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.bean.PortalBeanLocatorUtil;
26  import com.liferay.portal.kernel.messaging.BaseDestinationEventListener;
27  import com.liferay.portal.kernel.messaging.DestinationNames;
28  import com.liferay.portal.kernel.messaging.MessageBusUtil;
29  import com.liferay.portal.kernel.messaging.MessageListener;
30  import com.liferay.portal.kernel.search.BooleanQueryFactory;
31  import com.liferay.portal.kernel.search.BooleanQueryFactoryUtil;
32  import com.liferay.portal.kernel.search.TermQueryFactory;
33  import com.liferay.portal.kernel.search.TermQueryFactoryUtil;
34  import com.liferay.portal.kernel.search.messaging.BaseSearchEngineMessageListener;
35  import com.liferay.portal.kernel.search.messaging.SearchReaderMessageListener;
36  import com.liferay.portal.kernel.search.messaging.SearchWriterMessageListener;
37  import com.liferay.portal.search.lucene.LuceneSearchEngineImpl;
38  
39  /**
40   * <a href="SearchEngineDestinationEventListener.java.html"><b><i>View Source
41   * </i></b></a>
42   *
43   * @author Michael C. Han
44   */
45  public class SearchEngineDestinationEventListener
46      extends BaseDestinationEventListener {
47  
48      public SearchEngineDestinationEventListener() {
49      }
50  
51      /**
52       * @deprecated
53       */
54      public SearchEngineDestinationEventListener(
55          SearchReaderMessageListener searchReaderMessageListener,
56          SearchWriterMessageListener searchWriterMessageListener) {
57  
58          _searchReaderMessageListener = searchReaderMessageListener;
59          _searchWriterMessageListener = searchWriterMessageListener;
60      }
61  
62      public void messageListenerRegistered(
63          String destinationName, MessageListener messageListener) {
64  
65          if (!isProceed(destinationName, messageListener)) {
66              return;
67          }
68  
69          MessageBusUtil.unregisterMessageListener(
70              DestinationNames.SEARCH_READER, _searchReaderMessageListener);
71          MessageBusUtil.unregisterMessageListener(
72              DestinationNames.SEARCH_WRITER, _searchWriterMessageListener);
73  
74          BaseSearchEngineMessageListener baseSearchEngineMessageListener =
75              (BaseSearchEngineMessageListener)messageListener;
76  
77          if (!baseSearchEngineMessageListener.getSearchEngineName().contains(
78                  LuceneSearchEngineImpl.NAME)) {
79  
80              setBooleanQueryFactory(
81                  new com.liferay.portal.search.generic.
82                      BooleanQueryFactoryImpl());
83              setTermQueryFactory(
84                  new com.liferay.portal.search.generic.TermQueryFactoryImpl());
85          }
86      }
87  
88      public void messageListenerUnregistered(
89          String destinationName, MessageListener messageListener) {
90  
91          if (!isProceed(destinationName, messageListener)) {
92              return;
93          }
94  
95          MessageBusUtil.registerMessageListener(
96              DestinationNames.SEARCH_READER, _searchReaderMessageListener);
97          MessageBusUtil.registerMessageListener(
98              DestinationNames.SEARCH_WRITER, _searchWriterMessageListener);
99  
100         BaseSearchEngineMessageListener baseSearchEngineMessageListener =
101             (BaseSearchEngineMessageListener)messageListener;
102 
103         if (!baseSearchEngineMessageListener.getSearchEngineName().contains(
104                 LuceneSearchEngineImpl.NAME)) {
105 
106             setBooleanQueryFactory(
107                 new com.liferay.portal.search.lucene.BooleanQueryFactoryImpl());
108             setTermQueryFactory(
109                 new com.liferay.portal.search.lucene.TermQueryFactoryImpl());
110         }
111     }
112 
113     public void setSearchReaderMessageListener(
114         SearchReaderMessageListener searchReaderMessageListener) {
115 
116         _searchReaderMessageListener = searchReaderMessageListener;
117     }
118 
119     public void setSearchWriterMessageListener(
120         SearchWriterMessageListener searchWriterMessageListener) {
121 
122         _searchWriterMessageListener = searchWriterMessageListener;
123     }
124 
125     protected boolean isProceed(
126         String destinationName, MessageListener messageListener) {
127 
128         if ((!destinationName.equals(DestinationNames.SEARCH_READER)) ||
129             (messageListener == _searchReaderMessageListener) ||
130             !(messageListener instanceof SearchReaderMessageListener)) {
131 
132             return false;
133         }
134         else {
135             return true;
136         }
137     }
138 
139     protected void setBooleanQueryFactory(
140         BooleanQueryFactory booleanQueryFactory) {
141 
142         BooleanQueryFactoryUtil booleanQueryFactoryUtil =
143             (BooleanQueryFactoryUtil)PortalBeanLocatorUtil.locate(
144                 BooleanQueryFactoryUtil.class.getName());
145 
146         booleanQueryFactoryUtil.setBooleanQueryFactory(booleanQueryFactory);
147     }
148 
149     protected void setTermQueryFactory(TermQueryFactory termQueryFactory) {
150         TermQueryFactoryUtil termQueryFactoryUtil =
151             (TermQueryFactoryUtil)PortalBeanLocatorUtil.locate(
152                 TermQueryFactoryUtil.class.getName());
153 
154         termQueryFactoryUtil.setTermQueryFactory(termQueryFactory);
155     }
156 
157     private SearchReaderMessageListener _searchReaderMessageListener;
158     private SearchWriterMessageListener _searchWriterMessageListener;
159 
160 }