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Diffstat (limited to 'tags/java/sca/2.0-M4-RC1/modules/implementation-spring-sca/src/main/java/org/apache/tuscany/sca/implementation/spring/runtime/context/SpringContextTie.java')
| -rw-r--r-- | tags/java/sca/2.0-M4-RC1/modules/implementation-spring-sca/src/main/java/org/apache/tuscany/sca/implementation/spring/runtime/context/SpringContextTie.java | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M4-RC1/modules/implementation-spring-sca/src/main/java/org/apache/tuscany/sca/implementation/spring/runtime/context/SpringContextTie.java b/tags/java/sca/2.0-M4-RC1/modules/implementation-spring-sca/src/main/java/org/apache/tuscany/sca/implementation/spring/runtime/context/SpringContextTie.java new file mode 100644 index 0000000000..77681b600f --- /dev/null +++ b/tags/java/sca/2.0-M4-RC1/modules/implementation-spring-sca/src/main/java/org/apache/tuscany/sca/implementation/spring/runtime/context/SpringContextTie.java @@ -0,0 +1,133 @@ +/* + * 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.runtime.context; + +import java.net.URL; +import java.util.List; + +import org.apache.tuscany.sca.implementation.spring.processor.ComponentNameAnnotationProcessor; +import org.apache.tuscany.sca.implementation.spring.processor.ComponentStub; +import org.apache.tuscany.sca.implementation.spring.processor.ConstructorAnnotationProcessor; +import org.apache.tuscany.sca.implementation.spring.processor.InitDestroyAnnotationProcessor; +import org.apache.tuscany.sca.implementation.spring.processor.PropertyAnnotationProcessor; +import org.apache.tuscany.sca.implementation.spring.processor.PropertyValueStub; +import org.apache.tuscany.sca.implementation.spring.processor.ReferenceAnnotationProcessor; +import org.springframework.beans.BeansException; +import org.springframework.beans.factory.config.BeanPostProcessor; +import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; +import org.springframework.beans.factory.xml.XmlBeanFactory; +import org.springframework.beans.factory.xml.XmlBeanDefinitionReader; +import org.springframework.context.support.AbstractApplicationContext; +import org.springframework.context.support.GenericApplicationContext; +import org.springframework.core.io.UrlResource; + +/** + * This is the runtime side tie for the corresponding tuscany side stub class. + * It enables the Tuscany code to invoke methods on a Spring context without + * needing to know about any Spring classes. See the SpringContextStub class + * in the implementation-spring module for what the stub does. + */ +public class SpringContextTie { + + private AbstractApplicationContext springContext; + private SpringImplementationStub implementation; + + public SpringContextTie(SpringImplementationStub implementation, List<URL> resource) { + this.implementation = implementation; + SCAParentApplicationContext scaParentContext = new SCAParentApplicationContext(implementation); + springContext = createApplicationContext(scaParentContext, resource); + } + + 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(); + } + + public void close() { + springContext.close(); + if (springContext instanceof GenericApplicationContext) { + springContext.stop(); + } + } + + /** + * Include BeanPostProcessor to deal with SCA Annotations in Spring Bean + */ + private AbstractApplicationContext createApplicationContext(SCAParentApplicationContext scaParentContext, List<URL> resources) { + + XmlBeanFactory beanFactory = null; + AbstractApplicationContext appContext = null; + + if (resources.size() > 1) { + GenericApplicationContext appCtx = + new SCAGenericApplicationContext(scaParentContext, implementation.getClassLoader()); + XmlBeanDefinitionReader xmlReader = new XmlBeanDefinitionReader(appCtx); + for (URL resource : resources) { + xmlReader.loadBeanDefinitions(new UrlResource(resource)); + } + xmlReader.setBeanClassLoader(implementation.getClassLoader()); + includeAnnotationProcessors(appCtx.getBeanFactory()); + return appCtx; + } + + // use the generic application context as default + beanFactory = new XmlBeanFactory(new UrlResource(resources.get(0))); + beanFactory.setBeanClassLoader(implementation.getClassLoader()); + includeAnnotationProcessors(beanFactory); + appContext = new SCAGenericApplicationContext(beanFactory, + scaParentContext, + implementation.getClassLoader()); + return appContext; + } + + public Object getBean(String id) throws BeansException { + return springContext.getBean(id); + } + + /** + * 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 + ComponentStub component = new ComponentStub(implementation.getComponentTie()); + BeanPostProcessor referenceProcessor = new ReferenceAnnotationProcessor(component); + beanFactory.addBeanPostProcessor(referenceProcessor); + + // Processor to deal with @Property SCA Annotations + PropertyValueStub pvs = new PropertyValueStub(implementation.getPropertyValueTie()); + BeanPostProcessor propertyProcessor = new PropertyAnnotationProcessor(pvs); + beanFactory.addBeanPostProcessor(propertyProcessor); + + // Processor to deal with @ComponentName SCA Annotations + BeanPostProcessor componentNameProcessor = new ComponentNameAnnotationProcessor(implementation.getComponentName()); + beanFactory.addBeanPostProcessor(componentNameProcessor); + + // Processor to deal with @Constructor SCA Annotations + BeanPostProcessor constructorProcessor = new ConstructorAnnotationProcessor(); + beanFactory.addBeanPostProcessor(constructorProcessor); + } + +}
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