ActiveMQ example source code file (IdentityMessageReuseConverter.java)

This example ActiveMQ source code file (IdentityMessageReuseConverter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

activemqmessage, activemqmessage, cannot, identitymessagereuseconverter, jmsexception, jmsexception, message, message, messageconversionexception, messageconversionexception, messageconverter, object, session

The ActiveMQ IdentityMessageReuseConverter.java source code

/**
 *
 * 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.activemq.camel.converter;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;

import org.apache.activemq.command.ActiveMQMessage;
import org.springframework.jms.support.converter.MessageConversionException;
import org.springframework.jms.support.converter.MessageConverter;
import org.springframework.util.ObjectUtils;

/**
 * Identity conversion, return the original ActiveMQMessage as is, useful when camel does message
 * redelivery routing. ReadOnlyPropertes flag inverted to allow 
 * additional properties to be appended or existing properties to be modified
 */
public class IdentityMessageReuseConverter implements MessageConverter {

    /* (non-Javadoc)
     * @see org.springframework.jms.support.converter.MessageConverter#fromMessage(javax.jms.Message)
     */
    public Object fromMessage(Message message) throws JMSException, MessageConversionException {
        return message;
    }

    /* (non-Javadoc)
     * @see org.springframework.jms.support.converter.MessageConverter#toMessage(java.lang.Object, javax.jms.Session)
     */
    public Message toMessage(Object object, Session session) throws JMSException, MessageConversionException {
        if (object instanceof ActiveMQMessage) {
            // allow setting additional properties
            ((ActiveMQMessage)object).setReadOnlyProperties(false);
            return (Message)object;
        } else {
            throw new MessageConversionException("Cannot reuse object of type [" +
                    ObjectUtils.nullSafeClassName(object) + "] as ActiveMQMessage message. Message must already be an ActiveMQMessage.");
        }
    }
}