/*
* Copyright 2007-2010 the original author or authors.
*
* Licensed 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.impalaframework.spring.dynamic;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.framework.ProxyFactoryBean;
import org.springframework.aop.target.PrototypeTargetSource;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.config.RuntimeBeanReference;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.RootBeanDefinition;
public class DynamicBeansProcessor implements BeanFactoryPostProcessor {
private static final Log logger = LogFactory.getLog(DynamicBeansProcessor.class);
public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
String[] beanDefinitionNames = beanFactory.getBeanDefinitionNames().clone();
for (String beanName : beanDefinitionNames) {
BeanDefinition beanDefinition = beanFactory.getBeanDefinition(beanName);
if (logger.isInfoEnabled())
logger.info(beanName + ": " + beanDefinition.getScope());
if (beanDefinition.getScope().equals("dynamic") && beanFactory instanceof BeanDefinitionRegistry) {
final BeanDefinitionRegistry bdr = (BeanDefinitionRegistry) beanFactory;
final String implBeanName = beanName + "Impl";
final String targetSourceBeanName = beanName + "TargetSource";
bdr.registerBeanDefinition(implBeanName, beanDefinition);
/*
* <bean id="testInterface"
* class="org.springframework.aop.framework.ProxyFactoryBean">
* <property name="targetSource"> <bean
* class="org.impalaframework.spring.externalconfig.RefreshableTargetSourceFactoryBean">
* <property name="beanName" methodName = "testInterfaceImpl"/>
* </bean> </property> </bean>
*/
RootBeanDefinition targetSource = new RootBeanDefinition(PrototypeTargetSource.class);
targetSource.getPropertyValues().addPropertyValue("targetBeanName", implBeanName);
bdr.registerBeanDefinition(targetSourceBeanName, targetSource);
RootBeanDefinition proxy = new RootBeanDefinition(ProxyFactoryBean.class);
proxy.getPropertyValues().addPropertyValue("targetSource",
new RuntimeBeanReference(targetSourceBeanName));
bdr.registerBeanDefinition(beanName, proxy);
}
}
}
}