.equals(attribQualifiedName.getLocalPart())) { + returnValue = getAttributeValue(i); + break; + } + } else { + if (localName.equals(attribQualifiedName.getLocalPart()) && nsUri.equals(attribQualifiedName + .getNamespaceURI())) { + returnValue = getAttributeValue(i); + break; + } + } + + } + + return returnValue; + } + + public String getCharacterEncodingScheme() { + return null; // TODO - should we return something for this ? + } + + /** + * TODO implement the right contract for this + * + * @throws XMLStreamException + */ + public String getElementText() throws XMLStreamException { + if (state == DELEGATED_STATE) { + return childReader.getElementText(); + } else { + return null; + } + + } + + // ///////////////////////////////////////////////////////////////////////// + // / attribute handling + // ///////////////////////////////////////////////////////////////////////// + + public String getEncoding() { + if (state == DELEGATED_STATE) { + return childReader.getEncoding(); + } else { + // we've no idea what the encoding is going to be in this case + // perhaps we ought to return some constant here, which the user + // might + // have access to change! + return null; + } + } + + public int getEventType() { + if (state == START_ELEMENT_STATE) { + return START_ELEMENT; + } else if (state == END_ELEMENT_STATE) { + return END_ELEMENT; + } else if (state == TEXT_STATE) { + return CHARACTERS; + } else { // this is the delegated state + return childReader.getEventType(); + } + } + + public String getLocalName() { + if (state == DELEGATED_STATE) { + return childReader.getLocalName(); + } else if (state != TEXT_STATE) { + return elementQName.getLocalPart(); + } else { + throw new IllegalStateException(); + } + } + + /** + */ + public Location getLocation() { + // return a default location + return new Location() { + public int getCharacterOffset() { + return 0; + } + + public int getColumnNumber() { + return 0; + } + + public int getLineNumber() { + return 0; + } + + public String getPublicId() { + return null; + } + + public String getSystemId() { + return null; + } + }; + } + + public QName getName() { + if (state == DELEGATED_STATE) { + return childReader.getName(); + } else if (state != TEXT_STATE) { + return elementQName; + } else { + throw new IllegalStateException(); + } + + } + + public NamespaceContext getNamespaceContext() { + if (state == DELEGATED_STATE) { + return childReader.getNamespaceContext(); + } else { + return namespaceContext; + } + + } + + public int getNamespaceCount() { + if (state == DELEGATED_STATE) { + return childReader.getNamespaceCount(); + } else { + return declaredNamespaceMap.size(); + } + } + + /** + * @param i + */ + public String getNamespacePrefix(int i) { + if (state == DELEGATED_STATE) { + return childReader.getNamespacePrefix(i); + } else if (state != TEXT_STATE) { + // order the prefixes + String[] prefixes = makePrefixArray(); + if ((i >= prefixes.length) || (i < 0)) { + return null; + } else { + return prefixes[i]; + } + + } else { + throw new IllegalStateException(); + } + + } + + public String getNamespaceURI() { + if (state == DELEGATED_STATE) { + return childReader.getNamespaceURI(); + } else if (state == TEXT_STATE) { + return null; + } else { + return elementQName.getNamespaceURI(); + } + } + + // ///////////////////////////////////////////////////////////////////////// + // //////////// end of attribute handling + // ///////////////////////////////////////////////////////////////////////// + + // ////////////////////////////////////////////////////////////////////////// + // //////////// namespace handling + // ////////////////////////////////////////////////////////////////////////// + + public String getNamespaceURI(int i) { + if (state == DELEGATED_STATE) { + return childReader.getNamespaceURI(i); + } else if (state != TEXT_STATE) { + String namespacePrefix = getNamespacePrefix(i); + return namespacePrefix == null ? null : (String)declaredNamespaceMap.get(namespacePrefix); + } else { + throw new IllegalStateException(); + } + + } + + public String getNamespaceURI(String prefix) { + return namespaceContext.getNamespaceURI(prefix); + } + + public String getPIData() { + throw new UnsupportedOperationException("Yet to be implemented !!"); + } + + public String getPITarget() { + throw new UnsupportedOperationException("Yet to be implemented !!"); + } + + public String getPrefix() { + if (state == DELEGATED_STATE) { + return childReader.getPrefix(); + } else if (state == TEXT_STATE) { + return null; + } else { + String prefix = elementQName.getPrefix(); + return "".equals(prefix) ? null : prefix; + } + } + + // ///////////////////////////////////////////////////////////////////////// + // /////// end of namespace handling + // ///////////////////////////////////////////////////////////////////////// + + /** + * @param key + * @throws IllegalArgumentException + */ + public Object getProperty(String key) throws IllegalArgumentException { + if (state == START_ELEMENT_STATE || state == END_ELEMENT_STATE) { + return null; + } else if (state == TEXT_STATE) { + return null; + } else if (state == DELEGATED_STATE) { + return childReader.getProperty(key); + } else { + return null; + } + + } + + public String getText() { + if (state == DELEGATED_STATE) { + return childReader.getText(); + } else if (state == TEXT_STATE) { + return (String)getElements()[index - 1].getValue(); + } else { + throw new IllegalStateException(); + } + } + + public char[] getTextCharacters() { + if (state == DELEGATED_STATE) { + return childReader.getTextCharacters(); + } else if (state == TEXT_STATE) { + return getElements()[index - 1].getValue() == null ? new char[0] : ((String)getElements()[index - 1] + .getValue()).toCharArray(); + } else { + throw new IllegalStateException(); + } + } + + private int copy(int sourceStart, char[] target, int targetStart, int length) { + char[] source = getTextCharacters(); + if (sourceStart > source.length) { + throw new IndexOutOfBoundsException("source start > source length"); + } + int sourceLen = source.length - sourceStart; + if (length > sourceLen) { + length = sourceLen; + } + System.arraycopy(source, sourceStart, target, targetStart, length); + return sourceLen; + } + + public int getTextCharacters(int i, char[] chars, int i1, int i2) throws XMLStreamException { + if (state == DELEGATED_STATE) { + return childReader.getTextCharacters(i, chars, i1, i2); + } else if (state == TEXT_STATE) { + return copy(i, chars, i1, i2); + } else { + throw new IllegalStateException(); + } + } + + public int getTextLength() { + if (state == DELEGATED_STATE) { + return childReader.getTextLength(); + } else if (state == TEXT_STATE) { + return getTextCharacters().length; + } else { + throw new IllegalStateException(); + } + } + + public int getTextStart() { + if (state == DELEGATED_STATE) { + return childReader.getTextStart(); + } else if (state == TEXT_STATE) { + return 0; // assume text always starts at 0 + } else { + throw new IllegalStateException(); + } + } + + public String getVersion() { + return null; + } + + public boolean hasName() { + // since this parser always has a name, the hasName + // has to return true if we are still navigating this element + // if not we should ask the child reader for it. + if (state == DELEGATED_STATE) { + return childReader.hasName(); + } else { + return state != TEXT_STATE; + } + } + + /** + * @throws XMLStreamException + */ + public boolean hasNext() throws XMLStreamException { + if (state == DELEGATED_STATE) { + if (childReader.isDone()) { + // the child reader is done. We shouldn't be getting the + // hasNext result from the child pullparser then + return true; + } else { + return childReader.hasNext(); + } + } else { + return state == START_ELEMENT_STATE || state == TEXT_STATE; + + } + } + + /** + * check the validity of this implementation + */ + public boolean hasText() { + if (state == DELEGATED_STATE) { + return childReader.hasText(); + } else { + return state == TEXT_STATE; + } + + } + + /** + * we need to split out the calling to the populate namespaces separately + * since this needs to be done *after* setting the parent namespace context. + * We cannot assume it will happen at construction! + */ + public void init() { + // here we have an extra issue to attend to. we need to look at the + // prefixes and URIs (the combination) and populate a HashMap of + // namespaces. The HashMap of namespaces will be used to serve the + // namespace context + + populateNamespaceContext(); + } + + public boolean isAttributeSpecified(int i) { + return false; // not supported + } + + public boolean isCharacters() { + if (state == START_ELEMENT_STATE || state == END_ELEMENT_STATE) { + return false; + } + return childReader.isCharacters(); + } + + /** + * are we done ? + */ + public boolean isDone() { + return state == END_ELEMENT_STATE; + } + + public boolean isEndElement() { + if (state == START_ELEMENT_STATE) { + return false; + } else if (state == END_ELEMENT_STATE) { + return true; + } + return childReader.isEndElement(); + } + + public boolean isStandalone() { + return true; + } + + public boolean isStartElement() { + if (state == START_ELEMENT_STATE) { + return true; + } else if (state == END_ELEMENT_STATE) { + return false; + } + return childReader.isStartElement(); + } + + public boolean isWhiteSpace() { + if (state == START_ELEMENT_STATE || state == END_ELEMENT_STATE) { + return false; + } + return childReader.isWhiteSpace(); + } + + /** + * Get the prefix list from the HashTable and take that into an array + */ + private String[] makePrefixArray() { + String[] prefixes = declaredNamespaceMap.keySet().toArray(new String[declaredNamespaceMap.size()]); + Arrays.sort(prefixes); + return prefixes; + } + + /** + * By far this should be the most important method in this class this method + * changes the state of the parser + */ + public int next() throws XMLStreamException { + int returnEvent = -1; // invalid state is the default state + switch (state) { + case START_ELEMENT_STATE: + // current element is start element. We should be looking at the + // property list and making a pullparser for the property value + if (getElements() == null || getElements().length == 0) { + // no properties - move to the end element state + // straight away + state = END_ELEMENT_STATE; + returnEvent = END_ELEMENT; + } else { + // there are properties. now we should delegate this task to + // a + // child reader depending on the property type + returnEvent = processProperties(); + + } + break; + case END_ELEMENT_STATE: + // we've reached the end element already. If the user tries to + // push + // further ahead then it is an exception + throw new XMLStreamException("Trying to go beyond the end of the pullparser"); + + case DELEGATED_STATE: + if (childReader.isDone()) { + // we've reached the end! + if (index > (getElements().length - 1)) { + state = END_ELEMENT_STATE; + returnEvent = END_ELEMENT; + } else { + returnEvent = processProperties(); + } + } else { + returnEvent = childReader.next(); + } + break; + + case TEXT_STATE: + // if there are any more event we should be delegating to + // processProperties. if not we just return an end element + if (index > (getElements().length - 1)) { + state = END_ELEMENT_STATE; + returnEvent = END_ELEMENT; + } else { + returnEvent = processProperties(); + } + break; + } + return returnEvent; + } + + // ///////////////////////////////////////////////////////////////////////// + // / Other utility methods + // //////////////////////////////////////////////////////////////////////// + + /** + * TODO implement this + * + * @throws XMLStreamException + */ + public int nextTag() throws XMLStreamException { + return 0; + } + + /** + * Populates a namespace context + */ + private void populateNamespaceContext() { + + // first add the current element namespace to the namespace context + // declare it if not found + addToNsMap(elementQName.getPrefix(), elementQName.getNamespaceURI()); + + for (QName n : getNamespaces()) { + addToNsMap(n.getPrefix(), n.getNamespaceURI()); + } + + // traverse through the attributes and populate the namespace context + // the attrib list can be of many combinations + // the valid combinations are + // String - String + // QName - QName + // null - OMAttribute + + for (int i = 0; i < getAttributes().length; i++) { // jump in two + QName attrQName = getAttributes()[i].getKey(); + if (!"".equals(attrQName.getNamespaceURI())) { + addToNsMap(attrQName.getPrefix(), attrQName.getNamespaceURI()); + } + } + } + + /** + * A convenient method to reuse the properties + * + * @return event to be thrown + * @throws XMLStreamException + */ + private int processProperties() throws XMLStreamException { + // move to the next property depending on the current property + // index + QName propertyQName = getElements()[index].getKey(); + boolean textFound = false; + if (propertyQName == null) { + throw new XMLStreamException("property key cannot be null!"); + } else if (ELEMENT_TEXT.equals(propertyQName.getLocalPart())) { + // propPointer being a String has a special case + // that is it can be a the special constant ELEMENT_TEXT that + // says this text event + textFound = true; + } + + // OK! we got the key. Now look at the value + Object propertyValue = getElements()[index].getValue(); + // cater for the special case now + if (textFound) { + // no delegation here - make the parser null and immediately + // return with the event characters + childReader = null; + state = TEXT_STATE; + ++index; + return CHARACTERS; + } else if (propertyValue == null) { + // if the value is null we delegate the work to a nullable + // parser + childReader = new NilElementStreamReader(propertyQName); + childReader.setParentNamespaceContext(this.namespaceContext); + childReader.init(); + } else if (propertyValue instanceof String) { + // strings are handled by the NameValuePairStreamReader + childReader = new NameValuePairStreamReader(propertyQName, (String)propertyValue); + childReader.setParentNamespaceContext(this.namespaceContext); + childReader.init(); + } else if (propertyValue instanceof String[]) { + // string[] are handled by the NameValueArrayStreamReader + // if the array is empty - skip it + if (((String[])propertyValue).length == 0) { + // advance the index + ++index; + return processProperties(); + } else { + childReader = new NameValueArrayStreamReader(propertyQName, (String[])propertyValue); + childReader.setParentNamespaceContext(this.namespaceContext); + childReader.init(); + } + + } else if (propertyValue instanceof XMLStreamable) { + // ADBbean has it's own method to get a reader + XMLStreamReader reader = ((XMLStreamable)propertyValue).getXMLStreamReader(propertyQName); + // we know for sure that this is an ADB XMLStreamreader. + // However we need to make sure that it is compatible + if (reader instanceof XMLFragmentStreamReader) { + childReader = (XMLFragmentStreamReader)reader; + childReader.setParentNamespaceContext(this.namespaceContext); + childReader.init(); + } else { + // wrap it to make compatible + childReader = new WrappingXMLStreamReader(reader); + } + } else if (propertyValue instanceof XMLStreamReader) { + XMLStreamReader reader = (XMLStreamReader)propertyValue; + if (reader instanceof XMLFragmentStreamReader) { + childReader = (XMLFragmentStreamReader)reader; + childReader.setParentNamespaceContext(this.namespaceContext); + childReader.init(); + } else { + // wrap it to make compatible + childReader = new WrappingXMLStreamReader(reader); + } + + } else { + // all special possibilities has been tried! Let's treat + // the thing as a bean and try generating events from it + childReader = new WrappingXMLStreamReader(new BeanXMLStreamReaderImpl(propertyQName, propertyValue)); + // we cannot register the namespace context here + } + + // set the state here + state = DELEGATED_STATE; + // we are done with the delegation + // increment the property index + ++index; + return childReader.getEventType(); + } + + public void require(int i, String string, String string1) throws XMLStreamException { + throw new UnsupportedOperationException(); + } + + public boolean standaloneSet() { + return true; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLGroupDataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLGroupDataBinding.java new file mode 100644 index 0000000000..f7c895db1e --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLGroupDataBinding.java @@ -0,0 +1,57 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + +import java.io.InputStream; +import java.io.OutputStream; +import java.io.Reader; +import java.io.Writer; + +import javax.xml.stream.XMLEventReader; +import javax.xml.stream.XMLEventWriter; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.tuscany.sca.databinding.impl.GroupDataBinding; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.util.XMLType; +import org.xml.sax.ContentHandler; +import org.xml.sax.InputSource; + +/** + * A Group DataBinding + * + * @version $Rev$ $Date$ + */ +public class XMLGroupDataBinding extends GroupDataBinding { + + public XMLGroupDataBinding() { + super(new Class[] {InputStream.class, OutputStream.class, Reader.class, Writer.class, + // Source.class, Result.class, + InputSource.class, ContentHandler.class, XMLStreamReader.class, + XMLStreamWriter.class, XMLEventReader.class, XMLEventWriter.class}); + } + + @Override + protected Object getLogical(Class markerType, Operation operation) { + return XMLType.UNKNOWN; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamReader2Node.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamReader2Node.java new file mode 100644 index 0000000000..e2d0416aec --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamReader2Node.java @@ -0,0 +1,75 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.stream.XMLStreamReader; + +import org.apache.tuscany.sca.databinding.DataPipe; +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.apache.tuscany.sca.databinding.impl.DOMHelper; +import org.w3c.dom.Document; +import org.w3c.dom.Node; +import org.xml.sax.ContentHandler; + +/** + * Transform DOM Node to XML XMLStreamReader + * + * @version $Rev$ $Date$ + */ +public class XMLStreamReader2Node extends BaseTransformer implements + PullTransformer { + + private XMLStreamReader2SAX stax2sax = new XMLStreamReader2SAX(); + + public Node transform(XMLStreamReader source, TransformationContext context) { + try { + DataPipe pipe = new SAX2DOMPipe().newInstance(); + stax2sax.transform(source, pipe.getSink(), context); + Node node = pipe.getResult(); + source.close(); + if (node instanceof Document) { + Document doc = (Document)node; + return DOMHelper.adjustElementName(context, doc.getDocumentElement()); + } else { + return node; + } + } catch (Exception e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return XMLStreamReader.class; + } + + @Override + protected Class getTargetType() { + return Node.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamReader2SAX.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamReader2SAX.java new file mode 100644 index 0000000000..9b39f039b1 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamReader2SAX.java @@ -0,0 +1,70 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.stream.XMLStreamReader; + +import org.apache.tuscany.sca.databinding.PushTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; +import org.xml.sax.ContentHandler; + +/** + * XMLStreamReader to SAX events + * + * @version $Rev$ $Date$ + */ +public class XMLStreamReader2SAX extends BaseTransformer implements + PushTransformer { + + @Override + protected Class getTargetType() { + return ContentHandler.class; + } + + @Override + protected Class getSourceType() { + return XMLStreamReader.class; + } + + /** + * @see org.apache.tuscany.sca.databinding.PushTransformer#getWeight() + */ + @Override + public int getWeight() { + return 20; + } + + /** + * @see org.apache.tuscany.sca.databinding.PushTransformer#transform(java.lang.Object, + * java.lang.Object, + * org.apache.tuscany.sca.databinding.TransformationContext) + */ + public void transform(XMLStreamReader source, ContentHandler sink, TransformationContext context) { + StAX2SAXAdapter adapter = new StAX2SAXAdapter(false); + try { + adapter.parse(source, sink); + source.close(); + } catch (Exception e) { + throw new TransformationException(e); + } + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamReader2String.