/**
*
* 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.io.impl;
import java.io.DataInput;
import java.io.IOException;
import org.codehaus.activemq.message.AbstractPacket;
import org.codehaus.activemq.message.ActiveMQDestination;
import org.codehaus.activemq.message.ActiveMQXid;
import org.codehaus.activemq.message.MessageAck;
import org.codehaus.activemq.message.Packet;
import org.codehaus.activemq.util.BitArray;
/**
* Reads a ConsumerInfo object from a Stream
*/
public class MessageAckReader extends AbstractPacketReader {
private DefaultWireFormat wireFormat;
MessageAckReader(DefaultWireFormat wf) {
this.wireFormat = wf;
}
MessageAckReader() {
}
/**
* Return the type of Packet
*
* @return integer representation of the type of Packet
*/
public int getPacketType() {
return Packet.ACTIVEMQ_MSG_ACK;
}
/**
* @return a new Packet instance
*/
public Packet createPacket() {
return new MessageAck();
}
/**
* build a Packet instance from the data input stream
*
* @param packet A Packet object
* @param dataIn the data input stream to build the packet from
* @throws IOException
*/
public void buildPacket(Packet packet, DataInput dataIn) throws IOException {
MessageAck ack = (MessageAck) packet;
BitArray ba = ack.getBitArray();
ba.readFromStream(dataIn);
boolean cachingEnabled = ba.get(MessageAck.CACHED_VALUES_INDEX);
ack.setMessageRead(ba.get(MessageAck.MESSAGE_READ_INDEX));
ack.setPersistent(ba.get(MessageAck.PERSISTENT_INDEX));
ack.setExpired(ba.get(MessageAck.EXPIRED_INDEX));
if (ba.get(AbstractPacket.RECEIPT_REQUIRED_INDEX)) {
ack.setReceiptRequired(true);
ack.setId(dataIn.readShort());
}
if (ba.get(MessageAck.EXTERNAL_MESSAGE_ID_INDEX)) {
ack.setExternalMessageId(true);
ack.setMessageID(dataIn.readUTF());
}
else {
if (cachingEnabled) {
short key = dataIn.readShort();
ack.setProducerKey((String) wireFormat.getValueFromReadCache(key));
}
else {
ack.setProducerKey(dataIn.readUTF());
}
if (ba.get(MessageAck.LONG_SEQUENCE_INDEX)) {
ack.setSequenceNumber(dataIn.readLong());
}
else {
ack.setSequenceNumber(dataIn.readInt());
}
}
if (ba.get(AbstractPacket.BROKERS_VISITED_INDEX)) {
int visitedLen = dataIn.readShort();
for (int i = 0;i < visitedLen;i++) {
ack.addBrokerVisited(dataIn.readUTF());
}
}
if (ba.get(MessageAck.TRANSACTION_ID_INDEX)) {
if (cachingEnabled) {
short key = dataIn.readShort();
ack.setTransactionId(wireFormat.getValueFromReadCache(key));
} else {
if (ba.get(MessageAck.XA_TRANS_INDEX)) {
ack.setTransactionId(ActiveMQXid.read(dataIn));
}
else {
ack.setTransactionId(super.readUTF(dataIn));
}
}
}
else {
ack.setTransactionId(null);
}
if (cachingEnabled) {
short key = dataIn.readShort();
ack.setConsumerId((String) wireFormat.getValueFromReadCache(key));
key = dataIn.readShort();
ack.setDestination((ActiveMQDestination) wireFormat.getValueFromReadCache(key));
}
else {
ack.setConsumerId(dataIn.readUTF());
ack.setDestination(ActiveMQDestination.readFromStream(dataIn));
}
}
}