diff options
Diffstat (limited to 'branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany')
5 files changed, 767 insertions, 0 deletions
diff --git a/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/AxiomHelper.java b/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/AxiomHelper.java new file mode 100644 index 0000000000..1c5351bc70 --- /dev/null +++ b/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/AxiomHelper.java @@ -0,0 +1,104 @@ +/* + * 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.sdo2om; + +import javax.xml.namespace.QName; + +import org.apache.axiom.om.OMAbstractFactory; +import org.apache.axiom.om.OMDataSource; +import org.apache.axiom.om.OMElement; +import org.apache.axiom.om.OMFactory; +import org.apache.axiom.om.OMNamespace; +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +/** + * Helper for AXIOM + * + * @version $Rev$ $Date$ + */ +public class AxiomHelper { + + private static final String DEFAULT_PREFIX = "_ns_"; + + private AxiomHelper() { + } + + /** + * @param context + * @param element + */ + public static void adjustElementName(TransformationContext context, OMElement element) { + if (context != null) { + DataType dataType = context.getTargetDataType(); + Object logical = dataType == null ? null : dataType.getLogical(); + if (!(logical instanceof XMLType)) { + return; + } + XMLType xmlType = (XMLType)logical; + if (xmlType.isElement() && !xmlType.getElementName().equals(element.getQName())) { + // FIXME:: Throw expection or switch to the new Element? + OMFactory factory = OMAbstractFactory.getOMFactory(); + QName name = xmlType.getElementName(); + OMNamespace namespace = factory.createOMNamespace(name.getNamespaceURI(), name.getPrefix()); + element.setNamespace(namespace); + element.setLocalName(name.getLocalPart()); + } + } + } + + public static OMElement createOMElement(OMFactory factory, QName element) { + String localName = element.getLocalPart(); + OMNamespace ns = createOMNamespace(factory, element); + + return factory.createOMElement(localName, ns); + + } + + public static OMElement createOMElement(OMFactory factory, QName element, OMDataSource dataSource) { + String localName = element.getLocalPart(); + OMNamespace ns = createOMNamespace(factory, element); + + return factory.createOMElement(dataSource, localName, ns); + + } + + /** + * @param factory + * @param name + * @return + */ + public static OMNamespace createOMNamespace(OMFactory factory, QName name) { + String namespaceURI = name.getNamespaceURI(); + String prefix = name.getPrefix(); + + OMNamespace ns = null; + if (namespaceURI.length() != 0) { + // Qualified Element: we need an OMNamespace + if (prefix.length() == 0) { + // The prefix does not appear to be specified, let's create one + prefix = DEFAULT_PREFIX; + } + ns = factory.createOMNamespace(namespaceURI, prefix); + } + return ns; + } +} diff --git a/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/DataObject2OMElement.java b/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/DataObject2OMElement.java new file mode 100644 index 0000000000..ef6b5b0bf2 --- /dev/null +++ b/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/DataObject2OMElement.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.sdo2om; + +import static org.apache.tuscany.sca.databinding.sdo.SDODataBinding.ROOT_ELEMENT; + +import javax.xml.namespace.QName; + +import org.apache.axiom.om.OMAbstractFactory; +import org.apache.axiom.om.OMElement; +import org.apache.axiom.om.OMFactory; +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.sdo.SDOContextHelper; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.util.XMLType; + +import commonj.sdo.DataObject; +import commonj.sdo.helper.HelperContext; +import commonj.sdo.helper.XMLDocument; + +/** + * SDO DataObject --> AXIOM OMElement transformer + * + * @version $Rev$ $Date$ + */ +public class DataObject2OMElement extends BaseTransformer<DataObject, OMElement> implements + PullTransformer<DataObject, OMElement> { + + public OMElement transform(DataObject source, TransformationContext context) { + HelperContext helperContext = SDOContextHelper.getHelperContext(context); + OMFactory factory = OMAbstractFactory.getOMFactory(); + + QName name = ROOT_ELEMENT; + if (context != null) { + DataType dataType = context.getTargetDataType(); + Object logical = dataType == null ? null : dataType.getLogical(); + if (logical instanceof XMLType) { + XMLType xmlType = (XMLType)logical; + if (xmlType.isElement()) { + name = xmlType.getElementName(); + } + } + } + + XMLDocument document = helperContext.getXMLHelper().createDocument(source, + name.getNamespaceURI(), + name.getLocalPart()); + SDODataSource dataSource = new SDODataSource(document, helperContext); + OMElement element = AxiomHelper.createOMElement(factory, name, dataSource); + return element; + } + + @Override + public Class getSourceType() { + return DataObject.class; + } + + @Override + public Class getTargetType() { + return OMElement.class; + } + + @Override + public int getWeight() { + return 10; + } + +} diff --git a/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/DataObjectSerializer.java b/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/DataObjectSerializer.java new file mode 100644 index 0000000000..36b775b123 --- /dev/null +++ b/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/DataObjectSerializer.java @@ -0,0 +1,427 @@ +/* + * 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.sdo2om; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; + +import javax.xml.namespace.NamespaceContext; +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.tuscany.sca.databinding.TransformationContext; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sdo.impl.AttributeImpl; +import org.apache.tuscany.sdo.impl.ReferenceImpl; +import org.apache.tuscany.sdo.api.SDOUtil; +import org.eclipse.emf.ecore.EClass; +import org.eclipse.emf.ecore.EDataType; +import org.eclipse.emf.ecore.EReference; +import org.eclipse.emf.ecore.EStructuralFeature; +import org.eclipse.emf.ecore.util.ExtendedMetaData; + +import commonj.sdo.DataObject; +import commonj.sdo.Property; +import commonj.sdo.Sequence; +import commonj.sdo.Type; +import commonj.sdo.helper.HelperContext; +import commonj.sdo.helper.XMLDocument; +import commonj.sdo.helper.XSDHelper; + +public class DataObjectSerializer { + private static final String ELEMENT_TEXT = "Text Element"; + + // static final String ELEMENT_TEXT = "Element Text"; + private static final QName XSI_TYPE_QNAME = new QName("http://www.w3.org/2001/XMLSchema-instance", "type", "xsi"); + + private Map<String, String> declaredNamespaceMap = new HashMap<String, String>(); + + private NameSpaceContextImpl namespaceContext = new NameSpaceContextImpl(); + + private DataObject rootDataObject; + + private String rootElementName; + + private String rootElementURI; + + private XMLStreamWriter xmlWriter; + + private XSDHelper xsdHelper; + + public DataObjectSerializer(DataObject rootObject, + XMLStreamWriter xmlWriter, + HelperContext helperCtx, + TransformationContext context) { + this.xmlWriter = xmlWriter; + this.rootDataObject = rootObject; + this.xsdHelper = helperCtx.getXSDHelper(); + this.rootElementName = xsdHelper.getLocalName(rootObject.getType()); + this.rootElementURI = rootDataObject.getType().getURI(); + + if (context != null) { + DataType dataType = context.getTargetDataType(); + Object targetQName = dataType == null ? null : dataType.getLogical(); + if (targetQName instanceof QName) { + QName name = (QName)targetQName; + this.rootElementName = name.getLocalPart(); + this.rootElementURI = name.getNamespaceURI(); + } + } + + } + + // 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); + // } + // } + + public DataObjectSerializer(XMLDocument sourceDocument, XMLStreamWriter xmlWriter, HelperContext helperCtx) { + this.xmlWriter = xmlWriter; + this.rootDataObject = sourceDocument.getRootObject(); + this.rootElementName = sourceDocument.getRootElementName(); + this.rootElementURI = sourceDocument.getRootElementURI(); + this.xsdHelper = helperCtx.getXSDHelper(); + } + + protected class NameSpaceContextImpl implements NamespaceContext { + private int counter; + + private Map<String, String> prefixToNamespaceMapping = new HashMap<String, String>(); + + public NameSpaceContextImpl() { + prefixToNamespaceMapping.put("xml", "http://www.w3.org/XML/1998/namespace"); + prefixToNamespaceMapping.put("xmlns", "http://www.w3.org/2000/xmlns/"); + prefixToNamespaceMapping.put("xsi", "http://www.w3.org/2001/XMLSchema-instance"); + } + + public synchronized QName createQName(String nsURI, String name) { + String prefix = nsURI != null ? (String)getPrefix(nsURI) : null; + if (prefix == null && nsURI != null && !nsURI.equals("")) { + prefix = "p" + (counter++); + } + if (prefix == null) { + prefix = ""; + } + if (nsURI != null) { + prefixToNamespaceMapping.put(prefix, nsURI); + declaredNamespaceMap.put(prefix, nsURI); + } + return