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yacy_search_server/source/net/yacy/kelondro/data/meta/MetadataVocabulary.java

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1.7 KiB

/**
* MetadataVocabulary
* Copyright 2012 by Michael Peter Christen
* First released 12.4.2012 at http://yacy.net
*
* This file is part of YaCy Content Integration
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program in the file lgpl21.txt
* If not, see <http://www.gnu.org/licenses/>.
*/
package net.yacy.kelondro.data.meta;
import java.util.Set;
import net.yacy.cora.lod.Literal;
import net.yacy.cora.lod.Vocabulary;
public enum MetadataVocabulary implements Vocabulary {
moddate, url;
public final static String IDENTIFIER = "http://yacy.net/metadata";
public final static String PREFIX = "ym";
private final String predicate;
private MetadataVocabulary() {
this.predicate = PREFIX + ":" + this.name().toLowerCase();
}
@Override
public String getIdentifier() {
return IDENTIFIER;
}
@Override
public String getPrefix() {
return PREFIX;
}
@Override
public String getPredicate() {
return this.predicate;
}
@Override
public Set<Literal> getLiterals() {
return null;
}
}