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-rw-r--r-- | sca-java-2.x/tags/2.0-Beta1-RC2/modules/implementation-jaxrs/src/main/java/org/apache/tuscany/sca/implementation/jaxrs/xml/JAXRSImplementationProcessor.java | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta1-RC2/modules/implementation-jaxrs/src/main/java/org/apache/tuscany/sca/implementation/jaxrs/xml/JAXRSImplementationProcessor.java b/sca-java-2.x/tags/2.0-Beta1-RC2/modules/implementation-jaxrs/src/main/java/org/apache/tuscany/sca/implementation/jaxrs/xml/JAXRSImplementationProcessor.java new file mode 100644 index 0000000000..da25b6edd5 --- /dev/null +++ b/sca-java-2.x/tags/2.0-Beta1-RC2/modules/implementation-jaxrs/src/main/java/org/apache/tuscany/sca/implementation/jaxrs/xml/JAXRSImplementationProcessor.java @@ -0,0 +1,162 @@ +/* + * 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.implementation.jaxrs.xml; + +import static javax.xml.stream.XMLStreamConstants.END_ELEMENT; + +import javax.ws.rs.Path; +import javax.ws.rs.core.Application; +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.assembly.AssemblyFactory; +import org.apache.tuscany.sca.assembly.Service; +import org.apache.tuscany.sca.binding.rest.RESTBinding; +import org.apache.tuscany.sca.binding.rest.RESTBindingFactory; +import org.apache.tuscany.sca.contribution.processor.BaseStAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.processor.ContributionReadException; +import org.apache.tuscany.sca.contribution.processor.ContributionResolveException; +import org.apache.tuscany.sca.contribution.processor.ContributionWriteException; +import org.apache.tuscany.sca.contribution.processor.ProcessorContext; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.resolver.ClassReference; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.apache.tuscany.sca.implementation.jaxrs.JAXRSImplementation; +import org.apache.tuscany.sca.implementation.jaxrs.JAXRSImplementationFactory; +import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException; +import org.apache.tuscany.sca.interfacedef.java.JavaInterface; +import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceContract; +import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory; +import org.oasisopen.sca.ServiceRuntimeException; + +/** + * Implements a StAX artifact processor for Web implementations. + */ +public class JAXRSImplementationProcessor extends BaseStAXArtifactProcessor implements + StAXArtifactProcessor<JAXRSImplementation> { + private static final QName IMPLEMENTATION_JAXRS = JAXRSImplementation.TYPE; + + private AssemblyFactory assemblyFactory; + private JAXRSImplementationFactory implementationFactory; + private RESTBindingFactory restBindingFactory; + private JavaInterfaceFactory javaInterfaceFactory; + + public JAXRSImplementationProcessor(ExtensionPointRegistry extensionPoints) { + FactoryExtensionPoint modelFactories = extensionPoints.getExtensionPoint(FactoryExtensionPoint.class); + this.assemblyFactory = modelFactories.getFactory(AssemblyFactory.class); + this.implementationFactory = modelFactories.getFactory(JAXRSImplementationFactory.class); + this.restBindingFactory = modelFactories.getFactory(RESTBindingFactory.class); + this.javaInterfaceFactory = modelFactories.getFactory(JavaInterfaceFactory.class); + } + + public QName getArtifactType() { + // Returns the QName of the XML element processed by this processor + return IMPLEMENTATION_JAXRS; + } + + public Class<JAXRSImplementation> getModelType() { + // Returns the type of model processed by this processor + return JAXRSImplementation.class; + } + + public JAXRSImplementation read(XMLStreamReader reader, ProcessorContext context) throws ContributionReadException, + XMLStreamException { + + // Read an <implementation.web> element + JAXRSImplementation implementation = implementationFactory.createJAXRSImplementation(); + implementation.setUnresolved(true); + + String application = reader.getAttributeValue(null, "application"); + if (application != null) { + implementation.setApplication(application); + } + + // Skip to end element + while (reader.hasNext()) { + if (reader.next() == END_ELEMENT && IMPLEMENTATION_JAXRS.equals(reader.getName())) { + break; + } + } + + return implementation; + } + + public void resolve(JAXRSImplementation implementation, ModelResolver resolver, ProcessorContext context) + throws ContributionResolveException { + + ClassReference classReference = new ClassReference(implementation.getApplication()); + classReference = resolver.resolveModel(ClassReference.class, classReference, context); + implementation.setApplicationClass(classReference.getJavaClass()); + implementation.setUnresolved(false); + + Application application; + try { + application = (Application) implementation.getApplicationClass().newInstance(); + } catch (Exception e) { + throw new ContributionResolveException(e); + } + + for(Class<?> rootResourceClass: application.getClasses()) { + addService(implementation, rootResourceClass); + } + for(Object rootResource: application.getSingletons()) { + addService(implementation, rootResource.getClass()); + } + + } + + private void addService(JAXRSImplementation implementation, Class<?> rootResourceClass) { + Service service = assemblyFactory.createService(); + JavaInterfaceContract contract = javaInterfaceFactory.createJavaInterfaceContract(); + JavaInterface javaInterface; + try { + javaInterface = javaInterfaceFactory.createJavaInterface(rootResourceClass); + } catch (InvalidInterfaceException e) { + throw new ServiceRuntimeException(e); + } + contract.setInterface(javaInterface); + service.setInterfaceContract(contract); + RESTBinding binding = restBindingFactory.createRESTBinding(); + // FIXME: The @ApplicationPath is available for JAX-RS 1.1 + // binding.setURI("/"); + Path path = rootResourceClass.getAnnotation(Path.class); + if (path != null) { + binding.setURI(path.value()); + } + service.getBindings().add(binding); + service.setName(rootResourceClass.getSimpleName()); + implementation.getServices().add(service); + } + + public void write(JAXRSImplementation implementation, XMLStreamWriter writer, ProcessorContext context) + throws ContributionWriteException, XMLStreamException { + + // Write <implementation.jaxrs> + writeStart(writer, + IMPLEMENTATION_JAXRS.getNamespaceURI(), + IMPLEMENTATION_JAXRS.getLocalPart(), + new XAttr("application", implementation.getApplication())); + + writeEnd(writer); + } +} |