diff options
Diffstat (limited to 'branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany')
6 files changed, 741 insertions, 48 deletions
diff --git a/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/Constants.java b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/Constants.java new file mode 100644 index 0000000000..4cf20125b9 --- /dev/null +++ b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/Constants.java @@ -0,0 +1,30 @@ +/* + * 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.contribution; + +/** + * Constants used in SCA contribution. + * + * @version $Rev$ $Date$ + */ +public interface Constants { + String SCA10_NS = "http://www.osoa.org/xmlns/sca/1.0"; + String SCA10_TUSCANY_NS = "http://tuscany.apache.org/xmlns/sca/1.0"; +} diff --git a/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultStAXArtifactProcessorExtensionPoint.java b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultStAXArtifactProcessorExtensionPoint.java index bfd0be4541..bb9f07d946 100644 --- a/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultStAXArtifactProcessorExtensionPoint.java +++ b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultStAXArtifactProcessorExtensionPoint.java @@ -60,6 +60,7 @@ public class DefaultStAXArtifactProcessorExtensionPoint extends private MonitorFactory monitorFactory; private boolean loaded; private StAXArtifactProcessor<Object> extensibleStAXProcessor; + private StAXAttributeProcessor<Object> extensibleStAXAttributeProcessor; private Monitor monitor = null; /** @@ -75,6 +76,9 @@ public class DefaultStAXArtifactProcessorExtensionPoint extends if (monitorFactory != null) this.monitor = monitorFactory.createMonitor(); this.extensibleStAXProcessor = new ExtensibleStAXArtifactProcessor(this, inputFactory, outputFactory, this.monitor); + + StAXAttributeProcessorExtensionPoint attributeExtensionPoint = extensionPoints.getExtensionPoint(StAXAttributeProcessorExtensionPoint.class); + this.extensibleStAXAttributeProcessor = new ExtensibleStAXAttributeProcessor(attributeExtensionPoint ,inputFactory, outputFactory, this.monitor); } /** @@ -182,7 +186,7 @@ public class DefaultStAXArtifactProcessorExtensionPoint extends StAXArtifactProcessor processor = new LazyStAXArtifactProcessor(artifactType, modelTypeName, factoryName, processorDeclaration, extensionPoints, modelFactories, - extensibleStAXProcessor, monitor); + extensibleStAXProcessor,extensibleStAXAttributeProcessor, monitor); addArtifactProcessor(processor); } @@ -203,6 +207,7 @@ public class DefaultStAXArtifactProcessorExtensionPoint extends private StAXArtifactProcessor processor; private Class<?> modelType; private StAXArtifactProcessor<Object> extensionProcessor; + private StAXAttributeProcessor<Object> extensionAttributeProcessor; private Monitor monitor; LazyStAXArtifactProcessor(QName artifactType, @@ -212,6 +217,7 @@ public class DefaultStAXArtifactProcessorExtensionPoint extends ExtensionPointRegistry extensionPoints, ModelFactoryExtensionPoint modelFactories, StAXArtifactProcessor<Object> extensionProcessor, + StAXAttributeProcessor<Object> extensionAttributeProcessor, Monitor monitor) { this.extensionPoints = extensionPoints; @@ -220,6 +226,7 @@ public class DefaultStAXArtifactProcessorExtensionPoint extends this.factoryName = factoryName; this.processorDeclaration = processorDeclaration; this.extensionProcessor = extensionProcessor; + this.extensionAttributeProcessor = extensionAttributeProcessor; this.monitor = monitor; } @@ -279,53 +286,66 @@ public class DefaultStAXArtifactProcessorExtensionPoint extends // Load and instantiate the processor class try { - Class<StAXArtifactProcessor> processorClass = - (Class<StAXArtifactProcessor>)processorDeclaration.loadClass(); - try { - Constructor<StAXArtifactProcessor> constructor = - processorClass.getConstructor(ModelFactoryExtensionPoint.class, Monitor.class); - processor = constructor.newInstance(modelFactories, monitor); - } catch (NoSuchMethodException e) { - try { - Constructor<StAXArtifactProcessor> constructor = - processorClass.getConstructor(ExtensionPointRegistry.class, Monitor.class); - processor = constructor.newInstance(extensionPoints, monitor); - } catch (NoSuchMethodException e1) { - try { - Constructor<StAXArtifactProcessor> constructor = - processorClass.getConstructor(ModelFactoryExtensionPoint.class, StAXArtifactProcessor.class, Monitor.class); - processor = constructor.newInstance(modelFactories, extensionProcessor, monitor); - } catch (NoSuchMethodException e2) { - try { - Constructor<StAXArtifactProcessor> constructor = - processorClass.getConstructor(ExtensionPointRegistry.class, StAXArtifactProcessor.class, Monitor.class); - processor = constructor.newInstance(extensionPoints, extensionProcessor, monitor); - } catch (NoSuchMethodException e3) { - try { - Constructor<StAXArtifactProcessor> constructor = - processorClass.getConstructor(ModelFactoryExtensionPoint.class); - processor = constructor.newInstance(modelFactories); - } catch (NoSuchMethodException e4) { - try { - Constructor<StAXArtifactProcessor> constructor = - processorClass.getConstructor(ExtensionPointRegistry.class); - processor = constructor.newInstance(extensionPoints); - } catch (NoSuchMethodException e4a) { - try { - Constructor<StAXArtifactProcessor> constructor = - processorClass.getConstructor(ModelFactoryExtensionPoint.class, StAXArtifactProcessor.class); - processor = constructor.newInstance(modelFactories, extensionProcessor); - } catch (NoSuchMethodException e5) { - Constructor<StAXArtifactProcessor> constructor = - processorClass.getConstructor(ExtensionPointRegistry.class, StAXArtifactProcessor.class); - processor = constructor.newInstance(extensionPoints, extensionProcessor); - } - } - } - } - } - } - } + Class<StAXArtifactProcessor> processorClass = + (Class<StAXArtifactProcessor>)processorDeclaration.loadClass(); + try { + Constructor<StAXArtifactProcessor> constructor = + processorClass.getConstructor(ModelFactoryExtensionPoint.class, Monitor.class); + processor = constructor.newInstance(modelFactories, monitor); + } catch (NoSuchMethodException e) { + try { + Constructor<StAXArtifactProcessor> constructor = + processorClass.getConstructor(ExtensionPointRegistry.class, Monitor.class); + processor = constructor.newInstance(extensionPoints, monitor); + } catch (NoSuchMethodException e1) { + try { + Constructor<StAXArtifactProcessor> constructor = + processorClass.getConstructor(ModelFactoryExtensionPoint.class, StAXArtifactProcessor.class, Monitor.class); + processor = constructor.newInstance(modelFactories, extensionProcessor, monitor); + } catch (NoSuchMethodException e2) { + try { + Constructor<StAXArtifactProcessor> constructor = + processorClass.getConstructor(ModelFactoryExtensionPoint.class, StAXArtifactProcessor.class, StAXAttributeProcessor.class, Monitor.class); + processor = constructor.newInstance(modelFactories, extensionProcessor, extensionAttributeProcessor, monitor); + } catch (NoSuchMethodException e2a) { + try { + Constructor<StAXArtifactProcessor> constructor = + processorClass.getConstructor(ExtensionPointRegistry.class, StAXArtifactProcessor.class, Monitor.class); + processor = constructor.newInstance(extensionPoints, extensionProcessor, monitor); + } catch (NoSuchMethodException e3) { + try { + Constructor<StAXArtifactProcessor> constructor = + processorClass.getConstructor(ExtensionPointRegistry.class, StAXArtifactProcessor.class, StAXAttributeProcessor.class, Monitor.class); + processor = constructor.newInstance(extensionPoints, extensionProcessor, extensionAttributeProcessor, monitor); + } catch (NoSuchMethodException e3a) { + + try { + Constructor<StAXArtifactProcessor> constructor = + processorClass.getConstructor(ModelFactoryExtensionPoint.class); + processor = constructor.newInstance(modelFactories); + } catch (NoSuchMethodException e4) { + try { + Constructor<StAXArtifactProcessor> constructor = + processorClass.getConstructor(ExtensionPointRegistry.class); + processor = constructor.newInstance(extensionPoints); + } catch (NoSuchMethodException e4a) { + try { + Constructor<StAXArtifactProcessor> constructor = + processorClass.getConstructor(ModelFactoryExtensionPoint.class, StAXArtifactProcessor.class); + processor = constructor.newInstance(modelFactories, extensionProcessor); + } catch (NoSuchMethodException e5) { + Constructor<StAXArtifactProcessor> constructor = + processorClass.getConstructor(ExtensionPointRegistry.class, StAXArtifactProcessor.class); + processor = constructor.newInstance(extensionPoints, extensionProcessor); + } + } + } + } + } + } + } + } + } } catch (Exception e) { IllegalStateException ie = new IllegalStateException(e); error("IllegalStateException", processor, ie); diff --git a/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultStAXAttributeProcessorExtensionPoint.java b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultStAXAttributeProcessorExtensionPoint.java new file mode 100644 index 0000000000..d81e236b40 --- /dev/null +++ b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultStAXAttributeProcessorExtensionPoint.java @@ -0,0 +1,327 @@ +/* + * 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.contribution.processor; + +import java.io.IOException; +import java.lang.reflect.Constructor; +import java.util.Map; +import java.util.Set; + +import javax.xml.namespace.QName; +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 org.apache.tuscany.sca.assembly.builder.impl.ProblemImpl; +import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.contribution.service.ContributionReadException; +import org.apache.tuscany.sca.contribution.service.ContributionResolveException; +import org.apache.tuscany.sca.contribution.service.ContributionWriteException; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.UtilityExtensionPoint; +import org.apache.tuscany.sca.extensibility.ServiceDeclaration; +import org.apache.tuscany.sca.extensibility.ServiceDiscovery; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.monitor.MonitorFactory; +import org.apache.tuscany.sca.monitor.Problem; +import org.apache.tuscany.sca.monitor.Problem.Severity; + +/** + * The default implementation of an extension point for StAX artifact processors. + * + * @version $Rev$ $Date$ + */ +public class DefaultStAXAttributeProcessorExtensionPoint extends + DefaultArtifactProcessorExtensionPoint<StAXAttributeProcessor> implements StAXAttributeProcessorExtensionPoint { + + private ExtensionPointRegistry extensionPoints; + private ModelFactoryExtensionPoint modelFactories; + private StAXAttributeProcessor<Object> extensibleStAXAttributeProcessor; + private boolean loaded; + private Monitor monitor = null; + + /** + * Constructs a new extension point. + */ + public DefaultStAXAttributeProcessorExtensionPoint(ExtensionPointRegistry extensionPoints) { + this.extensionPoints = extensionPoints; + this.modelFactories = extensionPoints.getExtensionPoint(ModelFactoryExtensionPoint.class); + XMLInputFactory inputFactory = modelFactories.getFactory(XMLInputFactory.class); + XMLOutputFactory outputFactory = modelFactories.getFactory(XMLOutputFactory.class); + UtilityExtensionPoint utilities = this.extensionPoints.getExtensionPoint(UtilityExtensionPoint.class); + MonitorFactory monitorFactory = utilities.getUtility(MonitorFactory.class); + if (monitorFactory != null) { + this.monitor = monitorFactory.createMonitor(); + } + this.extensibleStAXAttributeProcessor = new ExtensibleStAXAttributeProcessor(this, inputFactory, outputFactory, this.monitor); + } + + /** + * Report a exception. + * + * @param problems + * @param message + * @param model + */ + private void error(String message, Object model, Exception ex) { + if (monitor != null) { + Problem problem = new ProblemImpl(this.getClass().getName(), "contribution-validation-messages", Severity.ERROR, model, message, ex); + monitor.problem(problem); + } + } + + public void addArtifactProcessor(StAXAttributeProcessor artifactProcessor) { + if (artifactProcessor.getArtifactType() != null) { + processorsByArtifactType.put((Object)artifactProcessor.getArtifactType(), artifactProcessor); + } + if (artifactProcessor.getModelType() != null) { + processorsByModelType.put(artifactProcessor.getModelType(), artifactProcessor); + } + } + + public void removeArtifactProcessor(StAXAttributeProcessor artifactProcessor) { + if (artifactProcessor.getArtifactType() != null) { + processorsByArtifactType.remove((Object)artifactProcessor.getArtifactType()); + } + if (artifactProcessor.getModelType() != null) { + processorsByModelType.remove(artifactProcessor.getModelType()); + } + } + + @Override + public StAXAttributeProcessor getProcessor(Class<?