diff options
Diffstat (limited to 'tags/java/sca/2.0-M3-RC3a/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/xml/JavaImplementationProcessor.java')
| -rw-r--r-- | tags/java/sca/2.0-M3-RC3a/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/xml/JavaImplementationProcessor.java | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M3-RC3a/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/xml/JavaImplementationProcessor.java b/tags/java/sca/2.0-M3-RC3a/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/xml/JavaImplementationProcessor.java new file mode 100644 index 0000000000..c325c871f4 --- /dev/null +++ b/tags/java/sca/2.0-M3-RC3a/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/xml/JavaImplementationProcessor.java @@ -0,0 +1,309 @@ +/* + * 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.java.xml; + +import static javax.xml.stream.XMLStreamConstants.END_ELEMENT; +import static org.apache.tuscany.sca.implementation.java.xml.JavaImplementationConstants.CLASS; +import static org.apache.tuscany.sca.implementation.java.xml.JavaImplementationConstants.IMPLEMENTATION_JAVA; +import static org.apache.tuscany.sca.implementation.java.xml.JavaImplementationConstants.IMPLEMENTATION_JAVA_QNAME; +import static org.apache.tuscany.sca.implementation.java.xml.JavaImplementationConstants.SCA11_NS; + +import java.lang.reflect.Field; +import java.lang.reflect.Method; +import java.lang.reflect.Modifier; +import java.util.HashMap; +import java.util.Map; + +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.ComponentType; +import org.apache.tuscany.sca.assembly.Property; +import org.apache.tuscany.sca.assembly.Reference; +import org.apache.tuscany.sca.assembly.Service; +import org.apache.tuscany.sca.assembly.xml.PolicySubjectProcessor; +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.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.resolver.ClassReference; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.apache.tuscany.sca.implementation.java.IntrospectionException; +import org.apache.tuscany.sca.implementation.java.JavaElementImpl; +import org.apache.tuscany.sca.implementation.java.JavaImplementation; +import org.apache.tuscany.sca.implementation.java.JavaImplementationFactory; +import org.apache.tuscany.sca.implementation.java.introspect.JavaIntrospectionHelper; +import org.apache.tuscany.sca.interfacedef.Interface; +import org.apache.tuscany.sca.interfacedef.java.JavaInterface; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.monitor.Problem; +import org.apache.tuscany.sca.monitor.Problem.Severity; +import org.apache.tuscany.sca.policy.ExtensionType; +import org.apache.tuscany.sca.policy.PolicyFactory; + +/** + * + * @version $Rev$ $Date$ + */ +public class JavaImplementationProcessor implements StAXArtifactProcessor<JavaImplementation> { + + private JavaImplementationFactory javaFactory; + private AssemblyFactory assemblyFactory; + private PolicyFactory policyFactory; + private PolicySubjectProcessor policyProcessor; + private Monitor monitor; + + public JavaImplementationProcessor(FactoryExtensionPoint modelFactories, Monitor monitor) { + this.assemblyFactory = modelFactories.getFactory(AssemblyFactory.class); + this.policyFactory = modelFactories.getFactory(PolicyFactory.class); + this.javaFactory = modelFactories.getFactory(JavaImplementationFactory.class); + this.policyProcessor = new PolicySubjectProcessor(policyFactory); + this.monitor = monitor; + } + + /** + * Report a error. + * + * @param problems + * @param message + * @param model + */ + private void error(String message, Object model, Object... messageParameters) { + if (monitor != null) { + Problem problem = + monitor.createProblem(this.getClass().getName(), + "impl-javaxml-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 = + monitor.createProblem(this.getClass().getName(), + "impl-javaxml-validation-messages", + Severity.ERROR, + model, + message, + ex); + monitor.problem(problem); + } + } + + public JavaImplementation read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException { + + // Read an <implementation.java> + JavaImplementation javaImplementation = javaFactory.createJavaImplementation(); + + ExtensionType implType = policyFactory.createImplementationType(); + implType.setType(getArtifactType()); + implType.setUnresolved(true); + javaImplementation.setType(implType); + + javaImplementation.setUnresolved(true); + javaImplementation.setName(reader.getAttributeValue(null, CLASS)); + + // Read policies + policyProcessor.readPolicies(javaImplementation, reader); + + // read operation elements if exists or skip unto end element + int event; + while (reader.hasNext()) { + event = reader.next(); + if (event == END_ELEMENT && IMPLEMENTATION_JAVA_QNAME.equals(reader.getName())) { + break; + } + } + return javaImplementation; + } + + public void write(JavaImplementation javaImplementation, XMLStreamWriter writer) throws ContributionWriteException, + XMLStreamException { + + // Write an <implementation.java> + policyProcessor.writePolicyPrefixes(javaImplementation, writer); + writer.writeStartElement(SCA11_NS, IMPLEMENTATION_JAVA); + policyProcessor.writePolicyAttributes(javaImplementation, writer); + + if (javaImplementation.getName() != null) { + writer.writeAttribute(CLASS, javaImplementation.getName()); + } + + writer.writeEndElement(); + } + + public void resolve(JavaImplementation javaImplementation, ModelResolver resolver) + throws ContributionResolveException { + + try { + ClassReference classReference = new ClassReference(javaImplementation.getName()); + classReference = resolver.resolveModel(ClassReference.class, classReference); + Class<?