/*
* 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.invocation;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.xml.namespace.QName;
import org.apache.tuscany.sca.assembly.ComponentProperty;
import org.apache.tuscany.sca.assembly.ComponentReference;
import org.apache.tuscany.sca.assembly.ComponentService;
import org.apache.tuscany.sca.assembly.Multiplicity;
import org.apache.tuscany.sca.assembly.Reference;
import org.apache.tuscany.sca.context.ComponentContextFactory;
import org.apache.tuscany.sca.context.RequestContextFactory;
import org.apache.tuscany.sca.core.context.ComponentContextImpl;
import org.apache.tuscany.sca.core.context.InstanceWrapper;
import org.apache.tuscany.sca.core.factory.ObjectCreationException;
import org.apache.tuscany.sca.core.factory.ObjectFactory;
import org.apache.tuscany.sca.core.invocation.CallableReferenceObjectFactory;
import org.apache.tuscany.sca.core.invocation.CallbackReferenceObjectFactory;
import org.apache.tuscany.sca.core.invocation.CallbackWireObjectFactory;
import org.apache.tuscany.sca.core.invocation.ProxyFactory;
import org.apache.tuscany.sca.core.invocation.WireObjectFactory;
import org.apache.tuscany.sca.core.scope.ScopeContainer;
import org.apache.tuscany.sca.core.scope.TargetResolutionException;
import org.apache.tuscany.sca.databinding.DataBindingExtensionPoint;
import org.apache.tuscany.sca.implementation.java.impl.JavaConstructorImpl;
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.ConversationIDObjectFactory;
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.introspect.impl.JavaIntrospectionHelper;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.interfacedef.java.impl.JavaInterfaceUtil;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.policy.util.PolicyHandler;
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.CallableReference;
import org.osoa.sca.annotations.ConversationID;
/**
* The runtime instantiation of Java component implementations
*
* @version $Rev: 597465 $ $Date: 2007-11-22 09:41:28 -0800 (Thu, 22 Nov 2007) $
*/
public class JavaComponentContextProvider {
private JavaPropertyValueObjectFactory propertyValueFactory;
private DataBindingExtensionPoint dataBindingRegistry;
private RuntimeComponent component;
private JavaInstanceFactoryProvider<?> instanceFactoryProvider;
private ProxyFactory proxyFactory;
public JavaComponentContextProvider(RuntimeComponent component,
JavaInstanceFactoryProvider configuration,
DataBindingExtensionPoint dataBindingExtensionPoint,
JavaPropertyValueObjectFactory propertyValueObjectFactory,
ComponentContextFactory componentContextFactory,
RequestContextFactory requestContextFactory) {
super();
this.instanceFactoryProvider = configuration;
this.proxyFactory = configuration.getProxyFactory();
// if (componentContextFactory != null) {
// this.componentContext = componentContextFactory.createComponentContext(component, requestContextFactory);
// } else {
// this.componentContext = new ComponentContextImpl(this, requestContextFactory, this.proxyService);
// }
this.component = component;
this.dataBindingRegistry = dataBindingExtensionPoint;
this.propertyValueFactory = propertyValueObjectFactory;
}
InstanceWrapper<?> createInstanceWrapper() throws ObjectCreationException {
return instanceFactoryProvider.createFactory().newInstance();
}
void configureProperties(List<ComponentProperty> definedProperties) {
for (ComponentProperty p : definedProperties) {
configureProperty(p);
}
}
private void configureProperty(ComponentProperty configuredProperty) {
JavaElementImpl element =
instanceFactoryProvider.getImplementation().getPropertyMembers().get(configuredProperty.getName());
if (element != null && configuredProperty.getValue() != null) {
if (!(element.getAnchor() instanceof Constructor)) {
instanceFactoryProvider.getInjectionSites().add(element);
}
//Class propertyJavaType = JavaIntrospectionHelper.getBaseType(element.getType(), element.getGenericType());
ObjectFactory<?> propertyObjectFactory =
createPropertyValueFactory(configuredProperty, configuredProperty.getValue(), element);
instanceFactoryProvider.setObjectFactory(element, propertyObjectFactory);
JavaConstructorImpl constructor = instanceFactoryProvider.getImplementation().getConstructor();
