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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* 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.apache.qpid.client.message;
import org.apache.qpid.AMQException;
import org.apache.qpid.framing.ContentBody;
import org.apache.qpid.framing.ContentHeaderBody;
import org.apache.log4j.Logger;
import org.apache.mina.common.ByteBuffer;
import javax.jms.JMSException;
import java.util.Iterator;
import java.util.List;
public abstract class AbstractJMSMessageFactory implements MessageFactory
{
private static final Logger _logger = Logger.getLogger(AbstractJMSMessageFactory.class);
protected abstract AbstractJMSMessage createMessage(long messageNbr, ByteBuffer data,
ContentHeaderBody contentHeader) throws AMQException;
protected AbstractJMSMessage createMessageWithBody(long messageNbr,
ContentHeaderBody contentHeader,
List bodies) throws AMQException
{
ByteBuffer data;
// we optimise the non-fragmented case to avoid copying
if (bodies != null && bodies.size() == 1)
{
_logger.debug("Non-fragmented message body (bodySize=" + contentHeader.bodySize +")");
data = ((ContentBody)bodies.get(0)).payload;
}
else
{
_logger.debug("Fragmented message body (" + bodies.size() + " frames, bodySize=" + contentHeader.bodySize + ")");
data = ByteBuffer.allocate((int)contentHeader.bodySize); // XXX: Is cast a problem?
final Iterator it = bodies.iterator();
while (it.hasNext())
{
ContentBody cb = (ContentBody) it.next();
data.put(cb.payload);
cb.payload.release();
}
data.flip();
}
_logger.debug("Creating message from buffer with position=" + data.position() + " and remaining=" + data.remaining());
return createMessage(messageNbr, data, contentHeader);
}
public AbstractJMSMessage createMessage(long messageNbr, boolean redelivered,
ContentHeaderBody contentHeader,
List bodies) throws JMSException, AMQException
{
final AbstractJMSMessage msg = createMessageWithBody(messageNbr, contentHeader, bodies);
msg.setJMSRedelivered(redelivered);
return msg;
}
}
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