> javaClass = classReference.getJavaClass(); + if (javaClass == null) { + error("ClassNotFoundException", resolver, javaImplementation.getName()); + //throw new ContributionResolveException(new ClassNotFoundException(javaImplementation.getName())); + return; + } + + javaImplementation.setJavaClass(javaClass); + + try { + javaFactory.createJavaImplementation(javaImplementation, javaImplementation.getJavaClass()); + } catch (IntrospectionException e) { + ContributionResolveException ce = new ContributionResolveException(e); + error("ContributionResolveException", javaFactory, ce); + //throw ce; + return; + } + + javaImplementation.setUnresolved(false); + mergeComponentType(resolver, javaImplementation); + + // FIXME the introspector should always create at least one service + if (javaImplementation.getServices().isEmpty()) { + javaImplementation.getServices().add(assemblyFactory.createService()); + } + } catch (Throwable e ) { + throw new ContributionResolveException( "Resolving Java implementation: " + javaImplementation.getName(), e); + } // end try + } // end method + + private JavaElementImpl getMemeber(JavaImplementation impl, String name, Class<?> type) { + String setter = JavaIntrospectionHelper.toSetter(name); + try { + Method method = impl.getJavaClass().getDeclaredMethod(setter, type); + int mod = method.getModifiers(); + if ((Modifier.isPublic(mod) || Modifier.isProtected(mod)) && (!Modifier.isStatic(mod))) { + return new JavaElementImpl(method, 0); + } + } catch (NoSuchMethodException e) { + Field field; + try { + field = impl.getJavaClass().getDeclaredField(name); + int mod = field.getModifiers(); + if ((Modifier.isPublic(mod) || Modifier.isProtected(mod)) && (!Modifier.isStatic(mod))) { + return new JavaElementImpl(field); + } + } catch (NoSuchFieldException e1) { + // Ignore + } + } + return null; + } + + /** + * Merge the componentType from introspection and external file + * @param resolver + * @param impl + */ + private void mergeComponentType(ModelResolver resolver, JavaImplementation impl) { + // FIXME: Need to clarify how to merge + ComponentType componentType = getComponentType(resolver, impl); + if (componentType != null && !componentType.isUnresolved()) { + Map<String, Reference> refMap = new HashMap<String, Reference>(); + for (Reference ref : impl.getReferences()) { + refMap.put(ref.getName(), ref); + } + for (Reference reference : componentType.getReferences()) { + refMap.put(reference.getName(), reference); + } + impl.getReferences().clear(); + impl.getReferences().addAll(refMap.values()); + + // Try to match references by type + Map<String, JavaElementImpl> refMembers = impl.getReferenceMembers(); + for (Reference ref : impl.getReferences()) { + if (ref.getInterfaceContract() != null) { + Interface i = ref.getInterfaceContract().getInterface(); + if (i instanceof JavaInterface) { + Class<?> type = ((JavaInterface)i).getJavaClass(); + if (!refMembers.containsKey(ref.getName())) { + JavaElementImpl e = getMemeber(impl, ref.getName(), type); + if (e != null) { + refMembers.put(ref.getName(), e); + } + } + } + } + } + + Map<String, Service> serviceMap = new HashMap<String, Service>(); + for (Service svc : impl.getServices()) { + serviceMap.put(svc.getName(), svc); + } + for (Service service : componentType.getServices()) { + serviceMap.put(service.getName(), service); + } + impl.getServices().clear(); + impl.getServices().addAll(serviceMap.values()); + + Map<String, Property> propMap = new HashMap<String, Property>(); + for (Property prop : impl.getProperties()) { + propMap.put(prop.getName(), prop); + } + for (Property property : componentType.getProperties()) { + propMap.put(property.getName(), property); + } + impl.getProperties().clear(); + impl.getProperties().addAll(propMap.values()); + + if (componentType.getConstrainingType() != null) { + impl.setConstrainingType(componentType.getConstrainingType()); + } + } + } + + private ComponentType getComponentType(ModelResolver resolver, JavaImplementation impl) { + String className = impl.getJavaClass().getName(); + String componentTypeURI = className.replace('.', '/') + ".componentType"; + ComponentType componentType = assemblyFactory.createComponentType(); + componentType.setUnresolved(true); + componentType.setURI(componentTypeURI); + componentType = resolver.resolveModel(ComponentType.class, componentType); + if (!componentType.isUnresolved()) { + return componentType; + } + return null; + } + + public QName getArtifactType() { + return IMPLEMENTATION_JAVA_QNAME; + } + + public Class<JavaImplementation> getModelType() { + return JavaImplementation.class; + } + +} |