Package org.exolab.jms.message

Source Code of org.exolab.jms.message.StreamMessageConverter

/**
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided
* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
*    statements and notices.  Redistributions must also contain a
*    copy of this document.
*
* 2. Redistributions in binary form must reproduce the
*    above copyright notice, this list of conditions and the
*    following disclaimer in the documentation and/or other
*    materials provided with the distribution.
*
* 3. The name "Exolab" must not be used to endorse or promote
*    products derived from this Software without prior written
*    permission of Exoffice Technologies.  For written permission,
*    please contact info@exolab.org.
*
* 4. Products derived from this Software may not be called "Exolab"
*    nor may "Exolab" appear in their names without prior written
*    permission of Exoffice Technologies. Exolab is a registered
*    trademark of Exoffice Technologies.
*
* 5. Due credit should be given to the Exolab Project
*    (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
* EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 2003 (C) Exoffice Technologies Inc. All Rights Reserved.
*
* $Id: StreamMessageConverter.java,v 1.1 2004/11/26 01:50:43 tanderson Exp $
*/

package org.exolab.jms.message;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageEOFException;
import javax.jms.StreamMessage;


/**
* Convert a <code>StreamMessage</code> instance to its OpenJMS equivalent
*
* @version     $Revision: 1.1 $ $Date: 2004/11/26 01:50:43 $
* @author      <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
* @see         MessageConverterFactory
*/
class StreamMessageConverter extends AbstractMessageConverter {

    /**
     * Construct an OpenJMS implementation of a message
     *
     * @return the OpenJMS implementation of the message
     * @throws JMSException if the message cannot be created
     */
    protected Message create() throws JMSException {
        return new StreamMessageImpl();
    }

    /**
     * Populate an OpenJMS message from another message of the same type
     *
     * @param source the message to convert
     * @param target the message to populate
     * @throws JMSException for any error
     */
    protected void populate(Message source, Message target)
        throws JMSException {
        StreamMessage from = (StreamMessage) source;
        StreamMessage to = (StreamMessage) target;

        // populate header
        super.populate(from, to);

        // populate body
        from.reset()// make sure the message can be read
        try {
            while (true) {
                Object object = from.readObject();
                to.writeObject(object);
            }
        } catch (MessageEOFException ignore) {
            // all done
        }
    }
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