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Java > Open Source Codes > org > opencms > search > documents > CmsDocumentPlainText


1 /*
2  * File : $Source: /usr/local/cvs/opencms/src/org/opencms/search/documents/CmsDocumentPlainText.java,v $
3  * Date : $Date: 2005/06/23 11:11:29 $
4  * Version: $Revision: 1.10 $
5  *
6  * This library is part of OpenCms -
7  * the Open Source Content Mananagement System
8  *
9  * Copyright (c) 2005 Alkacon Software GmbH (http://www.alkacon.com)
10  *
11  * This library is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Lesser General Public
13  * License as published by the Free Software Foundation; either
14  * version 2.1 of the License, or (at your option) any later version.
15  *
16  * This library is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  * Lesser General Public License for more details.
20  *
21  * For further information about Alkacon Software GmbH, please see the
22  * company website: http://www.alkacon.com
23  *
24  * For further information about OpenCms, please see the
25  * project website: http://www.opencms.org
26  *
27  * You should have received a copy of the GNU Lesser General Public
28  * License along with this library; if not, write to the Free Software
29  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30  */
31
32 package org.opencms.search.documents;
33
34 import org.opencms.file.CmsFile;
35 import org.opencms.file.CmsObject;
36 import org.opencms.file.CmsProperty;
37 import org.opencms.file.CmsPropertyDefinition;
38 import org.opencms.file.CmsResource;
39 import org.opencms.main.CmsException;
40 import org.opencms.main.OpenCms;
41 import org.opencms.search.A_CmsIndexResource;
42 import org.opencms.search.CmsIndexException;
43 import org.opencms.search.extractors.CmsExtractionResult;
44 import org.opencms.search.extractors.I_CmsExtractionResult;
45
46 /**
47  * Lucene document factory class to extract index data from a cms resource
48  * containing plain text data.<p>
49  *
50  * @author Carsten Weinholz
51  *
52  * @version $Revision: 1.10 $
53  *
54  * @since 6.0.0
55  */
56 public class CmsDocumentPlainText extends A_CmsVfsDocument {
57
58     /**
59      * Creates a new instance of this lucene document factory.<p>
60      *
61      * @param name name of the documenttype
62      */
63     public CmsDocumentPlainText(String JavaDoc name) {
64
65         super(name);
66     }
67
68     /**
69      * Returns the raw text content of a given vfs resource containing plain text data.<p>
70      *
71      * @see org.opencms.search.documents.A_CmsVfsDocument#extractContent(org.opencms.file.CmsObject, org.opencms.search.A_CmsIndexResource, java.lang.String)
72      */
73     public I_CmsExtractionResult extractContent(CmsObject cms, A_CmsIndexResource indexResource, String JavaDoc language)
74     throws CmsException {
75
76         CmsResource resource = (CmsResource)indexResource.getData();
77         String JavaDoc result = null;
78
79         try {
80             String JavaDoc path = cms.getRequestContext().removeSiteRoot(resource.getRootPath());
81             CmsProperty extractionClass = cms.readPropertyObject(
82                 path,
83                 CmsPropertyDefinition.PROPERTY_SEARCH_EXTRACTIONCLASS,
84                 true);
85             if (extractionClass != CmsProperty.getNullProperty()) {
86                 Object JavaDoc ext = Class.forName(extractionClass.getValue()).newInstance();
87
88                 if (ext instanceof I_CmsSearchExtractor) {
89
90                     I_CmsSearchExtractor extractor = (I_CmsSearchExtractor)ext;
91                     return extractor.extractContent(cms, indexResource, language);
92                 } else {
93                     throw new CmsIndexException(Messages.get().container(
94                         Messages.ERR_EXTRACTION_CLASS_2,
95                         resource.getRootPath(),
96                         ext.getClass().getName()));
97
98                 }
99             } else {
100                 CmsProperty encoding = cms.readPropertyObject(
101                     path,
102                     CmsPropertyDefinition.PROPERTY_CONTENT_ENCODING,
103                     true);
104                 CmsFile file = readFile(cms, resource);
105                 result = new String JavaDoc(file.getContents(), encoding.getValue(OpenCms.getSystemInfo().getDefaultEncoding()));
106                 return new CmsExtractionResult(result);
107             }
108         } catch (Exception JavaDoc e) {
109             throw new CmsIndexException(
110                 Messages.get().container(Messages.ERR_TEXT_EXTRACTION_1, resource.getRootPath()),
111                 e);
112         }
113     }
114 }
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