/*
* Copyright 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.camunda.bpm.engine.spring.components.config.xml;
import org.camunda.bpm.engine.ProcessEngine;
import org.camunda.bpm.engine.spring.components.ActivitiContextUtils;
import org.camunda.bpm.engine.spring.components.registry.ActivitiStateHandlerRegistry;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionReaderUtils;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.RootBeanDefinition;
import java.util.logging.Logger;
/**
* this class is responsible for registering the other {@link org.springframework.beans.factory.config.BeanFactoryPostProcessor}s
* and {@link BeanFactoryPostProcessor}s.
* <p/>
* Particularly, this will register the {@link ActivitiStateHandlerRegistry} which is used to react to states.
*
* @author Josh Long
*/
public class StateHandlerAnnotationBeanFactoryPostProcessor implements BeanFactoryPostProcessor {
private ProcessEngine processEngine ;
private Logger log = Logger.getLogger(getClass().getName());
public void setProcessEngine(ProcessEngine processEngine) {
this.processEngine = processEngine;
}
private void configureDefaultActivitiRegistry(String registryBeanName, BeanDefinitionRegistry registry) {
if (!beanAlreadyConfigured(registry, registryBeanName, ActivitiStateHandlerRegistry.class)) {
String registryName =ActivitiStateHandlerRegistry.class.getName();
log.info( "registering a " + registryName + " instance under bean name "+ ActivitiContextUtils.ACTIVITI_REGISTRY_BEAN_NAME+ ".");
RootBeanDefinition rootBeanDefinition = new RootBeanDefinition();
rootBeanDefinition.setBeanClassName( registryName );
rootBeanDefinition.getPropertyValues().addPropertyValue("processEngine", this.processEngine);
BeanDefinitionHolder holder = new BeanDefinitionHolder(rootBeanDefinition, registryBeanName);
BeanDefinitionReaderUtils.registerBeanDefinition(holder, registry);
}
}
public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
if (beanFactory instanceof BeanDefinitionRegistry) {
BeanDefinitionRegistry registry = (BeanDefinitionRegistry) beanFactory;
configureDefaultActivitiRegistry(ActivitiContextUtils.ACTIVITI_REGISTRY_BEAN_NAME, registry);
} else {
log.info("BeanFactory is not a BeanDefinitionRegistry. The default '"
+ ActivitiContextUtils.ACTIVITI_REGISTRY_BEAN_NAME + "' cannot be configured.");
}
}
private boolean beanAlreadyConfigured(BeanDefinitionRegistry registry, String beanName, Class clz) {
if (registry.isBeanNameInUse(beanName)) {
BeanDefinition bDef = registry.getBeanDefinition(beanName);
if (bDef.getBeanClassName().equals(clz.getName())) {
return true; // so the beans already registered, and of the right type. so we assume the user is overriding our configuration
} else {
throw new IllegalStateException("The bean name '" + beanName + "' is reserved.");
}
}
return false;
}
}