diff options
Diffstat (limited to 'sandbox/event/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiPropertyInjector.java')
| -rw-r--r-- | sandbox/event/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiPropertyInjector.java | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/sandbox/event/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiPropertyInjector.java b/sandbox/event/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiPropertyInjector.java new file mode 100644 index 0000000000..0264f0b102 --- /dev/null +++ b/sandbox/event/modules/implementation-osgi/src/main/java/org/apache/tuscany/sca/implementation/osgi/context/OSGiPropertyInjector.java @@ -0,0 +1,293 @@ +/* + * 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.annotation.ElementType; +import java.lang.reflect.Constructor; +import java.lang.reflect.Field; +import java.lang.reflect.Member; +import java.lang.reflect.Method; +import java.util.ArrayList; +import java.util.Collection; +import java.util.HashMap; +import java.util.Hashtable; +import java.util.List; +import java.util.Map; + +import org.apache.tuscany.sca.assembly.ComponentProperty; +import org.apache.tuscany.sca.assembly.ComponentService; +import org.apache.tuscany.sca.context.RequestContextFactory; +import org.apache.tuscany.sca.core.context.RequestContextImpl; +import org.apache.tuscany.sca.core.factory.ObjectCreationException; +import org.apache.tuscany.sca.core.factory.ObjectFactory; +import org.apache.tuscany.sca.core.invocation.CallbackWireObjectFactory; +import org.apache.tuscany.sca.core.invocation.ProxyFactory; +import org.apache.tuscany.sca.implementation.java.IntrospectionException; +import org.apache.tuscany.sca.implementation.java.JavaImplementation; +import org.apache.tuscany.sca.implementation.java.impl.JavaElementImpl; +import org.apache.tuscany.sca.implementation.java.impl.JavaResourceImpl; +import org.apache.tuscany.sca.implementation.java.injection.ArrayMultiplicityObjectFactory; +import org.apache.tuscany.sca.implementation.java.injection.ConversationIDObjectFactory; +import org.apache.tuscany.sca.implementation.java.injection.FieldInjector; +import org.apache.tuscany.sca.implementation.java.injection.Injector; +import org.apache.tuscany.sca.implementation.java.injection.InvalidAccessorException; +import org.apache.tuscany.sca.implementation.java.injection.JavaPropertyValueObjectFactory; +import org.apache.tuscany.sca.implementation.java.injection.ListMultiplicityObjectFactory; +import org.apache.tuscany.sca.implementation.java.injection.MethodInjector; +import org.apache.tuscany.sca.implementation.java.injection.ResourceObjectFactory; +import org.apache.tuscany.sca.implementation.java.introspect.impl.JavaIntrospectionHelper; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentReference; +import org.apache.tuscany.sca.runtime.RuntimeWire; +import org.osoa.sca.ComponentContext; +import org.osoa.sca.RequestContext; +import org.osoa.sca.annotations.ConversationID; + + +/** + * OSGi property injection support + * + * @version $Rev$ $Date$ + */ +public class OSGiPropertyInjector { + + + private ArrayList<JavaElementImpl> injectionSites = new ArrayList<JavaElementImpl>(); + private Hashtable<JavaElementImpl, ObjectFactory> factories = + new Hashtable<JavaElementImpl, ObjectFactory>(); + + private Injector[] injectors; + + public OSGiPropertyInjector( + JavaImplementation javaImpl, + RuntimeComponent component, + JavaPropertyValueObjectFactory propertyValueFactory, + ProxyFactory proxyFactory, + RequestContextFactory requestContextFactory) throws IntrospectionException { + + createInjectionSites(javaImpl, component, propertyValueFactory, proxyFactory, requestContextFactory); + + injectors = createInjectors(); + + } + + + @SuppressWarnings("unchecked") + public void injectProperties(Object instance) { + + for (Injector injector : injectors) { + injector.inject(instance); + } + + } + + + @SuppressWarnings("unchecked") + private void createInjectionSites( + JavaImplementation javaImpl, + RuntimeComponent component, + JavaPropertyValueObjectFactory propertyValueFactory, + ProxyFactory proxyFactory, + RequestContextFactory requestContextFactory) + { + + List<ComponentProperty> componentProperties = component.getProperties(); + Map<String, JavaElementImpl> propertyMembers = javaImpl.getPropertyMembers(); + + for (ComponentProperty prop : componentProperties) { + JavaElementImpl element = propertyMembers.get(prop.getName()); + + if (element != null && !