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/*
* 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.spring;
import java.util.List;
import java.util.Iterator;
import org.apache.tuscany.sca.core.invocation.ProxyFactory;
import org.apache.tuscany.sca.implementation.java.injection.JavaPropertyValueObjectFactory;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.policy.util.PolicyHandlerTuple;
import org.apache.tuscany.sca.provider.ImplementationProvider;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
import org.apache.tuscany.sca.runtime.RuntimeComponentService;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
import org.apache.tuscany.sca.implementation.spring.processor.InitDestroyAnnotationProcessor;
import org.apache.tuscany.sca.implementation.spring.processor.ReferenceAnnotationProcessor;
import org.apache.tuscany.sca.implementation.spring.processor.PropertyAnnotationProcessor;
import org.apache.tuscany.sca.implementation.spring.processor.ConstructorAnnotationProcessor;
import org.apache.tuscany.sca.implementation.spring.processor.ComponentNameAnnotationProcessor;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.ConstructorArgumentValues;
import org.springframework.beans.factory.config.TypedStringValue;
import org.springframework.beans.factory.support.ManagedList;
/**
* A provider class for runtime Spring implementation instances
* @version $Rev: 511195 $ $Date: 2007-02-24 02:29:46 +0000 (Sat, 24 Feb 2007) $
*/
public class SpringImplementationProvider implements ImplementationProvider {
private RuntimeComponent component;
// A Spring application context object
private AbstractApplicationContext springContext;
private SpringImplementation implementation;
private JavaPropertyValueObjectFactory propertyValueObjectFactory;
/**
* Constructor for the provider - takes a component definition and a Spring implementation
* description
* @param component - the component in the assembly
* @param implementation - the implementation
*/
public SpringImplementationProvider(RuntimeComponent component,
SpringImplementation implementation,
ProxyFactory proxyService,
JavaPropertyValueObjectFactory propertyValueObjectFactory,
List<PolicyHandlerTuple> policyHandlerClassNames) {
super();
this.implementation = implementation;
this.component = component;
this.propertyValueObjectFactory = propertyValueObjectFactory;
this.implementation.setPolicyHandlerClassNames(policyHandlerClassNames);
SCAParentApplicationContext scaParentContext =
new SCAParentApplicationContext(component, implementation, proxyService, propertyValueObjectFactory);
//springContext = new SCAApplicationContext(scaParentContext, implementation.getResource());
XmlBeanFactory beanFactory = new XmlBeanFactory(implementation.getResource());
springContext = createApplicationContext(beanFactory, scaParentContext);
} // end constructor
public Invoker createInvoker(RuntimeComponentService service, Operation operation) {
return new SpringInvoker(component, springContext, service, operation);
}
public boolean supportsOneWayInvocation() {
return false;
}
/**
* Start this Spring implementation instance
*/
public void start() {
// Do refresh here to ensure that Spring Beans are not touched before the SCA config process
// is complete...
springContext.refresh();
springContext.start();
// System.out.println("SpringImplementationProvider: Spring context started");
} // end method start()
/**
* Stop this implementation instance
*/
public void stop() {
// TODO - complete
springContext.close();
if (springContext instanceof GenericApplicationContext)
springContext.stop();
//System.out.println("SpringImplementationProvider: Spring context stopped");
} // end method stop
/**
* Include BeanPostProcessor to deal with SCA Annotations in Spring Bean
*/
private void includeAnnotationProcessors(ConfigurableListableBeanFactory beanFactory) {
// Processor to deal with @Init and @Destroy SCA Annotations
BeanPostProcessor initDestroyProcessor = new InitDestroyAnnotationProcessor();
beanFactory.addBeanPostProcessor(initDestroyProcessor);
// Processor to deal with @Reference SCA Annotations
BeanPostProcessor referenceProcessor = new ReferenceAnnotationProcessor(component);
beanFactory.addBeanPostProcessor(referenceProcessor);
// Processor to deal with @Property SCA Annotations
BeanPostProcessor propertyProcessor = new PropertyAnnotationProcessor(propertyValueObjectFactory, component);
beanFactory.addBeanPostProcessor(propertyProcessor);
// Processor to deal with @ComponentName SCA Annotations
BeanPostProcessor componentNameProcessor = new ComponentNameAnnotationProcessor(component);
beanFactory.addBeanPostProcessor(componentNameProcessor);
// Processor to deal with @Constructor SCA Annotations
BeanPostProcessor constructorProcessor = new ConstructorAnnotationProcessor();
beanFactory.addBeanPostProcessor(constructorProcessor);
}
/**
* Include BeanPostProcessor to deal with SCA Annotations in Spring Bean
*/
private AbstractApplicationContext createApplicationContext(XmlBeanFactory beanFactory,
SCAParentApplicationContext scaParentContext) {
AbstractApplicationContext appContext = null;
for (String bean : beanFactory.getBeanDefinitionNames()) {
String beanClassName = (beanFactory.getType(bean)).getName();
if (beanClassName.indexOf(".ClassPathXmlApplicationContext") != -1 ||
beanClassName.indexOf(".FileSystemXmlApplicationContext") != -1)
{
BeanDefinition beanDef = beanFactory.getBeanDefinition(bean);
String[] listValues = null;
List<ConstructorArgumentValues.ValueHolder> conArgs =
beanDef.getConstructorArgumentValues().getGenericArgumentValues();
for (ConstructorArgumentValues.ValueHolder conArg : conArgs) {
if (conArg.getValue() instanceof TypedStringValue) {
TypedStringValue value = (TypedStringValue) conArg.getValue();
if (value.getValue().indexOf(".xml") != -1)
listValues = new String[]{value.getValue()};
}
if (conArg.getValue() instanceof ManagedList) {
Iterator itml = ((ManagedList)conArg.getValue()).iterator();
StringBuffer values = new StringBuffer();
while (itml.hasNext()) {
TypedStringValue next = (TypedStringValue)itml.next();
if (next.getValue().indexOf(".xml") != -1) {
values.append(next.getValue());
values.append("~");
}
}
listValues = (values.toString()).split("~");
}
}
if (beanClassName.indexOf(".ClassPathXmlApplicationContext") != -1) {
appContext = new ClassPathXmlApplicationContext(listValues, false, scaParentContext);
//includeAnnotationProcessors(appContext.getBeanFactory());
return appContext;
} else {
appContext = new FileSystemXmlApplicationContext(listValues, false, scaParentContext);
//includeAnnotationProcessors(appContext.getBeanFactory());
return appContext;
}
}
}
// use the generic application context as default
includeAnnotationProcessors(beanFactory);
appContext = new GenericApplicationContext(beanFactory, scaParentContext);
return appContext;
}
} // end class SpringImplementationProvider
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