MessageAvailableListener


1   /**
2    *
3    * Licensed to the Apache Software Foundation (ASF) under one or more
4    * contributor license agreements.  See the NOTICE file distributed with
5    * this work for additional information regarding copyright ownership.
6    * The ASF licenses this file to You under the Apache License, Version 2.0
7    * (the "License"); you may not use this file except in compliance with
8    * the License.  You may obtain a copy of the License at
9    *
10   * http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.activemq;
19  
20  import javax.jms.MessageConsumer  ;
21  
22  /**
23   * A listener which is notified if a message is available for processing via the
24   * receive methods. Typically on receiving this notification you can call 
25   * {@link MessageConsumer#receiveNoWait()} to get the new message immediately.
26   * 
27   * Note that this notification just indicates a message is available for synchronous consumption,
28   * it does not actually consume the message.
29   * 
30   * @version $Revision: 1.1 $
31   */
32  public interface MessageAvailableListener {
33  
34      void onMessageAvailable(MessageConsumer   consumer);
35  
36  }
37

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