(element.getAnchor() instanceof Constructor) && prop.getValue() != null) { + Class propertyJavaType = JavaIntrospectionHelper.getBaseType(element.getType(), element.getGenericType()); + ObjectFactory objFactory = propertyValueFactory.createValueFactory(prop, prop.getValue(), propertyJavaType); + + factories.put(element, objFactory); + injectionSites.add(element); + } + } + + for (Member member : javaImpl.getConversationIDMembers()) { + ObjectFactory<String> factory = new ConversationIDObjectFactory(); + if (member instanceof Field) { + JavaElementImpl element = new JavaElementImpl((Field) member); + element.setClassifer(ConversationID.class); + injectionSites.add(element); + factories.put(element, factory); + } else if (member instanceof Method) { + JavaElementImpl element = new JavaElementImpl((Method) member, 0); + element.setName(JavaIntrospectionHelper.toPropertyName(member.getName())); + element.setClassifer(ConversationID.class); + injectionSites.add(element); + factories.put(element, factory); + } else { + throw new InvalidAccessorException( + "Member must be a field or method: " + member.getName()); + } + + } + + if (!javaImpl.getCallbackMembers().isEmpty()) { + Map<String, List<RuntimeWire>> callbackWires = new HashMap<String, List<RuntimeWire>>(); + for (ComponentService service : component.getServices()) { + + RuntimeComponentReference callbackReference = (RuntimeComponentReference)service.getCallbackReference(); + if (callbackReference != null) { + List<RuntimeWire> wires = callbackReference.getRuntimeWires(); + if (!wires.isEmpty()) { + callbackWires.put(wires.get(0).getSource().getInterfaceContract().getInterface().toString(), wires); + } + } + } + + for (Map.Entry<String, Collection<JavaElementImpl>> entry : javaImpl.getCallbackMembers() + .entrySet()) { + List<RuntimeWire> wires = callbackWires.get(entry.getKey()); + if (wires == null) { + // this can happen when there are no client wires to a + // component that has a callback + continue; + } + for(JavaElementImpl element : entry.getValue()) { + ObjectFactory<?> factory = new CallbackWireObjectFactory(element.getType(), proxyFactory, wires); + if (!(element.getAnchor() instanceof Constructor)) { + injectionSites.add(element); + } + factories.put(element, factory); + } + } + } + + for (JavaResourceImpl resource : javaImpl.getResources().values()) { + + ObjectFactory<?> objectFactory; + Class<?> type = resource.getElement().getType(); + if (ComponentContext.class.equals(type)) { + objectFactory = new ComponentContextFactory(component); + + } else if (RequestContext.class.equals(type)) { + objectFactory = new RequestContextObjectFactory(requestContextFactory, proxyFactory); + + } else { + boolean optional = resource.isOptional(); + String mappedName = resource.getMappedName(); + objectFactory = new ResourceObjectFactory(type, mappedName, optional, null); + } + factories.put(resource.getElement(), objectFactory); + if (!(resource.getElement().getAnchor() instanceof Constructor)) { + injectionSites.add(resource.getElement()); + } + } + + + } + + + @SuppressWarnings("unchecked") + private Injector[] createInjectors() { + + Injector[] injectors = (Injector[])new Injector[injectionSites.size()]; + + int i = 0; + for (JavaElementImpl element : injectionSites) { + Object obj = factories.get(element); + if (obj != null) { + if (obj instanceof ObjectFactory) { + ObjectFactory<?> factory = (ObjectFactory<?>)obj; + Member member = (Member)element.getAnchor(); + if (element.getElementType() == ElementType.FIELD) { + injectors[i++] = new FieldInjector((Field)member, factory); + } else if (element.getElementType() == ElementType.PARAMETER && member instanceof Method) { + injectors[i++] = new MethodInjector((Method)member, factory); + } else if (member instanceof Constructor) { + // Ignore + } else { + throw new AssertionError(String.valueOf(element)); + } + } else { + injectors[i++] = createMultiplicityInjector(element, (List<ObjectFactory<?>>)obj); + } + } + } + return injectors; + } + + @SuppressWarnings("unchecked") + protected Injector createMultiplicityInjector(JavaElementImpl element, List<ObjectFactory<?>> factories) { + Class<?> interfaceType = JavaIntrospectionHelper.getBaseType(element.getType(), element.getGenericType()); + + if (element.getAnchor() instanceof Field) { + Field field = (Field)element.getAnchor(); + if (field.getType().isArray()) { + return new FieldInjector(field, new ArrayMultiplicityObjectFactory(interfaceType, factories)); + } else { + return new FieldInjector(field, new ListMultiplicityObjectFactory(factories)); + } + } else if (element.getAnchor() instanceof Method) { + Method method = (Method)element.getAnchor(); + if (method.getParameterTypes()[0].isArray()) { + return new MethodInjector(method, new ArrayMultiplicityObjectFactory(interfaceType, factories)); + } else { + return new MethodInjector(method, new ListMultiplicityObjectFactory(factories)); + } + } else { + throw new InvalidAccessorException("Member must be a field or method: " + element.getName()); + } + } + + private static class ComponentContextFactory implements ObjectFactory { + + RuntimeComponent component; + + private ComponentContextFactory(RuntimeComponent component) { + this.component = component; + } + + public Object getInstance() throws ObjectCreationException { + return component.getComponentContext(); + } + + } + + + private static class RequestContextObjectFactory implements ObjectFactory { + + private RequestContextFactory factory; + private ProxyFactory proxyFactory; + + public RequestContextObjectFactory(RequestContextFactory factory) { + this(factory, null); + } + + public RequestContextObjectFactory(RequestContextFactory factory, ProxyFactory proxyFactory) { + this.factory = factory; + this.proxyFactory = proxyFactory; + } + + public RequestContext getInstance() throws ObjectCreationException { + if (factory != null) { + return factory.createRequestContext(); + } else { + return new RequestContextImpl(proxyFactory); + } + } + + } + +} |