ActiveMQMessageReader xref

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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  package org.codehaus.activemq.message;
    20
    21  import org.codehaus.activemq.util.BitArray;
    22
    23  import java.io.DataInput;
    24  import java.io.IOException;
    25
    26  /***
    27   * Writes a ProducerInfo object to a Stream
    28   */
    29  public class ActiveMQMessageReader extends AbstractPacketReader {
    30      /***
    31       * Return the type of Packet
    32       *
    33       * @return integer representation of the type of Packet
    34       */
    35      public int getPacketType() {
    36          return Packet.ACTIVEMQ_MESSAGE;
    37      }
    38
    39      /***
    40       * @return a new Packet instance
    41       */
    42      public Packet createPacket() {
    43          return new ActiveMQMessage();
    44      }
    45
    46      /***
    47       * build a Packet instance from the data input stream
    48       *
    49       * @param packet A Packet object
    50       * @param dataIn the data input stream to build the packet from
    51       * @throws IOException
    52       */
    53      public void buildPacket(Packet packet, DataInput dataIn) throws IOException {
    54          super.buildPacket(packet, dataIn);
    55          ActiveMQMessage msg = (ActiveMQMessage) packet;
    56          msg.setJMSClientID(super.readUTF(dataIn));
    57          msg.setProducerID(super.readUTF(dataIn));
    58          msg.setJMSDestination(ActiveMQDestination.readFromStream(dataIn));
    59          msg.setJMSDeliveryMode(dataIn.readByte());
    60          msg.setJMSPriority(dataIn.readByte());
    61          BitArray ba = msg.getBitArray();
    62
    63          msg.setJMSRedelivered(ba.get(ActiveMQMessage.REDELIVERED_INDEX));
    64          msg.setXaTransacted(ba.get(ActiveMQMessage.XA_TRANS_INDEX));
    65
    66          if (ba.get(ActiveMQMessage.CORRELATION_INDEX)) {
    67              msg.setJMSCorrelationID(super.readUTF(dataIn));
    68          }
    69          if (ba.get(ActiveMQMessage.TYPE_INDEX)) {
    70              msg.setJMSType(super.readUTF(dataIn));
    71          }
    72          if (ba.get(ActiveMQMessage.BROKER_NAME_INDEX)) {
    73              msg.setEntryBrokerName(super.readUTF(dataIn));
    74          }
    75          if (ba.get(ActiveMQMessage.CLUSTER_NAME_INDEX)) {
    76              msg.setEntryClusterName(super.readUTF(dataIn));
    77          }
    78          if (ba.get(ActiveMQMessage.TRANSACTION_ID_INDEX)) {
    79              msg.setTransactionId(super.readUTF(dataIn));
    80          }
    81          if (ba.get(ActiveMQMessage.REPLY_TO_INDEX)) {
    82              msg.setJMSReplyTo(ActiveMQDestination.readFromStream(dataIn));
    83          }
    84          if (ba.get(ActiveMQMessage.TIMESTAMP_INDEX)) {
    85              msg.setJMSTimestamp(dataIn.readLong());
    86          }
    87          if (ba.get(ActiveMQMessage.EXPIRATION_INDEX)) {
    88              msg.setJMSExpiration(dataIn.readLong());
    89          }
    90          if (ba.get(ActiveMQMessage.CID_INDEX)) {
    91              int cidlength = dataIn.readShort();
    92              if (cidlength > 0) {
    93                  int[] cids = new int[cidlength];
    94                  for (int i = 0; i < cids.length; i++) {
    95                      cids[i] = dataIn.readShort();
    96                  }
    97                  msg.setConsumerNos(cids);
    98              }
    99          }
    100         if (ba.get(ActiveMQMessage.PROPERTIES_INDEX)) {
    101             msg.setProperties(msg.readMapProperties(dataIn));
    102         }
    103         if (ba.get(ActiveMQMessage.PAYLOAD_INDEX)) {
    104             int payloadLength = dataIn.readInt();
    105             if (payloadLength >= 0) {
    106                 byte[] payload = new byte[payloadLength];
    107                 dataIn.readFully(payload);
    108                 msg.setBodyAsBytes(payload);
    109             }
    110         }
    111     }
    112 }