1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.messaging;
24  
25  /**
26   * <a href="ObjectResponseMessageListener.java.html"><b><i>View Source</i></b>
27   * </a>
28   *
29   * @author Brian Wing Shun Chan
30   *
31   */
32  public class ObjectResponseMessageListener implements MessageListener {
33  
34      public ObjectResponseMessageListener(
35          Destination destination, Destination responseDestination,
36          String responseId, long timeout) {
37  
38          _destination = destination;
39          _responseDestination = responseDestination;
40          _responseId = responseId;
41          _timeout = timeout;
42      }
43  
44      public synchronized Object send(Message message)
45          throws MessageBusException {
46  
47          message.setResponseDestination(_responseDestination.getName());
48          message.setResponseId(_responseId);
49  
50          _destination.send(message);
51  
52          try {
53              wait(_timeout);
54          }
55          catch (InterruptedException ie) {
56              throw new MessageBusException(
57                  "Unable to receive response for request", ie);
58          }
59  
60          if (_responseValue == null) {
61              throw new MessageBusException(
62                  "No reply received for request: " + message);
63          }
64  
65          return _responseValue;
66      }
67  
68      public synchronized void receive(Object message) {
69          receive((Message)message);
70      }
71  
72      public void receive(String message) {
73          throw new UnsupportedOperationException();
74      }
75  
76      protected void receive(Message message) {
77          if (message.getResponseId().equals(_responseId)) {
78              _responseValue = message.getResponseValue();
79  
80              notify();
81          }
82      }
83  
84      private Destination _destination;
85      private Destination _responseDestination;
86      private String _responseId;
87      private long _timeout;
88      private Object _responseValue;
89  
90  }