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.jms;
018    
019    import org.apache.camel.CamelContext;
020    import org.apache.camel.Exchange;
021    import org.apache.camel.impl.DefaultEndpoint;
022    import org.apache.commons.logging.Log;
023    import org.apache.commons.logging.LogFactory;
024    import org.springframework.jms.core.JmsOperations;
025    import org.springframework.jms.core.MessageCreator;
026    import org.springframework.jms.listener.AbstractMessageListenerContainer;
027    
028    import javax.jms.JMSException;
029    import javax.jms.Message;
030    import javax.jms.MessageListener;
031    import javax.jms.Session;
032    
033    /**
034     * @version $Revision: 520404 $
035     */
036    public class JmsEndpoint extends DefaultEndpoint<JmsExchange> implements MessageListener {
037        private static final Log log = LogFactory.getLog(JmsEndpoint.class);
038    
039        private JmsOperations template;
040        private AbstractMessageListenerContainer listenerContainer;
041        private String destination;
042    
043        public JmsEndpoint(String endpointUri, CamelContext container, String destination, JmsOperations template, AbstractMessageListenerContainer listenerContainer) {
044            super(endpointUri, container);
045            this.destination = destination;
046            this.template = template;
047            this.listenerContainer = listenerContainer;
048            this.listenerContainer.setMessageListener(this);
049        }
050    
051        public void onMessage(Message message) {
052            if (log.isDebugEnabled()) {
053                log.debug(JmsEndpoint.this + " receiving JMS message: " + message);
054            }
055            JmsExchange exchange = createExchange(message);
056            getInboundProcessor().onExchange(exchange);
057        }
058    
059    
060        public void send(Exchange exchange) {
061            // lets convert to the type of an exchange
062            JmsExchange jmsExchange = convertTo(JmsExchange.class, exchange);
063            onExchange(jmsExchange);
064        }
065    
066        public void onExchange(final JmsExchange exchange) {
067            template.send(destination, new MessageCreator() {
068                public Message createMessage(Session session) throws JMSException {
069                    Message message = exchange.createMessage(session);
070                    if (log.isDebugEnabled()) {
071                        log.debug(JmsEndpoint.this + " sending JMS message: " + message);
072                    }
073                    return message;
074                }
075            });
076        }
077    
078        public JmsOperations getTemplate() {
079            return template;
080        }
081    
082        public JmsExchange createExchange() {
083            return new DefaultJmsExchange(getContext());
084        }
085    
086    
087        public JmsExchange createExchange(Message message) {
088            return new DefaultJmsExchange(getContext(), message);
089        }
090    
091    
092        protected void doActivate() {
093            super.doActivate();
094            listenerContainer.afterPropertiesSet();
095            listenerContainer.initialize();
096            listenerContainer.start();
097        }
098    
099        protected void doDeactivate() {
100            listenerContainer.stop();
101            listenerContainer.destroy();
102            super.doDeactivate();
103        }
104    }