new QName(nsURI, name, prefix); + } + + public String getNamespaceURI(String prefix) { + if (prefix == null) { + throw new IllegalArgumentException("Prefix is null"); + } + + String ns = prefixToNamespaceMapping.get(prefix); + if (ns != null) { + return ns; + } else { + return null; + } + } + + public String getPrefix(String nsURI) { + if (nsURI == null) { + throw new IllegalArgumentException("Namespace is null"); + } + for (Iterator i = prefixToNamespaceMapping.entrySet().iterator(); i.hasNext();) { + Map.Entry entry = (Map.Entry)i.next(); + if (entry.getValue().equals(nsURI)) { + return (String)entry.getKey(); + } + } + return null; + } + + public Iterator getPrefixes(String nsURI) { + List prefixList = new ArrayList(); + for (Iterator i = prefixToNamespaceMapping.entrySet().iterator(); i.hasNext();) { + Map.Entry entry = (Map.Entry)i.next(); + if (entry.getValue().equals(nsURI)) { + prefixList.add(entry.getKey()); + } + } + return prefixList.iterator(); + } + + public void registerMapping(String prefix, String nsURI) { + prefixToNamespaceMapping.put(prefix, nsURI); + } + + public void removeMapping(String prefix) { + prefixToNamespaceMapping.remove(prefix); + } + } + + protected static class NameValuePair implements Map.Entry { + private Object key; + + private Object value; + + public NameValuePair(Object key, Object value) { + this.key = key; + this.value = value; + } + + public Object getKey() { + return key; + } + + public Object getValue() { + return value; + } + + public Object setValue(Object value) { + Object v = this.value; + this.value = value; + return v; + } + + } + + private static boolean isTransient(Property property, Object type) { + // HACK: We need some SDOUtil extension to understand a property is + // derived + EStructuralFeature feature = (EStructuralFeature)property; + if (ExtendedMetaData.INSTANCE.getGroup(feature) != null) { + return false; + } + feature = ExtendedMetaData.INSTANCE.getAffiliation((EClass)type, feature); + if (feature != null && feature != property) { + return false; + } + if (property instanceof ReferenceImpl) { + ReferenceImpl r = (ReferenceImpl)property; + if (r.isTransient()) { + return true; + } + EReference opposite = r.getEOpposite(); + if (opposite != null && opposite.isContainment()) { + return true; + } + } else if (property instanceof AttributeImpl) { + AttributeImpl a = (AttributeImpl)property; + if (a.isTransient()) { + return true; + } + EDataType d = (EDataType)a.getEType(); + if (!d.isSerializable()) { + return true; + } + } + return false; + } + + private void addListValue(List<NameValuePair> propertyList, + List<DataObject> children, + Property property, + List objList) throws XMLStreamException { + if (objList != null) { + for (int j = 0; j < objList.size(); j++) { + Object object = objList.get(j); + addSingleValue(propertyList, children, property, object); + } + } + } + + private void addProperty(List<NameValuePair> propertyList, + List<DataObject> children, + Property property, + Object value, + DataObject dataObject) throws XMLStreamException { + + if (property.isMany() && property.getContainingType().isOpen() && value instanceof Sequence) { + addSequenceValue(propertyList, children, (Sequence)value); + } else if (SDOUtil.isMany(property, dataObject) && value instanceof List) { + addListValue(propertyList, children, property, (List)value); + } else { + // Complex Type + addSingleValue(propertyList, children, property, value); + } + } + + private void addSequenceValue(List<NameValuePair> elements, List<DataObject> children, Sequence seq) + throws XMLStreamException { + if (seq != null && seq.size() > 0) { + for (int j = 0; j < seq.size(); j++) { + Object o = seq.getValue(j); + Property p = seq.getProperty(j); + addSingleValue(elements, children, p, o); + } + } + } + + private void addSingleValue(List<NameValuePair> propertyList, + List<DataObject> children, + Property property, + Object value) throws XMLStreamException { + String uri = xsdHelper.getNamespaceURI(property); + String name = xsdHelper.getLocalName(property); + QName qname = namespaceContext.createQName(uri, name); + Type propertyType = property.getType(); + + if (property.getName().equals("value") && uri == null && name.equals(":0")) { + propertyList.add(new NameValuePair(ELEMENT_TEXT, value.toString())); + } else if (value == null) { + NameValuePair entry = new