001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet.documentlibrary.util;
016    
017    import com.liferay.portal.kernel.dao.orm.QueryUtil;
018    import com.liferay.portal.kernel.exception.PortalException;
019    import com.liferay.portal.kernel.exception.SystemException;
020    import com.liferay.portal.kernel.lar.PortletDataContext;
021    import com.liferay.portal.kernel.log.Log;
022    import com.liferay.portal.kernel.log.LogFactoryUtil;
023    import com.liferay.portal.kernel.messaging.DestinationNames;
024    import com.liferay.portal.kernel.messaging.MessageBusUtil;
025    import com.liferay.portal.kernel.metadata.RawMetadataProcessorUtil;
026    import com.liferay.portal.kernel.repository.model.FileEntry;
027    import com.liferay.portal.kernel.repository.model.FileVersion;
028    import com.liferay.portal.kernel.search.Indexer;
029    import com.liferay.portal.kernel.search.IndexerRegistryUtil;
030    import com.liferay.portal.kernel.security.pacl.DoPrivileged;
031    import com.liferay.portal.kernel.util.StreamUtil;
032    import com.liferay.portal.kernel.xml.Element;
033    import com.liferay.portal.repository.liferayrepository.model.LiferayFileEntry;
034    import com.liferay.portal.repository.liferayrepository.model.LiferayFileVersion;
035    import com.liferay.portal.service.ServiceContext;
036    import com.liferay.portal.util.PortalUtil;
037    import com.liferay.portlet.documentlibrary.model.DLFileEntryConstants;
038    import com.liferay.portlet.documentlibrary.service.DLFileEntryMetadataLocalServiceUtil;
039    import com.liferay.portlet.dynamicdatamapping.model.DDMStructure;
040    import com.liferay.portlet.dynamicdatamapping.service.DDMStructureLocalServiceUtil;
041    import com.liferay.portlet.dynamicdatamapping.storage.Fields;
042    
043    import java.io.File;
044    import java.io.InputStream;
045    
046    import java.util.List;
047    import java.util.Map;
048    
049    /**
050     * @author Alexander Chow
051     * @author Mika Koivisto
052     * @author Miguel Pastor
053     */
054    @DoPrivileged
055    public class RawMetadataProcessorImpl
056            implements DLProcessor, RawMetadataProcessor {
057    
058            @Override
059            public void afterPropertiesSet() {
060            }
061    
062            @Override
063            public void cleanUp(FileEntry fileEntry) {
064            }
065    
066            @Override
067            public void cleanUp(FileVersion fileVersion) {
068            }
069    
070            @Override
071            public void copy(
072                    FileVersion sourceFileVersion, FileVersion destinationFileVersion) {
073            }
074    
075            @Override
076            public void exportGeneratedFiles(
077                            PortletDataContext portletDataContext, FileEntry fileEntry,
078                            Element fileEntryElement)
079                    throws Exception {
080    
081                    return;
082            }
083    
084            @Override
085            public void generateMetadata(FileVersion fileVersion)
086                    throws SystemException {
087    
088                    long fileEntryMetadataCount =
089                            DLFileEntryMetadataLocalServiceUtil.
090                                    getFileVersionFileEntryMetadatasCount(
091                                            fileVersion.getFileVersionId());
092    
093                    if (fileEntryMetadataCount == 0) {
094                            trigger(fileVersion);
095                    }
096            }
097    
098            @Override
099            public void importGeneratedFiles(
100                            PortletDataContext portletDataContext, FileEntry fileEntry,
101                            FileEntry importedFileEntry, Element fileEntryElement)
102                    throws Exception {
103    
104                    return;
105            }
106    
107            @Override
108            public boolean isSupported(FileVersion fileVersion) {
109                    return true;
110            }
111    
112            @Override
113            public boolean isSupported(String mimeType) {
114                    return true;
115            }
116    
117            @Override
118            public void saveMetadata(FileVersion fileVersion)
119                    throws PortalException, SystemException {
120    
121                    Map<String, Fields> rawMetadataMap = null;
122    
123                    if (fileVersion instanceof LiferayFileVersion) {
124                            try {
125                                    LiferayFileVersion liferayFileVersion =
126                                            (LiferayFileVersion)fileVersion;
127    
128                                    File file = liferayFileVersion.getFile(false);
129    
130                                    rawMetadataMap = RawMetadataProcessorUtil.getRawMetadataMap(
131                                            fileVersion.getExtension(), fileVersion.getMimeType(),
132                                            file);
133                            }
134                            catch (UnsupportedOperationException uoe) {
135                            }
136                    }
137    
138                    if (rawMetadataMap == null) {
139                            InputStream inputStream = null;
140    
141                            try {
142                                    inputStream = fileVersion.getContentStream(false);
143    
144                                    if (inputStream == null) {
145                                            if (_log.isWarnEnabled()) {
146                                                    _log.warn(
147                                                            "No metadata is available for file version " +
148                                                                    fileVersion.getFileVersionId());
149                                            }
150    
151                                            return;
152                                    }
153    
154                                    rawMetadataMap = RawMetadataProcessorUtil.getRawMetadataMap(
155                                            fileVersion.getExtension(), fileVersion.getMimeType(),
156                                            inputStream);
157                            }
158                            finally {
159                                    StreamUtil.cleanUp(inputStream);
160                            }
161                    }
162    
163                    List<DDMStructure> ddmStructures =
164                            DDMStructureLocalServiceUtil.getClassStructures(
165                                    fileVersion.getCompanyId(),
166                                    PortalUtil.getClassNameId(RawMetadataProcessor.class),
167                                    QueryUtil.ALL_POS, QueryUtil.ALL_POS);
168    
169                    ServiceContext serviceContext = new ServiceContext();
170    
171                    serviceContext.setScopeGroupId(fileVersion.getGroupId());
172                    serviceContext.setUserId(fileVersion.getUserId());
173    
174                    DLFileEntryMetadataLocalServiceUtil.updateFileEntryMetadata(
175                            fileVersion.getCompanyId(), ddmStructures, 0L,
176                            fileVersion.getFileEntryId(), fileVersion.getFileVersionId(),
177                            rawMetadataMap, serviceContext);
178    
179                    FileEntry fileEntry = fileVersion.getFileEntry();
180    
181                    if (fileEntry instanceof LiferayFileEntry) {
182                            Indexer indexer = IndexerRegistryUtil.getIndexer(
183                                    DLFileEntryConstants.getClassName());
184    
185                            LiferayFileEntry liferayFileEntry = (LiferayFileEntry)fileEntry;
186    
187                            indexer.reindex(liferayFileEntry.getDLFileEntry());
188                    }
189            }
190    
191            @Override
192            public void trigger(FileVersion fileVersion) {
193                    trigger(fileVersion, fileVersion);
194            }
195    
196            @Override
197            public void trigger(
198                    FileVersion sourceFileVersion, FileVersion destinationFileVersion) {
199    
200                    MessageBusUtil.sendMessage(
201                            DestinationNames.DOCUMENT_LIBRARY_RAW_METADATA_PROCESSOR,
202                            destinationFileVersion);
203            }
204    
205            private static Log _log = LogFactoryUtil.getLog(
206                    RawMetadataProcessorImpl.class);
207    
208    }