/**
* File: $HeadURL: https://hdt-java.googlecode.com/svn/trunk/hdt-java/src/org/rdfhdt/hdt/triples/TripleStringComparator.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: mario.arias@deri.org
* Javier D. Fernandez: jfergar@infor.uva.es
* Miguel A. Martinez-Prieto: migumar2@infor.uva.es
* Alejandro Andres: fuzzy.alej@gmail.com
*/
package org.rdfhdt.hdt.triples;
import java.util.Comparator;
import org.rdfhdt.hdt.util.string.CharSequenceComparator;
/**
* Comparator between triples, based on the TripleComponentOrder
*
*/
public class TripleStringComparator implements Comparator<TripleString> {
/**
* Basic constructor
*
* @param order
* The order to compare with
*/
public TripleStringComparator() {
super();
}
/*
* (non-Javadoc)
*
* @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
*/
@Override
public int compare(TripleString o1, TripleString o2) {
int result = CharSequenceComparator.getInstance().compare(o1.getSubject(), o2.getSubject());
if (result == 0) {
result = CharSequenceComparator.getInstance().compare(o1.getPredicate(), o2.getPredicate());
if (result == 0) {
// The third component is different?
return CharSequenceComparator.getInstance().compare(o1.getObject(), o2.getObject());
} else {
// the second component is different
return result;
}
} else {
// the first component is different
return result;
}
}
}