NameValuePair(qname, null); + propertyList.add(entry); + } else if (propertyType.isDataType()) { + NameValuePair entry = new NameValuePair(qname, SDOUtil.convertToString(propertyType, value)); + propertyList.add(entry); + } else { + children.add((DataObject)value); + } + } + + private void registerNamespace(String prefix, String uri) { + if (!uri.equals(namespaceContext.getNamespaceURI(prefix))) { + namespaceContext.registerMapping(prefix, uri); + declaredNamespaceMap.put(prefix, uri); + } + } + + public void serialize() throws XMLStreamException { + xmlWriter.setNamespaceContext(namespaceContext); + writeDataObject(rootDataObject, rootElementName, rootElementURI); + xmlWriter.flush(); + } + + private void writeDataObject(DataObject obj, String elementName, String elementURI) throws XMLStreamException { + List<NameValuePair> elementList = new ArrayList<NameValuePair>(); + List<DataObject> children = new ArrayList<DataObject>(); + List<NameValuePair> attributes = new ArrayList<NameValuePair>(); + + String typeName; + QName realTypeName = null; + + if (elementName != null) { + realTypeName = namespaceContext.createQName(elementURI, elementName); + String typeQName = realTypeName.getPrefix() + ":" + realTypeName.getLocalPart(); + declaredNamespaceMap.put(realTypeName.getPrefix(), realTypeName.getNamespaceURI()); + attributes.add(new NameValuePair(XSI_TYPE_QNAME, typeQName)); + registerNamespace(XSI_TYPE_QNAME.getPrefix(), XSI_TYPE_QNAME.getNamespaceURI()); + } else { + + typeName = xsdHelper.getLocalName(obj.getContainmentProperty()); + realTypeName = namespaceContext.createQName(obj.getType().getURI(), typeName); + registerNamespace(realTypeName.getPrefix(), realTypeName.getNamespaceURI()); + } + + registerNamespace(realTypeName.getPrefix(), realTypeName.getNamespaceURI()); + + if (obj.getType().isSequenced()) { + Sequence sequence = obj.getSequence(); + for (int i = 0; i < sequence.size(); i++) { + Property property = sequence.getProperty(i); + Object value = sequence.getValue(i); + if (property == null) { + elementList.add(new NameValuePair(ELEMENT_TEXT, value)); + } else { + addProperty(elementList, children, property, value, obj); + } + } + + // Attributes are not in the sequence + List properties = obj.getInstanceProperties(); + for (Iterator i = properties.iterator(); i.hasNext();) { + Property property = (Property)i.next(); + if (xsdHelper.isAttribute(property) && obj.isSet(property) && !isTransient(property, obj.getType())) { + Object value = obj.get(property); + QName name = + namespaceContext.createQName(xsdHelper.getNamespaceURI(property), xsdHelper + .getLocalName(property)); + attributes.add(new NameValuePair(name, SDOUtil.convertToString(property.getType(), value))); + } + } + } else { + Iterator i = obj.getInstanceProperties().iterator(); + while (i.hasNext()) { + Property p = (Property)i.next(); + if (obj.isSet(p) && !isTransient(p, obj.getType())) { + Object value = obj.get(p); + if (xsdHelper.isAttribute(p)) { + QName name = + namespaceContext.createQName(xsdHelper.getNamespaceURI(p), xsdHelper.getLocalName(p)); + attributes.add(new NameValuePair(name, SDOUtil.convertToString(p.getType(), value))); + } else { + addProperty(elementList, children, p, value, obj); + } + } + } + } + + String prefix = realTypeName.getPrefix(); + String nameSpaceName = realTypeName.getNamespaceURI(); + + if (nameSpaceName != null) { + String writerPrefix = xmlWriter.getPrefix(nameSpaceName); + if (writerPrefix != null) { + xmlWriter.writeStartElement(nameSpaceName, realTypeName.getLocalPart()); + } else { + if (prefix != null) { + xmlWriter.writeStartElement(prefix, realTypeName.getLocalPart(), nameSpaceName); + xmlWriter.writeNamespace(prefix, nameSpaceName); + xmlWriter.setPrefix(prefix, nameSpaceName); + } else { + xmlWriter.writeStartElement(nameSpaceName, realTypeName.getLocalPart()); + xmlWriter.writeDefaultNamespace(nameSpaceName); + xmlWriter.setDefaultNamespace(nameSpaceName); + } + } + } else { + xmlWriter.writeStartElement(realTypeName.getLocalPart()); + } + + for (NameValuePair pair : attributes) { + QName name = (QName)pair.getKey(); + assert namespaceContext.getPrefix(name.getPrefix()).equals(name.getNamespaceURI()); + xmlWriter.writeAttribute(name.getPrefix(), name.getNamespaceURI(), name.getLocalPart(), (String)pair + .getValue()); + } + + for (NameValuePair pair : elementList) { + if (ELEMENT_TEXT.equals(pair.getKey().toString())) { + xmlWriter.writeCharacters((String)pair.getValue()); + } else { + QName name = (QName)pair.getKey(); + xmlWriter.writeStartElement(name.getPrefix(), name.getLocalPart(), name.getNamespaceURI()); + xmlWriter.writeCharacters((String)pair.getValue()); + xmlWriter.writeEndElement(); + } + } + + for (DataObject child : children) { + writeDataObject(child, null, null); + } + xmlWriter.writeEndElement(); + + } + +} diff --git a/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/SDODataSource.java b/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/SDODataSource.java new file mode 100644 index 0000000000..f461a80029 --- /dev/null +++ b/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/SDODataSource.java @@ -0,0 +1,85 @@ +/* + * 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.sdo2om; + +import static org.apache.tuscany.sca.databinding.sdo.SDODataBinding.ROOT_ELEMENT; + +import java.io.IOException; +import java.io.OutputStream; +import java.io.Writer; + +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.axiom.om.OMDataSource; +import org.apache.axiom.om.OMOutputFormat; +import org.apache.axiom.om.impl.serialize.StreamingOMSerializer; +import org.apache.tuscany.sdo.api.XMLStreamHelper; +import org.apache.tuscany.sdo.api.SDOUtil; + +import commonj.sdo.DataObject; +import commonj.sdo.helper.HelperContext; +import commonj.sdo.helper.XMLDocument; + +public class SDODataSource implements OMDataSource { + private HelperContext helperContext; + private XMLDocument sourceDocument; + + public SDODataSource(XMLDocument source, HelperContext helperContext) { + this.sourceDocument = source; + this.helperContext = helperContext; + } + + public SDODataSource(DataObject obj, HelperContext helperContext) { + this.helperContext = helperContext; + this.sourceDocument = + helperContext.getXMLHelper().createDocument(obj, + ROOT_ELEMENT.getNamespaceURI(), + ROOT_ELEMENT.getLocalPart()); + } + + public XMLStreamReader getReader() throws XMLStreamException { + XMLStreamHelper streamHelper = SDOUtil.createXMLStreamHelper(helperContext); + return streamHelper.createXMLStreamReader(sourceDocument); + } + + public void serialize(XMLStreamWriter xmlWriter) throws XMLStreamException { + StreamingOMSerializer serializer = new StreamingOMSerializer(); + serializer.serialize(getReader(), xmlWriter); + } + + public void serialize(OutputStream output, OMOutputFormat format) throws XMLStreamException { + try { + helperContext.getXMLHelper().save(sourceDocument, output, null); + } catch (Exception e) { + throw new XMLStreamException(e); + } + } + + public void serialize(Writer writer, OMOutputFormat format) throws XMLStreamException { + try { + helperContext.getXMLHelper().save(sourceDocument, writer, null); + } catch (IOException e) { + throw new XMLStreamException(e); + } + } + +} diff --git a/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/XMLDocument2OMElement.java b/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/XMLDocument2OMElement.java new file mode 100644 index 0000000000..1f3384efd8 --- /dev/null +++ b/branches/sca-java-0.99/modules/databinding-sdo-axiom/src/main/java/org/apache/tuscany/sca/databinding/sdo2om/XMLDocument2OMElement.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.sdo2om; + +import javax.xml.namespace.QName; + +import org.apache.axiom.om.OMAbstractFactory; +import org.apache.axiom.om.OMElement; +import org.apache.axiom.om.OMFactory; +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.sdo.SDOContextHelper; + +import commonj.sdo.helper.HelperContext; +import commonj.sdo.helper.XMLDocument; + +/** + * SDO XMLDocument --> AXIOM OMElement transformer + * @version $Rev$ $Date$ + */ +public class XMLDocument2OMElement extends BaseTransformer<XMLDocument, OMElement> implements + PullTransformer<XMLDocument, OMElement> { + + public OMElement transform(XMLDocument source, TransformationContext context) { + HelperContext helperContext = SDOContextHelper.getHelperContext(context); + SDODataSource dataSource = new SDODataSource(source, helperContext); + OMFactory factory = OMAbstractFactory.getOMFactory(); + QName name = new QName(source.getRootElementURI(), source.getRootElementName()); + OMElement element = AxiomHelper.createOMElement(factory, name, dataSource); + return element; + } + + @Override + public Class getSourceType() { + return XMLDocument.class; + } + + @Override + public Class getTargetType() { + return OMElement.class; + } + + @Override + public int getWeight() { + return 10; + } + +} |