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamReader2String.java new file mode 100644 index 0000000000..6db731bc9f --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamReader2String.java @@ -0,0 +1,57 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; + +import org.apache.tuscany.sca.databinding.PullTransformer; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.databinding.TransformationException; +import org.apache.tuscany.sca.databinding.impl.BaseTransformer; + +public class XMLStreamReader2String extends BaseTransformer implements + PullTransformer { + + public String transform(XMLStreamReader source, TransformationContext context) { + try { + String str = StAXHelper.save(source); + source.close(); + return str; + } catch (XMLStreamException e) { + throw new TransformationException(e); + } + } + + @Override + protected Class getSourceType() { + return XMLStreamReader.class; + } + + @Override + protected Class getTargetType() { + return String.class; + } + + @Override + public int getWeight() { + return 40; + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamSerializer.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamSerializer.java new file mode 100644 index 0000000000..920ebb511c --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamSerializer.java @@ -0,0 +1,287 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.namespace.NamespaceContext; +import javax.xml.stream.XMLStreamConstants; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +/** + * The XMLStreamSerializer pulls events from the XMLStreamReader and dumps into the XMLStreamWriter + * + * @version $Rev$ $Date$ + */ +public class XMLStreamSerializer implements XMLStreamConstants { + public static final String NAMESPACE_PREFIX = "ns"; + private static int namespaceSuffix; + + /* + * The behavior of the Serializer is such that it returns when it encounters the starting element for the second + * time. The depth variable tracks the depth of the Serializer and tells it when to return. Note that it is assumed + * that this Serialization starts on an Element. + */ + + /** + * Field depth + */ + private int depth; + + /** + * Generates a unique namespace prefix that is not in the scope of the NamespaceContext + * + * @param nsCtxt + * @return string + */ + private String generateUniquePrefix(NamespaceContext nsCtxt) { + String prefix = NAMESPACE_PREFIX + namespaceSuffix++; + // null should be returned if the prefix is not bound! + while (nsCtxt.getNamespaceURI(prefix) != null) { + prefix = NAMESPACE_PREFIX + namespaceSuffix++; + } + + return prefix; + } + + /** + * Method serialize. + * + * @param node + * @param writer + * @throws XMLStreamException + */ + public void serialize(XMLStreamReader node, XMLStreamWriter writer) throws XMLStreamException { + serializeNode(node, writer); + } + + /** + * @param reader + * @param writer + * @throws XMLStreamException + */ + protected void serializeAttributes(XMLStreamReader reader, XMLStreamWriter writer) throws XMLStreamException { + int count = reader.getAttributeCount(); + String prefix; + String namespaceName; + String writerPrefix; + for (int i = 0; i < count; i++) { + prefix = reader.getAttributePrefix(i); + namespaceName = reader.getAttributeNamespace(i); + /* + * Due to parser implementations returning null as the namespace URI (for the empty namespace) we need to + * make sure that we deal with a namespace name that is not null. The best way to work around this issue is + * to set the namespace URI to "" if it is null + */ + if (namespaceName == null) { + namespaceName = ""; + } + + writerPrefix = writer.getPrefix(namespaceName); + + if (!"".equals(namespaceName)) { + // prefix has already being declared but this particular + // attrib has a + // no prefix attached. So use the prefix provided by the + // writer + if (writerPrefix != null && (prefix == null || prefix.equals(""))) { + writer.writeAttribute(writerPrefix, namespaceName, reader.getAttributeLocalName(i), reader + .getAttributeValue(i)); + + // writer prefix is available but different from the + // current + // prefix of the attrib. We should be declaring the new + // prefix + // as a namespace declaration + } else if (prefix != null && !"".equals(prefix) && !prefix.equals(writerPrefix)) { + writer.writeNamespace(prefix, namespaceName); + writer.writeAttribute(prefix, namespaceName, reader.getAttributeLocalName(i), reader + .getAttributeValue(i)); + + // prefix is null (or empty), but the namespace name is + // valid! it has not + // being written previously also. So we need to generate + // a prefix + // here + } else if (prefix == null || prefix.equals("")) { + prefix = generateUniquePrefix(writer.getNamespaceContext()); + writer.writeNamespace(prefix, namespaceName); + writer.writeAttribute(prefix, namespaceName, reader.getAttributeLocalName(i), reader + .getAttributeValue(i)); + } else { + writer.writeAttribute(prefix, namespaceName, reader.getAttributeLocalName(i), reader + .getAttributeValue(i)); + } + } else { + // empty namespace is equal to no namespace! + writer.writeAttribute(reader.getAttributeLocalName(i), reader.getAttributeValue(i)); + } + + } + } + + /** + * Method serializeCData. + * + * @param reader + * @param writer + * @throws XMLStreamException + */ + protected void serializeCData(XMLStreamReader reader, XMLStreamWriter writer) throws XMLStreamException { + writer.writeCData(reader.getText()); + } + + /** + * Method serializeComment. + * + * @param reader + * @param writer + * @throws XMLStreamException + */ + protected void serializeComment(XMLStreamReader reader, XMLStreamWriter writer) throws XMLStreamException { + writer.writeComment(reader.getText()); + } + + /** + * @param reader + * @param writer + * @throws XMLStreamException + */ + protected void serializeElement(XMLStreamReader reader, XMLStreamWriter writer) throws XMLStreamException { + String prefix = reader.getPrefix(); + String nameSpaceName = reader.getNamespaceURI(); + if (nameSpaceName != null) { + String writerPrefix = writer.getPrefix(nameSpaceName); + if (writerPrefix != null) { + writer.writeStartElement(nameSpaceName, reader.getLocalName()); + } else { + if (prefix != null) { + writer.writeStartElement(prefix, reader.getLocalName(), nameSpaceName); + writer.writeNamespace(prefix, nameSpaceName); + // writer.setPrefix(prefix, nameSpaceName); + } else { + // [rfeng] We need to set default NS 1st before calling writeStateElement + writer.setDefaultNamespace(nameSpaceName); + writer.writeStartElement(nameSpaceName, reader.getLocalName()); + writer.writeDefaultNamespace(nameSpaceName); + } + } + } else { + writer.writeStartElement(reader.getLocalName()); + } + + // add the namespaces + int count = reader.getNamespaceCount(); + String namespacePrefix; + for (int i = 0; i < count; i++) { + namespacePrefix = reader.getNamespacePrefix(i); + // [rfeng] The following is commented out to allow to default ns + // if (namespacePrefix != null && namespacePrefix.length() == 0) { + // continue; + // } + + serializeNamespace(namespacePrefix, reader.getNamespaceURI(i), writer); + } + + // add attributes + serializeAttributes(reader, writer); + + } + + /** + * Method serializeEndElement. + * + * @param writer + * @throws XMLStreamException + */ + protected void serializeEndElement(XMLStreamWriter writer) throws XMLStreamException { + writer.writeEndElement(); + } + + /** + * Method serializeNamespace. + * + * @param prefix + * @param uri + * @param writer + * @throws XMLStreamException + */ + private void serializeNamespace(String prefix, String uri, XMLStreamWriter writer) throws XMLStreamException { + String prefix1 = writer.getPrefix(uri); + if (prefix1 == null) { + writer.writeNamespace(prefix, uri); + // writer.setPrefix(prefix, uri); + } + } + + /** + * Method serializeNode. + * + * @param reader + * @param writer + * @throws XMLStreamException + */ + protected void serializeNode(XMLStreamReader reader, XMLStreamWriter writer) throws XMLStreamException { + while (true) { + int event = reader.getEventType(); + if (event == START_ELEMENT) { + serializeElement(reader, writer); + depth++; + } else if (event == ATTRIBUTE) { + serializeAttributes(reader, writer); + } else if (event == CHARACTERS) { + serializeText(reader, writer); + } else if (event == COMMENT) { + serializeComment(reader, writer); + } else if (event == CDATA) { + serializeCData(reader, writer); + } else if (event == END_ELEMENT) { + serializeEndElement(writer); + depth--; + } else if (event == START_DOCUMENT) { + depth++; // if a start document is found then increment + writer.writeStartDocument(); + // the depth + } else if (event == END_DOCUMENT) { + if (depth != 0) { + depth--; // for the end document - reduce the depth + } + writer.writeEndDocument(); + } + if (depth == 0) { + break; + } + if (reader.hasNext()) { + reader.next(); + } else { + break; + } + } + } + + /** + * @param reader + * @param writer + * @throws XMLStreamException + */ + protected void serializeText(XMLStreamReader reader, XMLStreamWriter writer) throws XMLStreamException { + writer.writeCharacters(reader.getText()); + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamable.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamable.java new file mode 100644 index 0000000000..f32f93d098 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStreamable.java @@ -0,0 +1,37 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamReader; + +/** + * An interface represents data that can be read using StAX streaming + * + * @version $Rev$ $Date$ + */ +public interface XMLStreamable { + /** + * Get the XMLStreamReader for StAX processing + * + * @param rootElementName the name of the element to be generated + * @return Returns a pull parser. + */ + XMLStreamReader getXMLStreamReader(QName rootElementName); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStringDataBinding.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStringDataBinding.java new file mode 100644 index 0000000000..22b173dce5 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XMLStringDataBinding.java @@ -0,0 +1,50 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + + +import org.apache.tuscany.sca.databinding.impl.BaseDataBinding; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * A DataBinding for the XML string + * + * @version $Rev$ $Date$ + */ +public class XMLStringDataBinding extends BaseDataBinding { + public static final String NAME = String.class.getName(); + + public XMLStringDataBinding() { + super(NAME, String.class); + } + + @Override + public boolean introspect(DataType type, Operation operation) { + if (type.getPhysical() == String.class && NAME.equals(type.getDataBinding())) { + type.setDataBinding(NAME); + type.setLogical(XMLType.UNKNOWN); + return true; + } else { + return false; + } + } +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XmlNode.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XmlNode.java new file mode 100644 index 0000000000..86ebd627f7 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XmlNode.java @@ -0,0 +1,69 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + +import java.util.Iterator; +import java.util.List; +import java.util.Map; + +import javax.xml.namespace.QName; + +/** + * @version $Rev$ $Date$ + */ +public interface XmlNode { + enum Type {ELEMENT, ATTRIBUTE, CHARACTERS, READER}; + /** + * Returns the children of the receiver as an Iterator. + */ + Iterator children(); + + /** + * Returns the attributes of the element as an List. Namespace declarations + * should be excluded. + * + * @return + */ + List attributes(); + + /** + * Returns a map of prefix to namespace URI + * @return + */ + Map namespaces(); + + /** + * Return the QName of the element. If it's for a text node, the name is null. + * @return + */ + QName getName(); + + /** + * Return the text value of the leaf element + * @return + */ + T getValue(); + + /** + * Return the type of the XML node + * @return + */ + Type getType(); +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XmlNodeIterator.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XmlNodeIterator.java new file mode 100644 index 0000000000..d1632befe1 --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XmlNodeIterator.java @@ -0,0 +1,355 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tuscany.sca.databinding.xml; + +import java.util.ArrayList; +import java.util.EmptyStackException; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; + +import javax.xml.namespace.NamespaceContext; + +/** + * @version $Rev$ $Date$ + */ +public class XmlNodeIterator implements Iterator { + public static final int START = 0; + public static final int END = 1; + + protected FastStack stack; + protected int state; + protected NamespaceContextImpl nsContext; + + public XmlNodeIterator(XmlNode rootNode) { + super(); + List v = new ArrayList(1); + v.add(rootNode); + stack = new FastStack(); + Iterator i = v.iterator(); + stack.push(new ElementHolder(null, i)); + this.state = START; + this.nsContext = new NamespaceContextImpl(null); + } + + public boolean hasNext() { + return !