for(JavaElementImpl p: constructor.getParameters()){
if(element.getName().equals(p.getName())) {
instanceFactoryProvider.setObjectFactory(p, propertyObjectFactory);
}
}
}
}
void start() {
if (!instanceFactoryProvider.getImplementation().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, JavaElementImpl> entry : instanceFactoryProvider.getImplementation()
.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;
}
JavaElementImpl element = entry.getValue();
Class<?> businessInterface = element.getType();
ObjectFactory<?> factory = null;
if (CallableReference.class.isAssignableFrom(element.getType())) {
businessInterface =
JavaIntrospectionHelper.getBusinessInterface(element.getType(), element.getGenericType());
factory =
new CallbackReferenceObjectFactory(businessInterface, proxyFactory, wires);
} else {
factory = new CallbackWireObjectFactory(businessInterface, proxyFactory, wires);
}
if (!(element.getAnchor() instanceof Constructor)) {
instanceFactoryProvider.getInjectionSites().add(element);
}
instanceFactoryProvider.setObjectFactory(element, factory);
}
}
for (Reference ref : instanceFactoryProvider.getImplementation().getReferences()) {
JavaElementImpl element =
instanceFactoryProvider.getImplementation().getReferenceMembers().get(ref.getName());
if (element != null) {
if (!(element.getAnchor() instanceof Constructor)) {
instanceFactoryProvider.getInjectionSites().add(element);
}
ComponentReference componentReference = null;
List<RuntimeWire> wireList = null;
for (ComponentReference reference : component.getReferences()) {
if (reference.getName().equals(ref.getName())) {
wireList = ((RuntimeComponentReference)reference).getRuntimeWires();
componentReference = reference;
break;
}
}
if (ref.getMultiplicity() == Multiplicity.ONE_N || ref.getMultiplicity() == Multiplicity.ZERO_N) {
List<ObjectFactory<?>> factories = new ArrayList<ObjectFactory<?>>();
Class<?> baseType =
JavaIntrospectionHelper.getBaseType(element.getType(), element.getGenericType());
for (int i = 0; i < wireList.size(); i++) {
ObjectFactory<?> factory = null;
if (CallableReference.class.isAssignableFrom(baseType)) {
Type callableRefType = JavaIntrospectionHelper.getParameterType(element.getGenericType());
// Type businessType = JavaIntrospectionHelper.getParameterType(callableRefType);
Class<?> businessInterface =
JavaIntrospectionHelper.getBusinessInterface(baseType, callableRefType);
factory =
new CallableReferenceObjectFactory(businessInterface, component,
(RuntimeComponentReference)wireList.get(i)
.getSource().getContract(), wireList.get(i)
.getSource().getBinding());
} else {
factory = createObjectFactory(baseType, wireList.get(i));
}
factories.add(factory);
}
instanceFactoryProvider.setObjectFactories(element, factories);
JavaConstructorImpl constructor = instanceFactoryProvider.getImplementation().getConstructor();
for(JavaElementImpl p: constructor.getParameters()){
if(element.getName().equals(p.getName())) {
instanceFactoryProvider.setObjectFactories(p, factories);
}
}
} else {
if (wireList == null && ref.getMultiplicity() == Multiplicity.ONE_ONE) {
throw new IllegalStateException("Required reference is missing: " + ref.getName());
}
if (wireList != null && !wireList.isEmpty()) {
ObjectFactory<?> factory = null;
if (CallableReference.class.isAssignableFrom(element.getType())) {
Class<?> businessInterface =
JavaIntrospectionHelper.getBusinessInterface(element.getType(), element
.getGenericType());
factory =
new CallableReferenceObjectFactory(businessInterface, component,
(RuntimeComponentReference)componentReference, null);
} else {
factory = createObjectFactory(element.getType(), wireList.get(0));
}
instanceFactoryProvider.setObjectFactory(element, factory);
JavaConstructorImpl constructor = instanceFactoryProvider.getImplementation().getConstructor();
for(JavaElementImpl p: constructor.getParameters()){
if(element.getName().equals(p.getName())) {
instanceFactoryProvider.setObjectFactory(p, factory);
}
}
}
}
}
}
// We need to set the PropertyValueFactory on the ComponentContextImpl
// so the ComponentContext can "de-marshal" the property type to a value
// when the getProperty() method is called
ComponentContextImpl ccImpl = (ComponentContextImpl)component.getComponentContext();
