diff options
Diffstat (limited to 'tags/java/sca/1.5.1-RC3/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiAnnotations.java')
| -rw-r--r-- | tags/java/sca/1.5.1-RC3/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiAnnotations.java | 325 |
1 files changed, 325 insertions, 0 deletions
diff --git a/tags/java/sca/1.5.1-RC3/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiAnnotations.java b/tags/java/sca/1.5.1-RC3/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiAnnotations.java new file mode 100644 index 0000000000..33c790585c --- /dev/null +++ b/tags/java/sca/1.5.1-RC3/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiAnnotations.java @@ -0,0 +1,325 @@ +/* + * 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.osgi.context; + + +import java.lang.reflect.Method; +import java.security.AccessController; +import java.security.PrivilegedAction; +import java.util.ArrayList; +import java.util.Hashtable; + +import org.apache.tuscany.sca.assembly.AssemblyFactory; +import org.apache.tuscany.sca.context.RequestContextFactory; +import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; +import org.apache.tuscany.sca.core.invocation.ProxyFactory; +import org.apache.tuscany.sca.core.scope.Scope; +import org.apache.tuscany.sca.implementation.java.DefaultJavaImplementationFactory; +import org.apache.tuscany.sca.implementation.java.IntrospectionException; +import org.apache.tuscany.sca.implementation.java.JavaImplementation; +import org.apache.tuscany.sca.implementation.java.JavaImplementationFactory; +import org.apache.tuscany.sca.implementation.java.impl.JavaScopeImpl; +import org.apache.tuscany.sca.implementation.java.injection.JavaPropertyValueObjectFactory; +import org.apache.tuscany.sca.implementation.java.introspect.JavaClassVisitor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.AllowsPassByReferenceProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.BaseJavaClassVisitor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.ComponentNameProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.ConstructorProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.ContextProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.ConversationProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.DestroyProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.EagerInitProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.HeuristicPojoProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.InitProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.PolicyProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.PropertyProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.ReferenceProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.ResourceProcessor; +import org.apache.tuscany.sca.implementation.java.introspect.impl.ServiceProcessor; +import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory; +import org.apache.tuscany.sca.policy.PolicyFactory; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.osgi.framework.Bundle; + + +/** + * OSGi annotation processing + * OSGi bundles are not introspected by OSGiImplementation when a component is created. + * Instead if the list of implementation classes is specified in <implementation.osgi/>, + * the classes are introspected when the bundle is resolved. The classes are loaded using + * the bundle ClassLoader, and hence the delay in annotation processing is inevitable. + * There is one other difference compared to implementation.java. While instances (and + * the instance class) are associated with a component in Java, all Java annotations from + * the component implementation class apply to all the component instances. In OSGi, + * instances are associated with services, and a bundle can register multiple services. + * Hence annotations from classes need to be stored separately so that the right ones + * can be associated with the service instance. + * + * @version $Rev$ $Date$ + */ +public class OSGiAnnotations { + + private Scope scope = Scope.COMPOSITE; + private boolean isEagerInit; + + private String[] classList; + + private Bundle[] bundles; + + private RuntimeComponent runtimeComponent; + private JavaPropertyValueObjectFactory propertyValueFactory; + private ProxyFactory proxyFactory; + + private JavaImplementationFactory javaImplementationFactory; + private JavaInterfaceFactory javaInterfaceFactory; + private PolicyFactory policyFactory; + private RequestContextFactory requestContextFactory; + + private Hashtable<Class<?>, JavaImplementation> javaAnnotationInfo = + new Hashtable<Class<?>, JavaImplementation>(); + private Hashtable<JavaImplementation, OSGiPropertyInjector> propertyInjectors = + new Hashtable<JavaImplementation, OSGiPropertyInjector>(); + + private long maxAge = -1; + private long maxIdleTime = -1; + + private boolean annotationsProcessed; + + + + public OSGiAnnotations(ModelFactoryExtensionPoint modelFactories, + String[] classList, + RuntimeComponent runtimeComponent, + JavaPropertyValueObjectFactory propertyValueFactory, + ProxyFactory proxyFactory, + RequestContextFactory requestContextFactory, + Bundle mainBundle, + ArrayList<Bundle> dependentBundles) { + + + this.classList = classList; + this.runtimeComponent = runtimeComponent; + this.propertyValueFactory = propertyValueFactory; + this.proxyFactory = proxyFactory; + + AssemblyFactory assemblyFactory = modelFactories.getFactory(AssemblyFactory.class); + this.javaInterfaceFactory = modelFactories.getFactory(JavaInterfaceFactory.class); + this.javaImplementationFactory = createJavaImplementationFactory(assemblyFactory); + this.policyFactory = modelFactories.getFactory(PolicyFactory.class); + + bundles = new Bundle[dependentBundles.size() + 1]; + bundles[0] = mainBundle; + for (int i = 0; i < dependentBundles.size(); i++) + bundles[i + 1] = dependentBundles.get(i); + + } + + + public void processAnnotations() throws IntrospectionException { + + if (annotationsProcessed) + return; + annotationsProcessed = true; + for (String className : classList) { + for (Bundle bundle : bundles) { + try { + Class<?