001 /**
002 *
003 * Copyright 2004 Protique Ltd
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 *
017 **/
018
019
020 package org.activemq.io.impl;
021 import java.io.DataInput;
022 import java.io.IOException;
023 import org.activemq.message.ActiveMQXid;
024 import org.activemq.message.Packet;
025 import org.activemq.message.TransactionType;
026 import org.activemq.message.XATransactionInfo;
027
028 /**
029 * Reads a TransactionInfo object from a Stream
030 */
031
032 public class XATransactionInfoReader extends AbstractPacketReader {
033
034 /**
035 * Return the type of Packet
036 *
037 * @return integer representation of the type of Packet
038 */
039
040 public int getPacketType() {
041 return Packet.XA_TRANSACTION_INFO;
042 }
043
044 /**
045 * @return a new Packet instance
046 */
047
048 public Packet createPacket() {
049 return new XATransactionInfo();
050 }
051
052
053 /**
054 * build a Packet instance from the data input stream
055 *
056 * @param packet A Packet object
057 * @param dataIn the data input stream to build the packet from
058 * @throws java.io.IOException
059 */
060
061 public void buildPacket(Packet packet, DataInput dataIn) throws IOException {
062 super.buildPacket(packet, dataIn);
063 XATransactionInfo info = (XATransactionInfo) packet;
064 info.setType(dataIn.readByte());
065 switch (info.getType()) {
066 case TransactionType.START:
067 case TransactionType.PRE_COMMIT:
068 case TransactionType.COMMIT:
069 case TransactionType.RECOVER:
070 case TransactionType.ROLLBACK:
071 case TransactionType.END:
072 case TransactionType.FORGET:
073 case TransactionType.JOIN:
074 case TransactionType.COMMIT_ONE_PHASE:
075 info.setXid(ActiveMQXid.read(dataIn));
076 break;
077 case TransactionType.SET_TX_TIMEOUT:
078 info.setTransactionTimeout(dataIn.readInt());
079 break;
080 case TransactionType.XA_RECOVER:
081 //recover should take a flag.
082 break;
083 case TransactionType.GET_TX_TIMEOUT:
084 case TransactionType.GET_RM_ID:
085 break;
086 default:
087 throw new IllegalArgumentException("Invalid type code: " + info.getType());
088 }
089 }
090
091 }