001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.component.event;
018    
019    import java.util.Map;
020    
021    import org.apache.camel.Exchange;
022    import org.apache.camel.impl.DefaultComponent;
023    
024    import org.springframework.beans.BeansException;
025    import org.springframework.context.ApplicationContext;
026    import org.springframework.context.ApplicationContextAware;
027    import org.springframework.context.ConfigurableApplicationContext;
028    
029    /**
030     * An <a href="http://activemq.apache.org/camel/event.html">Event Component</a>
031     * for working with Spring ApplicationEvents
032     * 
033     * @version $Revision: 35332 $
034     */
035    public class EventComponent extends DefaultComponent<Exchange> implements ApplicationContextAware {
036        private ApplicationContext applicationContext;
037    
038        public EventComponent() {
039        }
040    
041        public EventComponent(ApplicationContext applicationContext) {
042            setApplicationContext(applicationContext);
043        }
044    
045        public ApplicationContext getApplicationContext() {
046            return applicationContext;
047        }
048    
049        public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
050            this.applicationContext = applicationContext;
051        }
052    
053        public ConfigurableApplicationContext getConfigurableApplicationContext() {
054            ApplicationContext applicationContext = getApplicationContext();
055            if (applicationContext instanceof ConfigurableApplicationContext) {
056                return (ConfigurableApplicationContext)applicationContext;
057            } else {
058                throw new IllegalArgumentException("Not created with a ConfigurableApplicationContext! Was: " + applicationContext);
059            }
060        }
061    
062        protected EventEndpoint createEndpoint(String uri, String remaining, Map parameters) throws Exception {
063            EventEndpoint answer = new EventEndpoint(uri, this);
064            // getConfigurableApplicationContext().addApplicationListener(answer);
065            return answer;
066        }
067    }