/*
* 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 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.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.CallbackWireObjectFactory;
import org.apache.tuscany.sca.core.invocation.ProxyFactory;
import org.apache.tuscany.sca.core.invocation.TargetInvokerCreationException;
import org.apache.tuscany.sca.core.invocation.WireObjectFactory;
import org.apache.tuscany.sca.databinding.DataBindingExtensionPoint;
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.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: 568826 $ $Date: 2007-08-23 06:27:34 +0100 (Thu, 23 Aug 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 && !(element.getAnchor() instanceof Constructor) && configuredProperty.getValue() != null) {
instanceFactoryProvider.getInjectionSites().add(element);
Class propertyJavaType = JavaIntrospectionHelper.getBaseType(element.getType(), element.getGenericType());
ObjectFactory<?> propertyObjectFactory = createPropertyValueFactory(configuredProperty, configuredProperty.getValue(), propertyJavaType);
instanceFactoryProvider.setObjectFactory(element, 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();
ObjectFactory<?> factory = new CallbackWireObjectFactory(element.getType(), 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, businessType);
factory = new CallableReferenceObjectFactory(businessInterface, component, (RuntimeComponentReference) componentReference);
} else {
factory = createWireFactory(baseType, wireList.get(i));
}
factories.add(factory);
}
instanceFactoryProvider.setObjectFactories(element, 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);
} else {
factory = createWireFactory(element.getType(), wireList.get(0));
}
instanceFactoryProvider.setObjectFactory(element, factory);
}
}
}
}
}
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() {
}
Invoker createInvoker(Operation operation) throws TargetInvokerCreationException {
Class<?> implClass = instanceFactoryProvider.getImplementationClass();
try {
Method method = JavaInterfaceUtil.findMethod(implClass, operation);
boolean passByValue = operation.getInterface().isRemotable() && (!instanceFactoryProvider.getImplementation()
.isAllowsPassByReference(method));
Invoker invoker = new JavaImplementationInvoker(method, component);
if (passByValue) {
return new PassByValueInvoker(dataBindingRegistry, operation, method, component);
} else {
return invoker;
}
} catch (NoSuchMethodException e) {
throw new TargetMethodNotFoundException(operation);
}
}
private <B> WireObjectFactory<B> createWireFactory(Class<B> interfaze, RuntimeWire wire) {
return new WireObjectFactory<B>(interfaze, wire, proxyFactory);
}
private ObjectFactory<?> createPropertyValueFactory(ComponentProperty property,
Object propertyValue,
Class javaType) {
return propertyValueFactory.createValueFactory(property, propertyValue, javaType);
}
/**
* @return the component
*/
RuntimeComponent getComponent() {
return component;
}
}