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;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.messaging.DestinationNames;
28  import com.liferay.portal.kernel.messaging.MessageBusException;
29  import com.liferay.portal.kernel.messaging.MessageBusUtil;
30  import com.liferay.portal.kernel.search.IndexSearcher;
31  import com.liferay.portal.kernel.search.IndexWriter;
32  import com.liferay.portal.kernel.search.SearchEngine;
33  import com.liferay.portal.kernel.search.messaging.SearchRequest;
34  
35  /**
36   * <a href="SearchEngineImpl.java.html"><b><i>View Source</i></b></a>
37   *
38   * @author Bruno Farache
39   *
40   */
41  public class SearchEngineImpl implements SearchEngine {
42  
43      public String getName() {
44          throw new UnsupportedOperationException();
45      }
46  
47      public IndexSearcher getSearcher() {
48          return _searcher;
49      }
50  
51      public IndexWriter getWriter() {
52          return _writer;
53      }
54  
55      public boolean isIndexReadOnly() {
56          if (_indexReadOnly != null) {
57              return _indexReadOnly.booleanValue();
58          }
59  
60          try {
61              SearchRequest searchRequest = new SearchRequest();
62  
63              searchRequest.setCommand(SearchRequest.COMMAND_INDEX_ONLY);
64  
65              _indexReadOnly = (Boolean)MessageBusUtil.sendSynchronousMessage(
66                  DestinationNames.SEARCH_READER, searchRequest);
67  
68              if (_indexReadOnly == null) {
69                  _indexReadOnly = Boolean.FALSE;
70              }
71  
72              return _indexReadOnly.booleanValue();
73          }
74          catch (MessageBusException mbe) {
75              if (_log.isWarnEnabled()) {
76                  _log.warn("Unable to check index status", mbe);
77              }
78  
79              return false;
80          }
81      }
82  
83      public boolean isRegistered() {
84          throw new UnsupportedOperationException();
85      }
86  
87      public void register(String name) {
88          SearchRequest searchRequest = new SearchRequest();
89  
90          searchRequest.setCommand(SearchRequest.COMMAND_REGISTER);
91          searchRequest.setId(name);
92  
93          MessageBusUtil.sendMessage(
94              DestinationNames.SEARCH_WRITER, searchRequest);
95      }
96  
97      public void setSearcher(IndexSearcher searcher) {
98          _searcher = searcher;
99      }
100 
101     public void setWriter(IndexWriter writer) {
102         _writer = writer;
103     }
104 
105     public void unregister(String fromName) {
106         SearchRequest searchRequest = new SearchRequest();
107 
108         searchRequest.setCommand(SearchRequest.COMMAND_UNREGISTER);
109         searchRequest.setId(fromName);
110 
111         MessageBusUtil.sendMessage(
112             DestinationNames.SEARCH_WRITER, searchRequest);
113     }
114 
115     private static Log _log = LogFactoryUtil.getLog(SearchEngineImpl.class);
116 
117     private IndexSearcher _searcher;
118     private IndexWriter _writer;
119     private Boolean _indexReadOnly;
120 
121 }