> clazz = bundle.loadClass(className); + + processAnnotations(clazz); + + break; + + } catch (ClassNotFoundException e) { + } + } + } + } + + + public void injectProperties(Object instance) { + JavaImplementation javaImpl = getAnnotationInfo(instance); + if (javaImpl != null) { + OSGiPropertyInjector injector = propertyInjectors.get(javaImpl); + if (injector != null) + injector.injectProperties(instance); + } + } + + + public Scope getScope() { + return scope; + } + + + + public boolean isAllowsPassByReference(Object instance, Method method) { + + JavaImplementation javaImpl = getAnnotationInfo(instance); + if (javaImpl == null) { + return false; + } + if (javaImpl.isAllowsPassByReference()) { + return true; + } + return javaImpl.isAllowsPassByReference(method); + } + + + public boolean isEagerInit() { + return isEagerInit; + } + + public long getMaxAge() { + return maxAge; + } + + public long getMaxIdleTime() { + return maxIdleTime; + } + + public Method getInitMethod(Object instance) { + JavaImplementation javaImpl = getAnnotationInfo(instance); + return javaImpl == null? null : javaImpl.getInitMethod(); + } + + + public Method getDestroyMethod(Object instance) { + JavaImplementation javaImpl = getAnnotationInfo(instance); + return javaImpl == null? null : javaImpl.getDestroyMethod(); + } + + + /* + * Get the annotation corresponding to an instance + * + */ + private JavaImplementation getAnnotationInfo(final Object instance) { + + // The simplest case where the implementation class was listed under the + // classes attribute of <implementation.osgi/>, or this is the second call + // to this method for the implementation class. + // Allow privileged access to get classloader. Requires getClassLoader in security policy. + JavaImplementation javaImpl = AccessController.doPrivileged(new PrivilegedAction<JavaImplementation>() { + public JavaImplementation run() { + return javaAnnotationInfo.get(instance.getClass()); + } + }); + if (javaImpl != null) + return javaImpl; + + // Process annotations from the instance class. + try { + return processAnnotations(instance.getClass()); + } catch (IntrospectionException e) { + // e.printStackTrace(); + } + + return null; + } + + + private JavaImplementation processAnnotations(Class<?> clazz) + throws IntrospectionException { + + JavaImplementation javaImpl = javaImplementationFactory.createJavaImplementation(clazz); + + javaAnnotationInfo.put(clazz, javaImpl); + + OSGiPropertyInjector propertyInjector = new OSGiPropertyInjector( + javaImpl, runtimeComponent, propertyValueFactory, proxyFactory, requestContextFactory); + + propertyInjectors.put(javaImpl, propertyInjector); + + if (javaImpl.isEagerInit()) + isEagerInit = true; + if (javaImpl.getMaxAge() != -1) + maxAge = javaImpl.getMaxAge(); + if (javaImpl.getMaxIdleTime() != -1) + maxIdleTime = javaImpl.getMaxIdleTime(); + if (javaImpl.getJavaScope() != JavaScopeImpl.COMPOSITE) + scope = new Scope(javaImpl.getJavaScope().getScope()); + + return javaImpl; + } + + + + + private JavaImplementationFactory createJavaImplementationFactory(AssemblyFactory assemblyFactory) { + JavaImplementationFactory javaImplementationFactory = new DefaultJavaImplementationFactory(); + + // Create the list of class visitors + BaseJavaClassVisitor[] extensions = + new BaseJavaClassVisitor[] { + new ConstructorProcessor(assemblyFactory), + new AllowsPassByReferenceProcessor(assemblyFactory), + new ComponentNameProcessor(assemblyFactory), + new ContextProcessor(assemblyFactory), + new ConversationProcessor(assemblyFactory), + new DestroyProcessor(assemblyFactory), + new EagerInitProcessor(assemblyFactory), + new InitProcessor(assemblyFactory), + new PropertyProcessor(assemblyFactory), + new ReferenceProcessor(assemblyFactory, javaInterfaceFactory), + new ResourceProcessor(assemblyFactory), + new OSGiScopeProcessor(assemblyFactory), + new ServiceProcessor(assemblyFactory, javaInterfaceFactory), + new HeuristicPojoProcessor(assemblyFactory, javaInterfaceFactory), + new PolicyProcessor(assemblyFactory, policyFactory)}; + for (JavaClassVisitor extension : extensions) { + javaImplementationFactory.addClassVisitor(extension); + } + + return javaImplementationFactory; + } + + private class OSGiScopeProcessor extends BaseJavaClassVisitor { + + public OSGiScopeProcessor(AssemblyFactory factory) { + super(factory); + } + + @Override + public <T> void visitClass(Class<T> clazz, + JavaImplementation type) + throws IntrospectionException { + org.osoa.sca.annotations.Scope annotation = clazz.getAnnotation(org.osoa.sca.annotations.Scope.class); + if (annotation == null) { + type.setJavaScope(JavaScopeImpl.COMPOSITE); + return; + } + String name = annotation.value(); + JavaScopeImpl scope; + if ("COMPOSITE".equals(name)) { + scope = JavaScopeImpl.COMPOSITE; + } else if ("SESSION".equals(name)) { + scope = JavaScopeImpl.SESSION; + } else if ("CONVERSATION".equals(name)) { + scope = JavaScopeImpl.CONVERSATION; + } else if ("REQUEST".equals(name)) { + scope = JavaScopeImpl.REQUEST; + } else { + scope = new JavaScopeImpl(name); + } + type.setJavaScope(scope); + } + } + + +} |