(stack.empty() || (state == END && stack.peek().parent == null)); + } + + public XmlNode next() { + this.state = START; + ElementHolder element = stack.peek(); + Iterator it = element.children; + if (it == null || (!it.hasNext())) { + // End of the children, return END event of parent + stack.pop(); + this.state = END; + this.nsContext = (NamespaceContextImpl)nsContext.getParent(); + return element.parent; + } + XmlNode node = it.next(); + stack.push(new ElementHolder(node, node.children())); + this.nsContext = new NamespaceContextImpl(this.nsContext); + populateNamespaces(node); + return node; + } + + public void remove() { + throw new UnsupportedOperationException(); + } + + public int getState() { + return state; + } + + public NamespaceContext getNamespaceContext() { + return nsContext; + } + + private void populateNamespaces(XmlNode element) { + if (element.getName() != null) { + if (element.namespaces() != null) { + for (Map.Entry e : element.namespaces().entrySet()) { + nsContext.register(e.getKey(), e.getValue()); + } + } + } + } + + private static class ElementHolder { + private XmlNode parent; + private Iterator children; + + public ElementHolder(XmlNode parent, Iterator children) { + this.parent = parent; + this.children = children; + } + } + + private static class NamespaceContextImpl implements NamespaceContext { + private NamespaceContext parent; + private Map map = new HashMap(); + + /** + * @param parent + */ + public NamespaceContextImpl(NamespaceContext parent) { + super(); + this.parent = parent; + if (parent == null) { + map.put("xml", "http://www.w3.org/XML/1998/namespace"); + map.put("xmlns", "http://www.w3.org/2000/xmlns/"); + } + } + + public String getNamespaceURI(String prefix) { + if (prefix == null) { + throw new IllegalArgumentException("Prefix is null"); + } + + String ns = (String)map.get(prefix); + if (ns != null) { + return ns; + } + if (parent != null) { + return parent.getNamespaceURI(prefix); + } + return null; + } + + public String getPrefix(String nsURI) { + if (nsURI == null) + throw new IllegalArgumentException("Namespace is null"); + for (Iterator> i = map.entrySet().iterator(); i.hasNext();) { + Map.Entry entry = i.next(); + if (entry.getValue().equals(nsURI)) { + return entry.getKey(); + } + } + if (parent != null) { + return parent.getPrefix(nsURI); + } + return null; + } + + public Iterator getPrefixes(String nsURI) { + List prefixList = new ArrayList(); + for (Iterator> i = map.entrySet().iterator(); i.hasNext();) { + Map.Entry entry = i.next(); + if (entry.getValue().equals(nsURI)) { + prefixList.add(entry.getKey()); + } + } + final Iterator currentIterator = prefixList.iterator(); + final Iterator parentIterator = parent != null ? null : parent.getPrefixes(nsURI); + return new Iterator() { + + public boolean hasNext() { + return currentIterator.hasNext() || (parentIterator != null && parentIterator.hasNext()); + } + + public Object next() { + if (!hasNext()) { + throw new IllegalStateException("End of iterator has reached"); + } + return currentIterator.hasNext() ? currentIterator.next() : parentIterator.next(); + } + + public void remove() { + throw new UnsupportedOperationException(); + } + + }; + + } + + public void register(String prefix, String ns) { + map.put(prefix, ns); + } + + public NamespaceContext getParent() { + return parent; + } + + @Override + public String toString() { + StringBuffer sb = new StringBuffer(map.toString()); + if (parent != null) { + sb.append("\nParent: "); + sb.append(parent); + } + return sb.toString(); + } + } + + /** + * An implementation of the {@link java.util.Stack} API that is based on an ArrayList instead of a + * Vector, so it is not synchronized to protect against multi-threaded access. The implementation is + * therefore operates faster in environments where you do not need to worry about multiple thread contention. + *

      + * The removal order of an ArrayStack is based on insertion order: The most recently added element is + * removed first. The iteration order is not the same as the removal order. The iterator returns elements + * from the bottom up, whereas the {@link #remove()} method removes them from the top down. + *

      + * Unlike Stack, ArrayStack accepts null entries. + */ + public static class FastStack extends ArrayList { + + /** Ensure Serialization compatibility */ + private static final long serialVersionUID = 2130079159931574599L; + + /** + * Constructs a new empty ArrayStack. The initial size is controlled by ArrayList + * and is currently 10. + */ + public FastStack() { + super(); + } + + /** + * Constructs a new empty ArrayStack with an initial size. + * + * @param initialSize the initial size to use + * @throws IllegalArgumentException if the specified initial size is negative + */ + public FastStack(int initialSize) { + super(initialSize); + } + + /** + * Return true if this stack is currently empty. + *

      + * This method exists for compatibility with java.util.Stack. New users of this class should use + * isEmpty instead. + * + * @return true if the stack is currently empty + */ + public boolean empty() { + return isEmpty(); + } + + /** + * Returns the top item off of this stack without removing it. + * + * @return the top item on the stack + * @throws EmptyStackException if the stack is empty + */ + public T peek() throws EmptyStackException { + int n = size(); + if (n <= 0) { + throw new EmptyStackException(); + } else { + return get(n - 1); + } + } + + /** + * Returns the n'th item down (zero-relative) from the top of this stack without removing it. + * + * @param n the number of items down to go + * @return the n'th item on the stack, zero relative + * @throws EmptyStackException if there are not enough items on the stack to satisfy this request + */ + public T peek(int n) throws EmptyStackException { + int m = (size() - n) - 1; + if (m < 0) { + throw new EmptyStackException(); + } else { + return get(m); + } + } + + /** + * Pops the top item off of this stack and return it. + * + * @return the top item on the stack + * @throws EmptyStackException