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    1   /***
    2    *
    3    * Copyright 2004 Protique Ltd
    4    *
    5    * Licensed under the Apache License, Version 2.0 (the "License");
    6    * you may not use this file except in compliance with the License.
    7    * You may obtain a copy of the License at
    8    *
    9    * http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   *
    17   **/
    18
    19
    20  package org.codehaus.activemq.message;
    21
    22  import java.io.DataInput;
    23  import java.io.IOException;
    24
    25  /***
    26   * Reads a TransactionInfo object from a Stream
    27   */
    28
    29  public class XATransactionInfoReader extends AbstractPacketReader {
    30
    31      /***
    32       * Return the type of Packet
    33       *
    34       * @return integer representation of the type of Packet
    35       */
    36
    37      public int getPacketType() {
    38          return Packet.XA_TRANSACTION_INFO;
    39      }
    40
    41      /***
    42       * @return a new Packet instance
    43       */
    44
    45      public Packet createPacket() {
    46          return new XATransactionInfo();
    47      }
    48
    49
    50      /***
    51       * build a Packet instance from the data input stream
    52       *
    53       * @param packet A Packet object
    54       * @param dataIn the data input stream to build the packet from
    55       * @throws java.io.IOException
    56       */
    57
    58      public void buildPacket(Packet packet, DataInput dataIn) throws IOException {
    59          super.buildPacket(packet, dataIn);
    60          XATransactionInfo info = (XATransactionInfo) packet;
    61          info.setType(dataIn.readByte());
    62          switch (info.getType()) {
    63              case TransactionType.START:
    64              case TransactionType.PRE_COMMIT:
    65              case TransactionType.COMMIT:
    66              case TransactionType.RECOVER:
    67              case TransactionType.ROLLBACK:
    68              case TransactionType.END:
    69              case TransactionType.FORGET:
    70              case TransactionType.JOIN:
    71              case TransactionType.COMMIT_ONE_PHASE:
    72                  info.setXid(ActiveMQXid.read(dataIn));
    73                  break;
    74              case TransactionType.SET_TX_TIMEOUT:
    75                  info.setTransactionTimeout(dataIn.readInt());
    76                  break;
    77              case TransactionType.XA_RECOVER:
    78                  //recover should take a flag.
    79                  break;
    80              case TransactionType.GET_TX_TIMEOUT:
    81              case TransactionType.GET_RM_ID:
    82                  break;
    83              default:
    84                  throw new IllegalArgumentException("Invalid type code: " + info.getType());
    85          }
    86      }
    87
    88  }