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0e19812dbc
Convert some more metadata extractors to using Tika, and enable the use of the Tika auto-detection parser on any documents without an explicitly defined extractor. git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@20667 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
131 lines
4.7 KiB
Java
131 lines
4.7 KiB
Java
/*
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* Copyright (C) 2005-2010 Alfresco Software Limited.
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*
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* This file is part of Alfresco
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.alfresco.repo.content.metadata;
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import java.io.Serializable;
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import java.util.ArrayList;
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import java.util.Map;
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import org.alfresco.repo.content.MimetypeMap;
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import org.apache.tika.metadata.Metadata;
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import org.apache.tika.metadata.XMPDM;
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import org.apache.tika.parser.Parser;
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import org.apache.tika.parser.mp3.Mp3Parser;
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/**
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* Extracts the following values from MP3 files:
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* <pre>
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* <b>songTitle:</b> -- {music}songTitle, cm:title
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* <b>albumTitle:</b> -- {music}albumTitle
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* <b>artist:</b> -- {music}artist, cm:author
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* <b>description:</b> -- cm:description
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* <b>comment:</b> -- {music}comment
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* <b>yearReleased:</b> -- {music}yearReleased
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* <b>trackNumber:</b> -- {music}trackNumber
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* <b>genre:</b> -- {music}genre
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* <b>composer:</b> -- {music}composer
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* <b>lyrics:</b> -- {music}lyrics
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* </pre>
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*
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* TODO Get hold of a mp3 file with some lyrics in it, so we
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* can contribute the patch to Tika
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*
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* Uses Apache Tika
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*
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* @author Nick Burch
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* @author Roy Wetherall
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*/
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public class MP3MetadataExtracter extends TikaPoweredMetadataExtracter
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{
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private static final String KEY_SONG_TITLE = "songTitle";
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private static final String KEY_ALBUM_TITLE = "albumTitle";
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private static final String KEY_ARTIST = "artist";
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private static final String KEY_DESCRIPTION = "description";
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private static final String KEY_COMMENT = "comment";
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private static final String KEY_YEAR_RELEASED = "yearReleased";
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private static final String KEY_TRACK_NUMBER = "trackNumber";
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private static final String KEY_GENRE = "genre";
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private static final String KEY_COMPOSER = "composer";
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private static final String KEY_LYRICS = "lyrics";
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public static ArrayList<String> SUPPORTED_MIMETYPES = buildSupportedMimetypes(
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new String[] { MimetypeMap.MIMETYPE_MP3 },
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new Mp3Parser()
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);
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public MP3MetadataExtracter()
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{
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super(SUPPORTED_MIMETYPES);
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}
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@Override
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protected Parser getParser() {
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return new Mp3Parser();
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}
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@Override
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protected Map<String, Serializable> extractSpecific(Metadata metadata,
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Map<String, Serializable> properties) {
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putRawValue(KEY_ALBUM_TITLE, metadata.get(XMPDM.ALBUM), properties);
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putRawValue(KEY_SONG_TITLE, metadata.get(Metadata.TITLE), properties);
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putRawValue(KEY_ARTIST, metadata.get(XMPDM.ARTIST), properties);
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putRawValue(KEY_COMMENT, metadata.get(XMPDM.LOG_COMMENT), properties);
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putRawValue(KEY_TRACK_NUMBER, metadata.get(XMPDM.TRACK_NUMBER), properties);
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putRawValue(KEY_GENRE, metadata.get(XMPDM.GENRE), properties);
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putRawValue(KEY_YEAR_RELEASED, metadata.get(XMPDM.RELEASE_DATE), properties);
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putRawValue(KEY_COMPOSER, metadata.get(XMPDM.COMPOSER), properties);
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// TODO lyrics
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//putRawValue(KEY_LYRICS, getLyrics(), properties);
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putRawValue(KEY_DESCRIPTION, generateDescription(metadata), properties);
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return properties;
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}
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/**
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* Generate the description
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*
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* @param props the properties extracted from the file
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* @return the description
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*/
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private String generateDescription(Metadata metadata)
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{
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StringBuilder result = new StringBuilder();
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if (metadata.get(Metadata.TITLE) != null)
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{
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result.append(metadata.get(Metadata.TITLE));
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if (metadata.get(XMPDM.ALBUM) != null)
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{
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result
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.append(" - ")
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.append(metadata.get(XMPDM.ALBUM));
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}
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if (metadata.get(XMPDM.ARTIST) != null)
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{
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result
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.append(" (")
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.append(metadata.get(XMPDM.ARTIST))
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.append(")");
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}
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}
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return result.toString();
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}
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}
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