if the stack is empty + */ + public T pop() throws EmptyStackException { + int n = size(); + if (n <= 0) { + throw new EmptyStackException(); + } else { + return remove(n - 1); + } + } + + /** + * Pushes a new item onto the top of this stack. The pushed item is also returned. This is equivalent to calling + * add. + * + * @param item the item to be added + * @return the item just pushed + */ + public Object push(T item) { + add(item); + return item; + } + + /** + * Returns the top-most index for the object in the stack + * + * @param object the object to be searched for + * @return top-most index, or -1 if not found + */ + public int search(T object) { + int i = size() - 1; // Current index + while (i >= 0) { + T current = get(i); + if ((object == null && current == null) || (object != null && object.equals(current))) { + return i; + } + i--; + } + return -1; + } + + /** + * Returns the element on the top of the stack. + * + * @return the element on the top of the stack + * @throws EmptyStackException if the stack is empty + */ + public T get() { + int size = size(); + if (size == 0) { + throw new EmptyStackException(); + } + return get(size - 1); + } + + /** + * Removes the element on the top of the stack. + * + * @return the removed element + * @throws EmptyStackException if the stack is empty + */ + public T remove() { + int size = size(); + if (size == 0) { + throw new EmptyStackException(); + } + return remove(size - 1); + } + + } + +} diff --git a/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XmlTreeStreamReaderImpl.java b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XmlTreeStreamReaderImpl.java new file mode 100644 index 0000000000..f4bc357c7d --- /dev/null +++ b/branches/sca-java-2.0-M2/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/XmlTreeStreamReaderImpl.java @@ -0,0 +1,531 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.tuscany.sca.databinding.xml; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.Map; + +import javax.xml.namespace.NamespaceContext; +import javax.xml.namespace.QName; +import javax.xml.stream.Location; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; + +/** + * + * @version $Rev$ $Date$ + */ +public class XmlTreeStreamReaderImpl implements XMLStreamReader { + + protected int state; + protected XmlNodeIterator iterator; + protected XmlNode current; + + protected XMLStreamReader reader; + + /* + * we need to pass in a namespace context since when delegated, we've no + * idea of the current namespace context. So it needs to be passed on here! + */ + public XmlTreeStreamReaderImpl(XmlNode root) { + this.iterator = new XmlNodeIterator(root); + this.current = null; + this.state = START_DOCUMENT; + this.reader = null; + } + + public void close() throws XMLStreamException { + if (reader != null) { + reader.close(); + } + } + + private void checkElementState() { + if (getEventType() != START_ELEMENT && getEventType() != END_ELEMENT) { + throw new IllegalStateException(); + } + } + + private List getAttributes() { + if (current != null && current.attributes() != null) { + return current.attributes(); + } else { + return Collections.emptyList(); + } + } + + public int getAttributeCount() { + checkElementState(); + if (reader != null) { + return reader.getAttributeCount(); + } + return getAttributes().size(); + } + + public String getAttributeLocalName(int i) { + checkElementState(); + if (reader != null) { + return reader.getAttributeLocalName(i); + } + return getAttributes().get(i).getName().getLocalPart(); + } + + /** + * @param i + */ + public QName getAttributeName(int i) { + checkElementState(); + if (reader != null) { + return reader.getAttributeName(i); + } + return getAttributes().get(i).getName(); + } + + public String getAttributeNamespace(int i) { + checkElementState(); + if (reader != null) { + return reader.getAttributeNamespace(i); + } + return getAttributes().get(i).getName().getNamespaceURI(); + } + + public String getAttributePrefix(int i) { + checkElementState(); + if (reader != null) { + return reader.getAttributePrefix(i); + } + return getAttributes().get(i).getName().getPrefix(); + } + + public String getAttributeType(int i) { + if (reader != null) { + return reader.getAttributeType(i); + } + return null; // not supported + } + + public String getAttributeValue(int i) { + checkElementState(); + if (reader != null) { + return reader.getAttributeValue(i); + } + return getAttributes().get(i).getValue(); + } + + public String getAttributeValue(String nsUri, String localName) { + checkElementState(); + if (reader != null) { + return reader.getAttributeValue(nsUri, localName); + } + int count = getAttributeCount(); + String value = null; + QName attrQName; + for (int i = 0; i < count; i++) { + attrQName = getAttributeName(i); + if (nsUri == null) { + if (localName.equals(attrQName.getLocalPart())) { + value = getAttributeValue(i); + break; + } + } else { + if (localName.equals(attrQName.getLocalPart()) && nsUri.equals(attrQName.getNamespaceURI())) { + value = getAttributeValue(i); + break; + } + } + + } + + return value; + } + + public String getCharacterEncodingScheme() { + if (reader != null) { + return reader.getCharacterEncodingScheme(); + } + return "UTF-8"; + } + + public String getElementText() throws XMLStreamException { + checkElementState(); + if (reader != null) { + return reader.getElementText(); + } + return current.getValue(); + } + + public String getEncoding() { + if (reader != null) { + return reader.getEncoding(); + } + return "UTF-8"; + } + + public int getEventType() { + return state; + } + + public String getLocalName() { + checkElementState(); + if (reader != null) { + return reader.getLocalName(); + } + return current.getName().getLocalPart(); + } + + /** + */ + public Location getLocation() { + if (reader != null) { + return reader.getLocation(); + } + // return a default location + return new Location() { + public int getCharacterOffset() { + return 0; + } + + public int getColumnNumber() { + return 0; + } + + public int getLineNumber() { + return 0; + } + + public String getPublicId() { + return null; + } + + public String getSystemId() { + return null; + } + }; + } + + public QName getName() { + checkElementState(); + if (reader != null) { + return reader.getName(); + } + return current.getName(); + } + + public NamespaceContext getNamespaceContext() { + if (reader != null) { + return reader.getNamespaceContext(); + } + return iterator.getNamespaceContext(); + } + + private Map getNamespaces() { + if (current != null && current.namespaces() != null) { + return current.namespaces(); + } else { + return Collections.emptyMap(); + } + } + + public int getNamespaceCount() { + checkElementState(); + if (reader != null) { + return reader.getNamespaceCount(); + } + return getNamespaces().size(); + } + + /** + * @param i + */ + public String getNamespacePrefix(int i) { + checkElementState(); + if (reader != null) { + return reader.getNamespacePrefix(i); + } + return new ArrayList>(getNamespaces().entrySet()).get(i).getKey(); + } + + public String getNamespaceURI() { + checkElementState(); + if (reader != null) { + return reader.getNamespaceURI(); + } + return current.getName().getNamespaceURI(); + } + + public String getNamespaceURI(int i) { + checkElementState(); + if (reader != null) { + return reader.getNamespaceURI(i); + } + return new ArrayList>(getNamespaces().entrySet()).get(i).getValue(); + } + + public String getNamespaceURI(String prefix) { + if (reader != null) { + return reader.getNamespaceURI(prefix); + } + return getNamespaceContext().getNamespaceURI(prefix); + } + + public String getPIData() { + if (reader != null) { + return reader.getPIData(); + } + throw new UnsupportedOperationException("Yet to be implemented !!"); + } + + public String getPITarget() { + if (reader != null) { + return reader.getPITarget(); + } + throw new UnsupportedOperationException("Yet to be implemented !!"); + } + + public String getPrefix() { + if (reader != null) { + return reader.getPrefix(); + } + if (state == START_ELEMENT || state == END_ELEMENT) { + String prefix = current.getName().getPrefix(); + return "".equals(prefix) ? null : prefix; + } else if (state == START_DOCUMENT) { + return null; + } else { + throw new IllegalStateException("State==" + state); + } + } + + /** + * @param key + * @throws IllegalArgumentException + */ + public Object getProperty(String key) throws IllegalArgumentException { + if (reader != null) { + return reader.getProperty(key); + } + return null; + } + + public String getText() { + if (reader != null) { + return reader.getText(); + } + return current.getValue(); + } + + public char[] getTextCharacters() { + if (reader != null) { + return reader.getTextCharacters(); + } + String value = current.getValue(); + return value == null ? new char[0] : value.toCharArray(); + } + + private int copy(int sourceStart, char[] target, int targetStart, int length) { + char[] source = getTextCharacters(); + if (sourceStart > source.length) { + throw new IndexOutOfBoundsException("source start > source length"); + } + int sourceLen = source.length - sourceStart; + if (length > sourceLen) { + length = sourceLen; + } + System.arraycopy(source, sourceStart, target, targetStart, length); + return sourceLen; + } + + public int getTextCharacters(int i, char[] chars, int i1, int i2) throws XMLStreamException { + if (reader != null) { + return reader.getTextCharacters(i, chars, i1, i2); + } + return copy(i, chars, i1, i2); + } + + public int getTextLength() { + if (reader != null) { + return reader.getTextLength(); + } + return getTextCharacters().length; + } + + public int getTextStart() { + if (reader != null) { + return reader.getTextStart(); + } + return 0; + } + + public String getVersion() { + return "1.0"; + } + + public boolean hasName() { + if (reader != null) { + return reader.hasName(); + } + return current.getName() != null; + } + + /** + * @throws XMLStreamException + */ + public boolean hasNext() throws XMLStreamException { + return iterator.hasNext() || state != END_DOCUMENT || (reader != null && reader.hasNext()); + } + + public boolean hasText() { + if (reader != null) { + return reader.hasText(); + } + return current.getType() == XmlNode.Type.CHARACTERS; + } + + public boolean isAttributeSpecified(int i) { + if (reader != null) { + return reader.isAttributeSpecified(i); + } + return false; // not supported + } + + public boolean isCharacters() { + if (reader != null) { + return reader.isCharacters(); + } + return current.getType() == XmlNode.Type.CHARACTERS; + } + + public boolean isEndElement() { + if (reader != null) { + return reader.isEndElement(); + } + return getEventType() == END_ELEMENT; + } + + public boolean isStandalone() { + return true; + } + + public boolean isStartElement() { + if (reader != null) { + return reader.isStartElement(); + } + return getEventType() == START_ELEMENT; + } + + public boolean isWhiteSpace() { + if (reader != null) { + return reader.isWhiteSpace(); + } + return false; + } + + /** + * By far this should be the most important method in this class this method + * changes the state of the parser + */ + public int next() throws XMLStreamException { + if (!hasNext()) { + throw new IllegalStateException("No more events"); + } + if (reader != null) { + if (!reader.hasNext()) { + this.reader = null; + } else { + // Go to the delegation mode + state = reader.next(); + return state; + } + } + if (!iterator.hasNext()) { + state = END_DOCUMENT; + current = null; + return state; + } + current = iterator.next(); + XmlNode.Type type = current.getType(); + + int itState = iterator.getState(); + if (itState == XmlNodeIterator.END) { + if (type == XmlNode.Type.ELEMENT) { + state = END_ELEMENT; + } else { + // Ignore the pop + state = next(); + } + } + if (itState == XmlNodeIterator.START) { + if (type == XmlNode.Type.ELEMENT) { + state = START_ELEMENT; + } else if (type == XmlNode.Type.CHARACTERS) { + state = CHARACTERS; + } else if (type == XmlNode.Type.READER) { + XMLStreamReader value = current.getValue(); + this.reader = new WrappingXMLStreamReader(value); + state = reader.getEventType(); + return state; + } + } + return state; + } + + /** + * TODO implement this + * + * @throws XMLStreamException + */ + public int nextTag() throws XMLStreamException { + while (true) { + int event = next(); + if (event == START_ELEMENT || event == END_ELEMENT) { + return event; + } + } + } + + public void require(int i, String ns, String localPart) throws XMLStreamException { + if (reader != null) { + reader.require(i, ns, localPart); + return; + } + int event = getEventType(); + if (event != i) { + throw new IllegalStateException("Event type is " + event + " (!=" + i + ")"); + } + QName name = getName(); + String ns1 = name.getNamespaceURI(); + String localName1 = name.getLocalPart(); + + if (ns != null && !ns.equals(ns1)) { + throw new IllegalStateException("Namespace URI is " + ns1 + " (!=" + ns + ")"); + } + + if (localPart != null && !localPart.equals(localName1)) { + throw new IllegalStateException("Local name is " + localName1 + " (!=" + localPart + ")"); + } + + } + + public boolean standaloneSet() { + return true; + } + +} -- cgit v1.2.3