/**
*
* Copyright 2004 Protique Ltd
*
* 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.codehaus.activemq.message;
import org.codehaus.activemq.util.BitArray;
import java.io.DataOutput;
import java.io.IOException;
/**
* Writes a ProducerInfo object to a Stream
*/
public class ActiveMQMessageWriter extends AbstractPacketWriter {
/**
* Return the type of Packet
*
* @return integer representation of the type of Packet
*/
public int getPacketType() {
return Packet.ACTIVEMQ_MESSAGE;
}
/**
* Write a Packet instance to data output stream
*
* @param packet the instance to be seralized
* @param dataOut the output stream
* @throws IOException thrown if an error occurs
*/
public void writePacket(Packet packet, DataOutput dataOut) throws IOException {
ActiveMQMessage msg = (ActiveMQMessage) packet;
byte[] payload = msg.getBodyAsBytes();
BitArray ba = msg.getBitArray();
ba.reset();
ba.set(ActiveMQMessage.CORRELATION_INDEX, msg.getJMSCorrelationID() != null);
ba.set(ActiveMQMessage.TYPE_INDEX, msg.getJMSType() != null);
ba.set(ActiveMQMessage.BROKER_NAME_INDEX, msg.getEntryBrokerName() != null);
ba.set(ActiveMQMessage.CLUSTER_NAME_INDEX, msg.getEntryClusterName() != null);
ba.set(ActiveMQMessage.TRANSACTION_ID_INDEX, msg.getTransactionId() != null);
ba.set(ActiveMQMessage.REPLY_TO_INDEX, msg.getJMSReplyTo() != null);
ba.set(ActiveMQMessage.TIMESTAMP_INDEX, msg.getJMSTimestamp() > 0);
ba.set(ActiveMQMessage.EXPIRATION_INDEX, msg.getJMSExpiration() > 0);
ba.set(ActiveMQMessage.REDELIVERED_INDEX, msg.getJMSRedelivered());
ba.set(ActiveMQMessage.XA_TRANS_INDEX, msg.isXaTransacted());
ba.set(ActiveMQMessage.CID_INDEX, msg.getConsumerNos() != null);
ba.set(ActiveMQMessage.PROPERTIES_INDEX, msg.getProperties() != null && msg.getProperties().size() > 0);
ba.set(ActiveMQMessage.PAYLOAD_INDEX, payload != null);
super.writePacket(msg, dataOut);
super.writeUTF(msg.getJMSClientID(), dataOut);
super.writeUTF(msg.getProducerID(), dataOut);
ActiveMQDestination.writeToStream((ActiveMQDestination) msg.getJMSDestination(), dataOut);
dataOut.write(msg.getJMSDeliveryMode());
dataOut.write(msg.getJMSPriority());
if (ba.get(ActiveMQMessage.CORRELATION_INDEX)) {
super.writeUTF(msg.getJMSCorrelationID(), dataOut);
}
if (ba.get(ActiveMQMessage.TYPE_INDEX)) {
super.writeUTF(msg.getJMSType(), dataOut);
}
if (ba.get(ActiveMQMessage.BROKER_NAME_INDEX)) {
super.writeUTF(msg.getEntryBrokerName(), dataOut);
}
if (ba.get(ActiveMQMessage.CLUSTER_NAME_INDEX)) {
super.writeUTF(msg.getEntryClusterName(), dataOut);
}
if (ba.get(ActiveMQMessage.TRANSACTION_ID_INDEX)) {
super.writeUTF(msg.getTransactionId(), dataOut);
}
if (ba.get(ActiveMQMessage.REPLY_TO_INDEX)) {
ActiveMQDestination.writeToStream((ActiveMQDestination) msg.getJMSReplyTo(), dataOut);
}
if (ba.get(ActiveMQMessage.TIMESTAMP_INDEX)) {
dataOut.writeLong(msg.getJMSTimestamp());
}
if (ba.get(ActiveMQMessage.EXPIRATION_INDEX)) {
dataOut.writeLong(msg.getJMSExpiration());
}
if (ba.get(ActiveMQMessage.CID_INDEX)) {
//write out consumer numbers ...
int[] cids = msg.getConsumerNos();
dataOut.writeShort(cids.length);
for (int i = 0; i < cids.length; i++) {
dataOut.writeShort(cids[i]);
}
}
if (ba.get(ActiveMQMessage.PROPERTIES_INDEX)) {
msg.writeMapProperties(msg.getProperties(), dataOut);
}
if (ba.get(ActiveMQMessage.PAYLOAD_INDEX)) {
dataOut.writeInt(payload.length);
dataOut.write(payload);
}
}
}