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.impl.DefaultComponent;
022    import org.springframework.beans.BeansException;
023    import org.springframework.context.ApplicationContext;
024    import org.springframework.context.ApplicationContextAware;
025    import org.springframework.context.ConfigurableApplicationContext;
026    
027    /**
028     * An <a href="http://camel.apache.org/event.html">Event Component</a>
029     * for working with Spring ApplicationEvents
030     * 
031     * @version $Revision: 16340 $
032     */
033    public class EventComponent extends DefaultComponent implements ApplicationContextAware {
034        private ApplicationContext applicationContext;
035    
036        public EventComponent() {
037        }
038    
039        public EventComponent(ApplicationContext applicationContext) {
040            setApplicationContext(applicationContext);
041        }
042    
043        public ApplicationContext getApplicationContext() {
044            return applicationContext;
045        }
046    
047        public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
048            this.applicationContext = applicationContext;
049        }
050    
051        public ConfigurableApplicationContext getConfigurableApplicationContext() {
052            ApplicationContext applicationContext = getApplicationContext();
053            if (applicationContext instanceof ConfigurableApplicationContext) {
054                return (ConfigurableApplicationContext)applicationContext;
055            } else {
056                throw new IllegalArgumentException("Class: " + applicationContext.getClass().getName() + " is not an instanceof ConfigurableApplicationContext.");
057            }
058        }
059    
060        protected EventEndpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception {
061            EventEndpoint answer = new EventEndpoint(uri, this);
062            return answer;
063        }
064    }