/*
* Copyright 2010, 2013, 2014 Chris Pheby
*
* 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.jadira.jms.mdp;
import javax.jms.Message;
import javax.jms.MessageListener;
import org.jadira.jms.exception.FatalJmsException;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.jms.core.JmsTemplate;
/**
* Provides a base implementation for a Message Driven POJO. The key benefit of extending this class is that a standard error handling pattern is 'baked in'. This class should be configured by setting
* the appropriate JmsTemplate for handling Fatal JMS failures.
*/
public abstract class AbstractMessageDriven implements MessageListener, InitializingBean {
private JmsTemplate fatalJmsExceptionHandler;
public JmsTemplate getFatalJmsExceptionHandler() {
return fatalJmsExceptionHandler;
}
public void setFatalJmsExceptionHandler(JmsTemplate fatalJmsExceptionHandler) {
this.fatalJmsExceptionHandler = fatalJmsExceptionHandler;
}
@Override
public void onMessage(final Message message) {
if (fatalJmsExceptionHandler == null) {
doOnMessage(message);
} else {
try {
doOnMessage(message);
} catch (final FatalJmsException e) {
fatalJmsExceptionHandler.send(new FatalJmsExceptionMessageCreator(message, e));
}
}
}
/**
* Implements message handling functionality
* @param message Message to be read
* @throws FatalJmsException Exception thrown to indicate a processing failure that cannot be recovered from
*/
protected abstract void doOnMessage(Message message) throws FatalJmsException;
}