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.wiki.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.wiki.service.WikiNodeLocalServiceUtil;
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.WIKI;
59  
60      public static void addPage(
61              long companyId, long groupId, long nodeId, String title,
62              String content, String[] tagsEntries)
63          throws IOException {
64  
65          try {
66              deletePage(companyId, nodeId, title);
67          }
68          catch (IOException ioe) {
69          }
70  
71          Document doc = getAddPageDocument(
72              companyId, groupId, nodeId, title, content, tagsEntries);
73  
74          IndexWriter writer = null;
75  
76          try {
77              writer = LuceneUtil.getWriter(companyId);
78  
79              writer.addDocument(doc);
80          }
81          finally {
82              if (writer != null) {
83                  LuceneUtil.write(companyId);
84              }
85          }
86      }
87  
88      public static void deletePage(long companyId, long nodeId, String title)
89          throws IOException {
90  
91          LuceneUtil.deleteDocuments(
92              companyId,
93              new Term(
94                  LuceneFields.UID,
95                  LuceneFields.getUID(PORTLET_ID, nodeId, title)));
96      }
97  
98      public static void deletePages(long companyId, long nodeId)
99          throws IOException, ParseException {
100 
101         BooleanQuery booleanQuery = new BooleanQuery();
102 
103         LuceneUtil.addRequiredTerm(
104             booleanQuery, LuceneFields.PORTLET_ID, PORTLET_ID);
105 
106         LuceneUtil.addRequiredTerm(booleanQuery, "nodeId", nodeId);
107 
108         Searcher searcher = LuceneUtil.getSearcher(companyId);
109 
110         try {
111             Hits hits = searcher.search(booleanQuery);
112 
113             if (hits.length() > 0) {
114                 IndexReader reader = null;
115 
116                 try {
117                     LuceneUtil.acquireLock(companyId);
118 
119                     reader = LuceneUtil.getReader(companyId);
120 
121                     for (int i = 0; i < hits.length(); i++) {
122                         Document doc = hits.doc(i);
123 
124                         Field field = doc.getField(LuceneFields.UID);
125 
126                         reader.deleteDocuments(
127                             new Term(LuceneFields.UID, field.stringValue()));
128                     }
129                 }
130                 finally {
131                     if (reader != null) {
132                         reader.close();
133                     }
134 
135                     LuceneUtil.releaseLock(companyId);
136                 }
137             }
138         }
139         finally {
140             LuceneUtil.closeSearcher(searcher);
141         }
142     }
143 
144     public static Document getAddPageDocument(
145         long companyId, long groupId, long nodeId, String title,
146         String content, String[] tagsEntries) {
147 
148         content = HtmlUtil.extractText(content);
149 
150         Document doc = new Document();
151 
152         LuceneUtil.addKeyword(
153             doc, LuceneFields.UID,
154             LuceneFields.getUID(PORTLET_ID, nodeId, title));
155 
156         LuceneUtil.addKeyword(doc, LuceneFields.COMPANY_ID, companyId);
157         LuceneUtil.addKeyword(doc, LuceneFields.PORTLET_ID, PORTLET_ID);
158         LuceneUtil.addKeyword(doc, LuceneFields.GROUP_ID, groupId);
159 
160         LuceneUtil.addText(doc, LuceneFields.TITLE, title);
161         LuceneUtil.addText(doc, LuceneFields.CONTENT, content);
162 
163         LuceneUtil.addModifiedDate(doc);
164 
165         LuceneUtil.addKeyword(doc, "nodeId", nodeId);
166 
167         LuceneUtil.addKeyword(doc, LuceneFields.TAG_ENTRY, tagsEntries);
168 
169         return doc;
170     }
171 
172     public static void updatePage(
173             long companyId, long groupId, long nodeId, String title,
174             String content, String[] tagsEntries)
175         throws IOException {
176 
177         try {
178             deletePage(companyId, nodeId, title);
179         }
180         catch (IOException ioe) {
181         }
182 
183         addPage(companyId, groupId, nodeId, title, content, tagsEntries);
184     }
185 
186     public DocumentSummary getDocumentSummary(
187         com.liferay.portal.kernel.search.Document doc, PortletURL portletURL) {
188 
189         // Title
190 
191         String title = doc.get(LuceneFields.TITLE);
192 
193         // Content
194 
195         String content = doc.get(LuceneFields.CONTENT);
196 
197         content = StringUtil.shorten(content, 200);
198 
199         // URL
200 
201         long nodeId = GetterUtil.getLong(doc.get("nodeId"));
202 
203         portletURL.setParameter("struts_action", "/wiki/view");
204         portletURL.setParameter("nodeId", String.valueOf(nodeId));
205         portletURL.setParameter("title", title);
206 
207         return new DocumentSummary(title, content, portletURL);
208     }
209 
210     public void reIndex(String[] ids) throws SearchException {
211         try {
212             WikiNodeLocalServiceUtil.reIndex(ids);
213         }
214         catch (Exception e) {
215             throw new SearchException(e);
216         }
217     }
218 
219 }