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.portlet.messageboards.util;
24  
25  import com.liferay.portal.kernel.search.DocumentSummary;
26  import com.liferay.portal.kernel.search.SearchException;
27  import com.liferay.portal.kernel.util.GetterUtil;
28  import com.liferay.portal.kernel.util.HtmlUtil;
29  import com.liferay.portal.kernel.util.StringUtil;
30  import com.liferay.portal.lucene.LuceneFields;
31  import com.liferay.portal.lucene.LuceneUtil;
32  import com.liferay.portal.util.PortletKeys;
33  import com.liferay.portlet.messageboards.service.MBCategoryLocalServiceUtil;
34  
35  import java.io.IOException;
36  
37  import javax.portlet.PortletURL;
38  
39  import org.apache.lucene.document.Document;
40  import org.apache.lucene.document.Field;
41  import org.apache.lucene.index.IndexReader;
42  import org.apache.lucene.index.IndexWriter;
43  import org.apache.lucene.index.Term;
44  import org.apache.lucene.queryParser.ParseException;
45  import org.apache.lucene.search.BooleanQuery;
46  import org.apache.lucene.search.Hits;
47  import org.apache.lucene.search.Searcher;
48  
49  /**
50   * <a href="Indexer.java.html"><b><i>View Source</i></b></a>
51   *
52   * @author Brian Wing Shun Chan
53   * @author Harry Mark
54   *
55   */
56  public class Indexer implements com.liferay.portal.kernel.search.Indexer {
57  
58      public static final String PORTLET_ID = PortletKeys.MESSAGE_BOARDS;
59  
60      public static void addMessage(
61              long companyId, long groupId, String userName, long categoryId,
62              long threadId, long messageId, String title, String content,
63              String[] tagsEntries)
64          throws IOException {
65  
66          Document doc = getAddMessageDocument(
67              companyId, groupId, userName, categoryId, threadId, messageId,
68              title, content, tagsEntries);
69  
70          IndexWriter writer = null;
71  
72          try {
73              writer = LuceneUtil.getWriter(companyId);
74  
75              writer.addDocument(doc);
76          }
77          finally {
78              if (writer != null) {
79                  LuceneUtil.write(companyId);
80              }
81          }
82      }
83  
84      public static void deleteMessage(long companyId, long messageId)
85          throws IOException {
86  
87          LuceneUtil.deleteDocuments(
88              companyId,
89              new Term(
90                  LuceneFields.UID, LuceneFields.getUID(PORTLET_ID, messageId)));
91      }
92  
93      public static void deleteMessages(long companyId, long threadId)
94          throws IOException, ParseException {
95  
96          BooleanQuery booleanQuery = new BooleanQuery();
97  
98          LuceneUtil.addRequiredTerm(
99              booleanQuery, LuceneFields.PORTLET_ID, PORTLET_ID);
100 
101         LuceneUtil.addRequiredTerm(booleanQuery, "threadId", threadId);
102 
103         Searcher searcher = LuceneUtil.getSearcher(companyId);
104 
105         try {
106             Hits hits = searcher.search(booleanQuery);
107 
108             if (hits.length() > 0) {
109                 IndexReader reader = null;
110 
111                 try {
112                     LuceneUtil.acquireLock(companyId);
113 
114                     reader = LuceneUtil.getReader(companyId);
115 
116                     for (int i = 0; i < hits.length(); i++) {
117                         Document doc = hits.doc(i);
118 
119                         Field field = doc.getField(LuceneFields.UID);
120 
121                         reader.deleteDocuments(
122                             new Term(LuceneFields.UID, field.stringValue()));
123                     }
124                 }
125                 finally {
126                     if (reader != null) {
127                         reader.close();
128                     }
129 
130                     LuceneUtil.releaseLock(companyId);
131                 }
132             }
133         }
134         finally {
135             LuceneUtil.closeSearcher(searcher);
136         }
137     }
138 
139     public static Document getAddMessageDocument(
140         long companyId, long groupId, String userName, long categoryId,
141         long threadId, long messageId, String title, String content,
142         String[] tagsEntries) {
143 
144         content = BBCodeUtil.getHTML(content);
145         content = HtmlUtil.extractText(content);
146 
147         Document doc = new Document();
148 
149         LuceneUtil.addKeyword(
150             doc, LuceneFields.UID, LuceneFields.getUID(PORTLET_ID, messageId));
151 
152         LuceneUtil.addKeyword(doc, LuceneFields.COMPANY_ID, companyId);
153         LuceneUtil.addKeyword(doc, LuceneFields.PORTLET_ID, PORTLET_ID);
154         LuceneUtil.addKeyword(doc, LuceneFields.GROUP_ID, groupId);
155 
156         LuceneUtil.addText(doc, LuceneFields.USER_NAME, userName);
157         LuceneUtil.addText(doc, LuceneFields.TITLE, title);
158         LuceneUtil.addText(doc, LuceneFields.CONTENT, content);
159 
160         LuceneUtil.addModifiedDate(doc);
161 
162         LuceneUtil.addKeyword(doc, "categoryId", categoryId);
163         LuceneUtil.addKeyword(doc, "threadId", threadId);
164         LuceneUtil.addKeyword(doc, "messageId", messageId);
165 
166         LuceneUtil.addKeyword(doc, LuceneFields.TAG_ENTRY, tagsEntries);
167 
168         return doc;
169     }
170 
171     public static void updateMessage(
172             long companyId, long groupId, String userName, long categoryId,
173             long threadId, long messageId, String title, String content,
174             String[] tagsEntries)
175         throws IOException {
176 
177         try {
178             deleteMessage(companyId, messageId);
179         }
180         catch (IOException ioe) {
181         }
182 
183         addMessage(
184             companyId, groupId, userName, categoryId, threadId, messageId,
185             title, content, tagsEntries);
186     }
187 
188     public DocumentSummary getDocumentSummary(
189         com.liferay.portal.kernel.search.Document doc, PortletURL portletURL) {
190 
191         // Title
192 
193         String title = doc.get(LuceneFields.TITLE);
194 
195         // Content
196 
197         String content = doc.get(LuceneFields.CONTENT);
198 
199         content = StringUtil.shorten(content, 200);
200 
201         // URL
202 
203         long messageId = GetterUtil.getLong(doc.get("messageId"));
204 
205         portletURL.setParameter(
206             "struts_action", "/message_boards/view_message");
207         portletURL.setParameter("messageId", String.valueOf(messageId));
208 
209         return new DocumentSummary(title, content, portletURL);
210     }
211 
212     public void reIndex(String[] ids) throws SearchException {
213         try {
214             MBCategoryLocalServiceUtil.reIndex(ids);
215         }
216         catch (Exception e) {
217             throw new SearchException(e);
218         }
219     }
220 
221 }