> modelType) { + loadArtifactProcessors(); + return super.getProcessor(modelType); + } + + @Override + public StAXAttributeProcessor getProcessor(Object artifactType) { + loadArtifactProcessors(); + return super.getProcessor(artifactType); + } + + /** + * Returns a QName object from a QName expressed as {ns}name + * or ns#name. + * + * @param qname + * @return + */ + private static QName getQName(String qname) { + if (qname == null) { + return null; + } + qname = qname.trim(); + if (qname.startsWith("{")) { + int h = qname.indexOf('}'); + if (h != -1) { + return new QName(qname.substring(1, h), qname.substring(h + 1)); + } + } else { + int h = qname.indexOf('#'); + if (h != -1) { + return new QName(qname.substring(0, h), qname.substring(h + 1)); + } + } + throw new IllegalArgumentException("Invalid qname: "+qname); + } + + /** + * Lazily load artifact processors registered in the extension point. + */ + private void loadArtifactProcessors() { + if (loaded) + return; + + // Get the processor service declarations + Set<ServiceDeclaration> processorDeclarations; + try { + processorDeclarations = ServiceDiscovery.getInstance().getServiceDeclarations(StAXAttributeProcessor.class); + } catch (IOException e) { + IllegalStateException ie = new IllegalStateException(e); + error("IllegalStateException", extensibleStAXAttributeProcessor, ie); + throw ie; + } + + for (ServiceDeclaration processorDeclaration : processorDeclarations) { + Map<String, String> attributes = processorDeclaration.getAttributes(); + + // Load a StAX artifact processor + + // Get the model QName + QName artifactType = getQName(attributes.get("qname")); + + // Get the model class name + String modelTypeName = attributes.get("model"); + + // Get the model factory class name + String factoryName = attributes.get("factory"); + + // Create a processor wrapper and register it + StAXAttributeProcessor processor = + new LazyStAXAttributeProcessor(artifactType, modelTypeName, factoryName, + processorDeclaration, extensionPoints, modelFactories, + extensibleStAXAttributeProcessor, monitor); + addArtifactProcessor(processor); + } + + loaded = true; + } + + /** + * A wrapper around an Artifact processor class allowing lazy loading and + * initialization of artifact processors. + */ + private static class LazyStAXAttributeProcessor implements StAXAttributeProcessor { + + private ExtensionPointRegistry extensionPoints; + private QName artifactType; + private String modelTypeName; + private String factoryName; + private ServiceDeclaration processorDeclaration; + private StAXAttributeProcessor processor; + private Class<?> modelType; + private StAXAttributeProcessor<Object> extensionProcessor; + private Monitor monitor; + + LazyStAXAttributeProcessor(QName artifactType, + String modelTypeName, + String factoryName, + ServiceDeclaration processorDeclaration, + ExtensionPointRegistry extensionPoints, + ModelFactoryExtensionPoint modelFactories, + StAXAttributeProcessor<Object> extensionProcessor, + Monitor monitor) { + + this.extensionPoints = extensionPoints; + this.artifactType = artifactType; + this.modelTypeName = modelTypeName; + this.factoryName = factoryName; + this.processorDeclaration = processorDeclaration; + this.extensionProcessor = extensionProcessor; + this.monitor = monitor; + } + + public QName getArtifactType() { + return artifactType; + } + + private void error(String message, Object model, Exception ex) { + if (monitor != null) { + Problem problem = new ProblemImpl(this.getClass().getName(), "contribution-validation-messages", Severity.ERROR, model, message, ex); + monitor.problem(problem); + } + } + + @SuppressWarnings("unchecked") + private StAXAttributeProcessor getProcessor() { + if (processor == null) { + ModelFactoryExtensionPoint modelFactories = extensionPoints.getExtensionPoint(ModelFactoryExtensionPoint.class); + + // Load and instantiate the processor class + try { + Class<StAXAttributeProcessor> processorClass = + (Class<StAXAttributeProcessor>)processorDeclaration.loadClass(); + try { + Constructor<StAXAttributeProcessor> constructor = + processorClass.getConstructor(ModelFactoryExtensionPoint.class, Monitor.class); + processor = constructor.newInstance(modelFactories, monitor); + } catch (NoSuchMethodException e) { + try { + Constructor<StAXAttributeProcessor> constructor = + processorClass.getConstructor(ExtensionPointRegistry.class, Monitor.class); + processor = constructor.newInstance(extensionPoints, monitor); + } catch (NoSuchMethodException e1) { + try { + Constructor<StAXAttributeProcessor> constructor = + processorClass.getConstructor(ModelFactoryExtensionPoint.class, StAXArtifactProcessor.class, Monitor.class); + processor = constructor.newInstance(modelFactories, extensionProcessor, monitor); + } catch (NoSuchMethodException e2) { + try { + Constructor<StAXAttributeProcessor> constructor = + processorClass.getConstructor(ExtensionPointRegistry.class, StAXArtifactProcessor.class, Monitor.class); + processor = constructor.newInstance(extensionPoints, extensionProcessor, monitor); + } catch (NoSuchMethodException e3) { + try { + Constructor<StAXAttributeProcessor> constructor = + processorClass.getConstructor(ModelFactoryExtensionPoint.class); + processor = constructor.newInstance(modelFactories); + } catch (NoSuchMethodException e4) { + try { + Constructor<StAXAttributeProcessor> constructor = + processorClass.getConstructor(ExtensionPointRegistry.class); + processor = constructor.newInstance(extensionPoints); + } catch (NoSuchMethodException e4a) { + try { + Constructor<StAXAttributeProcessor> constructor = + processorClass.getConstructor(ModelFactoryExtensionPoint.class, StAXArtifactProcessor.class); + processor = constructor.newInstance(modelFactories, extensionProcessor); + } catch (NoSuchMethodException e5) { + Constructor<StAXAttributeProcessor> constructor = + processorClass.getConstructor(ExtensionPointRegistry.class, StAXArtifactProcessor.class); + processor = constructor.newInstance(extensionPoints, extensionProcessor); + } + } + } + } + } + } + } + } catch (Exception e) { + IllegalStateException ie = new IllegalStateException(e); + error("IllegalStateException", processor, ie); + throw ie; + } + + } + return processor; + } + + public Object read(QName attributeName, XMLStreamReader inputSource) throws ContributionReadException, XMLStreamException { + return getProcessor().read(attributeName, inputSource); + } + + @SuppressWarnings("unchecked") + public void write(Object model, XMLStreamWriter outputSource) throws ContributionWriteException, XMLStreamException { + getProcessor().write(model, outputSource); + } + + public Class<?> getModelType() { + if (modelTypeName != null && modelType == null) { + try { + modelType = processorDeclaration.loadClass(modelTypeName); + } catch (Exception e) { + IllegalStateException ie = new IllegalStateException(e); + error("IllegalStateException", processorDeclaration, ie); + throw ie; + } + } + return modelType; + } + + @SuppressWarnings("unchecked") + public void resolve(Object model, ModelResolver resolver) throws ContributionResolveException { + getProcessor().resolve(model, resolver); + } + + } +} diff --git a/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/ExtensibleStAXAttributeProcessor.java b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/ExtensibleStAXAttributeProcessor.java new file mode 100644 index 0000000000..3329f0bf1c --- /dev/null +++ b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/ExtensibleStAXAttributeProcessor.java @@ -0,0 +1,224 @@ +/* + * 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.contribution.processor; + +import java.io.InputStream; +import java.io.OutputStream; +import java.util.logging.Level; +import java.util.logging.Logger; + +import javax.xml.namespace.QName; +import