1   /**
2    * Copyright (c) 2000-2009 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.search.lucene.messaging;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.messaging.Message;
28  import com.liferay.portal.kernel.messaging.MessageListener;
29  import com.liferay.portal.kernel.messaging.sender.MessageSender;
30  import com.liferay.portal.kernel.search.Hits;
31  import com.liferay.portal.kernel.search.SearchEngine;
32  import com.liferay.portal.kernel.search.messaging.SearchRequest;
33  
34  /**
35   * <a href="LuceneReaderMessageListener.java.html"><b><i>View Source</i></b></a>
36   *
37   * @author Bruno Farache
38   *
39   */
40  public class LuceneReaderMessageListener implements MessageListener {
41  
42      public LuceneReaderMessageListener(MessageSender messageSender) {
43          _messageSender = messageSender;
44      }
45  
46      public void receive(Message message) {
47          try {
48              doReceive(message);
49          }
50          catch (Exception e) {
51              _log.error("Unable to process message " + message, e);
52          }
53      }
54  
55      public void setSearchEngine(SearchEngine searchEngine) {
56          _searchEngine = searchEngine;
57      }
58  
59      protected void doCommandSearch(Message message, SearchRequest searchRequest)
60          throws Exception {
61  
62          Hits hits = _searchEngine.getSearcher().search(
63              searchRequest.getCompanyId(), searchRequest.getQuery(),
64              searchRequest.getSorts(), searchRequest.getStart(),
65              searchRequest.getEnd());
66  
67          message.setPayload(hits);
68  
69          _messageSender.send(message.getResponseDestination(), message);
70      }
71  
72      protected void doReceive(Message message) throws Exception {
73          Object payload = message.getPayload();
74  
75          if (!_searchEngine.isRegistered() ||
76              !(payload instanceof SearchRequest)) {
77  
78              return;
79          }
80  
81          SearchRequest searchRequest = (SearchRequest)payload;
82  
83          String command = searchRequest.getCommand();
84  
85          if (command.equals(SearchRequest.COMMAND_SEARCH)) {
86              doCommandSearch(message, searchRequest);
87          }
88      }
89  
90      private static Log _log =
91          LogFactoryUtil.getLog(LuceneReaderMessageListener.class);
92  
93      private MessageSender _messageSender;
94      private SearchEngine _searchEngine;
95  
96  }