| /** |
| * 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.camel.spring.javaconfig; |
| |
| import java.util.List; |
| |
| import org.apache.camel.CamelContext; |
| import org.apache.camel.RoutesBuilder; |
| import org.apache.camel.builder.RouteBuilder; |
| import org.apache.camel.spring.CamelBeanPostProcessor; |
| import org.apache.camel.spring.SpringCamelContext; |
| import org.springframework.beans.factory.BeanFactory; |
| import org.springframework.beans.factory.BeanFactoryAware; |
| import org.springframework.beans.factory.FactoryBean; |
| import org.springframework.beans.factory.ListableBeanFactory; |
| import org.springframework.beans.factory.config.AutowireCapableBeanFactory; |
| import org.springframework.context.ApplicationContext; |
| import org.springframework.context.ApplicationContextAware; |
| import org.springframework.context.ApplicationEventPublisherAware; |
| import org.springframework.context.MessageSourceAware; |
| import org.springframework.context.ResourceLoaderAware; |
| import org.springframework.context.annotation.Bean; |
| import org.springframework.context.annotation.Configuration; |
| |
| |
| |
| /** |
| * A useful base class for writing |
| * <a href="http://www.springsource.org/javaconfig">Spring JavaConfig</a> |
| * configurations for working with Camel |
| * |
| * @version |
| */ |
| @Configuration |
| public abstract class CamelConfiguration implements BeanFactoryAware, ApplicationContextAware { |
| |
| private BeanFactory beanFactory; |
| |
| private AutowireCapableBeanFactory autowireCapableBeanFactory; |
| |
| private ApplicationContext applicationContext; |
| |
| public void setBeanFactory(BeanFactory beanFactory) { |
| this.beanFactory = beanFactory; |
| if (beanFactory instanceof AutowireCapableBeanFactory) { |
| autowireCapableBeanFactory = (AutowireCapableBeanFactory) beanFactory; |
| } |
| } |
| |
| protected BeanFactory getBeanFactory() { |
| return this.beanFactory; |
| } |
| |
| public void setApplicationContext(ApplicationContext ac) { |
| this.applicationContext = ac; |
| } |
| |
| protected ApplicationContext getApplicationContext() { |
| return this.applicationContext; |
| } |
| |
| public Object getBean(String beanName) { |
| return beanFactory.getBean(beanName); |
| } |
| |
| public <T> T getBean(Class<T> type) { |
| return beanFactory.getBean(type); |
| } |
| |
| public <T> T getBean(String beanName, Class<T> type) { |
| return beanFactory.getBean(beanName, type); |
| } |
| |
| |
| /** |
| * Invoke callbacks on the object, as though it were configured in the factory. If appropriate, |
| * the object may be wrapped before being returned. For this reason, it is recommended to always |
| * respect the return value when using this method. |
| * |
| * @param object object to configure |
| * |
| * @return either the original object or a wrapped one after callbacks called on it. |
| */ |
| protected <T> T getConfigured(T object) { |
| if (this.autowireCapableBeanFactory == null) { |
| throw new UnsupportedOperationException( |
| "Cannot configure object - not running in an AutowireCapableBeanFactory"); |
| } |
| |
| @SuppressWarnings("unchecked") // See SPR-4955 |
| T configuredObject = (T) autowireCapableBeanFactory.initializeBean(object, null); |
| |
| // this block copied from ApplicationContextAwareProcessor. See SJC-149. |
| if (this.applicationContext != null) { |
| if (configuredObject instanceof ResourceLoaderAware) { |
| ((ResourceLoaderAware) configuredObject).setResourceLoader(this.applicationContext); |
| } |
| |
| if (configuredObject instanceof ApplicationEventPublisherAware) { |
| ((ApplicationEventPublisherAware) configuredObject).setApplicationEventPublisher(this.applicationContext); |
| } |
| |
| if (configuredObject instanceof MessageSourceAware) { |
| ((MessageSourceAware) configuredObject).setMessageSource(this.applicationContext); |
| } |
| |
| if (configuredObject instanceof ApplicationContextAware) { |
| ((ApplicationContextAware) configuredObject).setApplicationContext(this.applicationContext); |
| } |
| } |
| |
| return configuredObject; |
| } |
| |
| @Bean |
| public CamelBeanPostProcessor camelBeanPostProcessor() throws Exception { |
| CamelBeanPostProcessor answer = new CamelBeanPostProcessor(); |
| |
| CamelContext camelContext = getBean(CamelContext.class); |
| // lets lookup a bean |
| answer.setCamelContext(camelContext); |
| return answer; |
| } |
| |
| /** |
| * Returns the CamelContext |
| */ |
| @Bean |
| public CamelContext camelContext() throws Exception { |
| CamelContext camelContext = createCamelContext(); |
| setupCamelContext(camelContext); |
| List<RouteBuilder> routes = routes(); |
| for (RoutesBuilder route : routes) { |
| camelContext.addRoutes(route); |
| } |
| return camelContext; |
| } |
| |
| // Can register the camel component, language here |
| protected void setupCamelContext(CamelContext camelContext) throws Exception { |
| |
| } |
| |
| protected CamelContext createCamelContext() throws Exception { |
| return new SpringCamelContext(getApplicationContext()); |
| } |
| |
| /** |
| * Returns the list of routes to use in this configuration |
| */ |
| public abstract List<RouteBuilder> routes(); |
| |
| } |