TransientTopicSubscription 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.service.boundedvm;
    20
    21
    22  import javax.jms.DeliveryMode;
    23  import javax.jms.JMSException;
    24  import org.codehaus.activemq.filter.Filter;
    25  import org.codehaus.activemq.message.ActiveMQMessage;
    26  import org.codehaus.activemq.message.ConsumerInfo;
    27
    28  /***
    29   * A holder for Transient Topic consumer info and message routing
    30   *
    31   * @version $Revision: 1.2 $
    32   */
    33  public class TransientTopicSubscription  extends TransientSubscription{
    34
    35
    36      /***
    37       * Construct the TransientTopicSubscription
    38       * @param filter
    39       * @param info
    40       */
    41
    42      public TransientTopicSubscription(Filter filter,ConsumerInfo info){
    43          super(filter,info);
    44      }
    45
    46
    47      /***
    48       * determines if the Subscription is interested in the message
    49       *
    50       * @param message
    51       * @return true if this Subscription will accept the message
    52       * @throws JMSException
    53       */
    54      public boolean isTarget(ActiveMQMessage message) throws JMSException {
    55          boolean result = false;
    56          if (message != null) {
    57              result = filter.matches(message);
    58              //if we are durable, check we only send non-persistent messages
    59              if (result && consumerInfo.isDurableTopic()){
    60                  result = message.getJMSDeliveryMode() == DeliveryMode.NON_PERSISTENT;
    61              }
    62          }
    63          return result;
    64      }
    65  }