org.rdfhdt.hdt.triples.TriplesFactory Maven / Gradle / Ivy
/*
* File: $HeadURL: https://hdt-java.googlecode.com/svn/trunk/hdt-java/src/org/rdfhdt/hdt/triples/TriplesFactory.java $
* Revision: $Rev: 191 $
* Last modified: $Date: 2013-03-03 11:41:43 +0000 (dom, 03 mar 2013) $
* Last modified by: $Author: mario.arias $
*
* 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Contacting the authors:
* Mario Arias: [email protected]
* Javier D. Fernandez: [email protected]
* Miguel A. Martinez-Prieto: [email protected]
* Alejandro Andres: [email protected]
*/
package org.rdfhdt.hdt.triples;
import org.rdfhdt.hdt.hdt.HDTVocabulary;
import org.rdfhdt.hdt.options.ControlInfo;
import org.rdfhdt.hdt.options.HDTOptions;
import org.rdfhdt.hdt.options.HDTSpecification;
import org.rdfhdt.hdt.triples.impl.BitmapTriples;
import org.rdfhdt.hdt.triples.impl.TriplesList;
/**
* Factory that creates Triples objects
*
*/
public class TriplesFactory {
public static final String TEMP_TRIPLES_IMPL_LIST = "list";
private TriplesFactory() {}
/**
* Creates a new TempTriples (writable triples structure)
*
* @return TempTriples
*/
static public TempTriples createTempTriples(HDTOptions spec) {
// String triplesImpl = spec.get("tempTriples.impl");
// Implementations available in the Core
// if (triplesImpl==null || triplesImpl.equals("") || TEMP_TRIPLES_IMPL_LIST.equals(triplesImpl)) {
return new TriplesList(spec);
// }
}
/**
* Creates a new Triples based on an HDTOptions
*
* @param specification
* The HDTOptions to read
* @return Triples
*/
static public TriplesPrivate createTriples(HDTOptions spec) {
String type = spec.get("triples.format");
if(type==null) {
return new BitmapTriples(spec);
} else if(HDTVocabulary.TRIPLES_TYPE_TRIPLESLIST.equals(type)) {
return new TriplesList(spec);
} else if(HDTVocabulary.TRIPLES_TYPE_BITMAP.equals(type)) {
return new BitmapTriples(spec);
} else {
return new BitmapTriples(spec);
}
}
/**
* Creates a new Triples based on a ControlInformation
*
* @param specification
* The HDTOptions to read
* @return Triples
*/
public static TriplesPrivate createTriples(ControlInfo ci) {
String format = ci.getFormat();
if(HDTVocabulary.TRIPLES_TYPE_TRIPLESLIST.equals(format)) {
return new TriplesList(new HDTSpecification());
} else if(HDTVocabulary.TRIPLES_TYPE_BITMAP.equals(format)) {
return new BitmapTriples();
} else {
throw new IllegalArgumentException("No implementation for Triples type: "+format);
}
}
}