ccImpl.setPropertyValueFactory(propertyValueFactory);
//setUpPolicyHandlers();
}
void addResourceFactory(String name, ObjectFactory<?> factory) {
JavaResourceImpl resource = instanceFactoryProvider.getImplementation().getResources().get(name);
if (resource != null && !(resource.getElement().getAnchor() instanceof Constructor)) {
instanceFactoryProvider.getInjectionSites().add(resource.getElement());
}
instanceFactoryProvider.setObjectFactory(resource.getElement(), factory);
}
void addConversationIDFactories(List<Member> names) {
ObjectFactory<String> factory = new ConversationIDObjectFactory();
for (Member name : names) {
if (name instanceof Field) {
JavaElementImpl element = new JavaElementImpl((Field)name);
element.setClassifer(ConversationID.class);
instanceFactoryProvider.setObjectFactory(element, factory);
} else if (name instanceof Method) {
JavaElementImpl element = new JavaElementImpl((Method)name, 0);
element.setName(JavaIntrospectionHelper.toPropertyName(name.getName()));
element.setClassifer(ConversationID.class);
instanceFactoryProvider.setObjectFactory(element, factory);
} else {
throw new InvalidAccessorException("Member must be a field or method: " + name.getName());
}
}
}
Object createInstance() throws ObjectCreationException {
return createInstanceWrapper().getInstance();
}
JavaInstanceFactoryProvider<?> getInstanceFactoryProvider() {
return instanceFactoryProvider;
}
void stop() {
//cleanUpPolicyHandlers();
}
Invoker createInvoker(Operation operation) throws NoSuchMethodException {
Class<?> implClass = instanceFactoryProvider.getImplementationClass();
Method method = JavaInterfaceUtil.findMethod(implClass, operation);
return new JavaImplementationInvoker(operation, method, component);
}
private static class OptimizedObjectFactory<T> implements ObjectFactory<T> {
private ScopeContainer scopeContainer;
public OptimizedObjectFactory(ScopeContainer scopeContainer) {
super();
this.scopeContainer = scopeContainer;
}
public T getInstance() throws ObjectCreationException {
try {
return (T)scopeContainer.getWrapper(null).getInstance();
} catch (TargetResolutionException e) {
throw new ObjectCreationException(e);
}
}
}
private <B> ObjectFactory<B> createObjectFactory(Class<B> interfaze, RuntimeWire wire) {
// FIXME: [rfeng] Disable the optimization for new as it needs more discussions
/*
boolean conversational = wire.getSource().getInterfaceContract().getInterface().isConversational();
Binding binding = wire.getSource().getBinding();
// Check if it's wireable binding for optimization
if (!conversational && binding instanceof OptimizableBinding) {
OptimizableBinding optimizableBinding = (OptimizableBinding)binding;
Component component = optimizableBinding.getTargetComponent();
if (component != null) {
Implementation implementation = component.getImplementation();
// Check if the target component is java component
if (implementation instanceof JavaImplementation) {
JavaImplementation javaImplementation = (JavaImplementation)implementation;
if (interfaze.isAssignableFrom(javaImplementation.getJavaClass())) {
ScopedRuntimeComponent scopedComponent = (ScopedRuntimeComponent)component;
ScopeContainer scopeContainer = scopedComponent.getScopeContainer();
Scope scope = scopeContainer.getScope();
if (scope == Scope.COMPOSITE || scope == Scope.STATELESS || scope == Scope.SYSTEM) {
boolean optimizable = true;
for (InvocationChain chain : wire.getInvocationChains()) {
if (chain.getHeadInvoker() != chain.getTailInvoker()) {
optimizable = false;
break;
}
}
if (optimizable) {
return new OptimizedObjectFactory<B>(scopeContainer);
}
}
}
}
}
}
*/
return new WireObjectFactory<B>(interfaze, wire, proxyFactory);
}
private ObjectFactory<?> createPropertyValueFactory(ComponentProperty property,
Object propertyValue,
JavaElementImpl javaElement) {
return propertyValueFactory.createValueFactory(property, propertyValue, javaElement);
}
/**
* @return the component
*/
RuntimeComponent getComponent() {
return component;
}
/*private void setUpPolicyHandlers() {
for (PolicyHandler policyHandler : policyHandlers.values()) {
policyHandler.setUp(component.getImplementation());
}
}
private void cleanUpPolicyHandlers() {
for (PolicyHandler policyHandler : policyHandlers.values() ) {
policyHandler.cleanUp(this);
}
}*/
}