javax.xml.stream.Location; +import javax.xml.stream.XMLInputFactory; +import javax.xml.stream.XMLOutputFactory; +import javax.xml.stream.XMLStreamConstants; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.tuscany.sca.assembly.builder.impl.ProblemImpl; +import org.apache.tuscany.sca.contribution.Constants; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.contribution.service.ContributionReadException; +import org.apache.tuscany.sca.contribution.service.ContributionResolveException; +import org.apache.tuscany.sca.contribution.service.ContributionWriteException; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.monitor.Problem; +import org.apache.tuscany.sca.monitor.Problem.Severity; + +/** + * Implementation of an extensible StAX attribute processor. + * + * Takes a StAXAttributeProcessorExtensionPoint and delegates to the proper + * StAXAttributeProcessor by attribute QName + * + * @version $Rev$ $Date$ + */ +public class ExtensibleStAXAttributeProcessor + implements StAXAttributeProcessor<Object> { + + private static final Logger logger = Logger.getLogger(ExtensibleStAXAttributeProcessor.class.getName()); + + private static final QName UNKNOWN_ATTRIBUTE = new QName(Constants.SCA10_TUSCANY_NS, "unknown"); + + private XMLInputFactory inputFactory; + private XMLOutputFactory outputFactory; + private StAXAttributeProcessorExtensionPoint processors; + private Monitor monitor; + + /** + * Constructs a new ExtensibleStAXArtifactProcessor. + * @param processors + * @param inputFactory + * @param outputFactory + */ + public ExtensibleStAXAttributeProcessor(StAXAttributeProcessorExtensionPoint processors, + XMLInputFactory inputFactory, + XMLOutputFactory outputFactory, + Monitor monitor) { + super(); + this.processors = processors; + this.inputFactory = inputFactory; + this.outputFactory = outputFactory; + if (this.outputFactory != null) { + this.outputFactory.setProperty("javax.xml.stream.isRepairingNamespaces", Boolean.TRUE); + } + this.monitor = monitor; + } + + /** + * Report a warning. + * + * @param problems + * @param message + * @param model + */ + private void warning(String message, Object model, Object... messageParameters) { + if (monitor != null) { + Problem problem = new ProblemImpl(this.getClass().getName(), "contribution-validation-messages", Severity.WARNING, model, message, (Object[])messageParameters); + monitor.problem(problem); + } + } + + /** + * Report a error. + * + * @param problems + * @param message + * @param model + */ + private void error(String message, Object model, Object... messageParameters) { + if (monitor != null) { + Problem problem = new ProblemImpl(this.getClass().getName(), "contribution-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters); + monitor.problem(problem); + } + } + + /** + * Report a exception. + * + * @param problems + * @param message + * @param model + */ + private void error(String message, Object model, Exception ex) { + if (monitor != null) { + Problem problem = new ProblemImpl(this.getClass().getName(), "contribution-validation-messages", Severity.ERROR, model, message, ex); + monitor.problem(problem); + } + } + + + public Object read(QName attributeName, XMLStreamReader source) throws ContributionReadException, XMLStreamException { + + // Delegate to the processor associated with the attribute QName + int event = source.getEventType(); + if (event == XMLStreamConstants.START_DOCUMENT) { + source.nextTag(); + } + + StAXAttributeProcessor<?> processor = null; + + //lookup for registered attribute processors + processor = (StAXAttributeProcessor<?>)processors.getProcessor(attributeName); + if (processor == null) { + Location location = source.getLocation(); + if (logger.isLoggable(Level.WARNING)) { + logger.warning("Attribute " + attributeName + " cannot be processed. (" + location + ")"); + } + warning("AttributeCannotBeProcessed", processors, attributeName, location); + } else { + return processor.read(attributeName, source); + } + + return processor == null ? null : processor.read(attributeName, source); + } + + @SuppressWarnings("unchecked") + public void write(Object model, XMLStreamWriter outputSource) throws ContributionWriteException, XMLStreamException { + + if(model == null) { + return; + } + + // Delegate to the processor associated with the model type + StAXAttributeProcessor processor = processors.getProcessor(model.getClass()); + if(processor == null) { + if (logger.isLoggable(Level.WARNING)) { + logger.warning("No StAX processor is configured to handle " + model.getClass()); + } + warning("NoStaxProcessor", processors, model.getClass()); + } else { + processor.write(model, outputSource); + return; + } + } + + + + @SuppressWarnings("unchecked") + public void resolve(Object model, ModelResolver resolver) throws ContributionResolveException { + + // Delegate to the processor associated with the model type + if (model != null) { + StAXAttributeProcessor processor = processors.getProcessor(model.getClass()); + if (processor != null) { + processor.resolve(model, resolver); + } + } + } + + /** + * Read a model from an InputStream. + * @param is The artifact InputStream + * @param type Model type + * @return The model + * @throws ContributionReadException + */ + public <M> M read(InputStream is, Class<M> type) throws ContributionReadException { + return null; + } + + /** + * Write a model to an OutputStream. + * @param model + * @param os + * @throws ContributionWriteException + */ + public void write(Object model, OutputStream os) throws ContributionWriteException { + try { + XMLStreamWriter writer = outputFactory.createXMLStreamWriter(os); + write(model, writer); + writer.flush(); + writer.close(); + } catch (XMLStreamException e) { + ContributionWriteException cw = new ContributionWriteException(e); + error("ContributionWriteException", outputFactory, cw); + throw cw; + } + } + + public QName getArtifactType() { + return null; + } + + public Class<Object> getModelType() { + return null; + } +} diff --git a/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/StAXAttributeProcessor.java b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/StAXAttributeProcessor.java new file mode 100644 index 0000000000..e8edb743a4 --- /dev/null +++ b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/StAXAttributeProcessor.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.contribution.processor; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.tuscany.sca.contribution.service.ContributionReadException; +import org.apache.tuscany.sca.contribution.service.ContributionWriteException; + + +/** + * An artifact processor that can read attributes from a StAX XMLStreamReader. + * + * @version $Rev$ $Date$ + */ +public interface StAXAttributeProcessor<M> extends ArtifactProcessor<M>{ + + /** + * Reads a model from an XMLStreamReader. + * + * @param reader The XMLStreamReader + * @return A model representation of the input. + */ + M read(QName attributeName, XMLStreamReader reader) throws ContributionReadException, XMLStreamException; + + /** + * Writes a model to an XMLStreamWriter. + * + * @param model A model representing the source + * @param writer The XML stream writer + * @throws ContributionWriteException + * @throws XMLStreamException + */ + void write(M model, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException; + + /** + * Returns the type of artifact handled by this artifact processor. + * + * @return The type of artifact handled by this artifact processor + */ + QName getArtifactType(); + +} diff --git a/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/StAXAttributeProcessorExtensionPoint.java b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/StAXAttributeProcessorExtensionPoint.java new file mode 100644 index 0000000000..ebad243c1c --- /dev/null +++ b/branches/sca-java-1.3.2/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/StAXAttributeProcessorExtensionPoint.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.contribution.processor; + +/** + * An extension point for StAX artifact processors. + * + * @version $Rev$ $Date$ + */ +public interface StAXAttributeProcessorExtensionPoint extends + ArtifactProcessorExtensionPoint<StAXAttributeProcessor> { + +} |