/*
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Jun 24, 2008
*/
package com.bigdata.relation.rule.eval;
import java.util.Comparator;
import com.bigdata.striterator.IKeyOrder;
/**
* Wraps the {@link Comparator} obtained from a {@link IKeyOrder} such that it
* will ordered {@link ISolution}s by the elements reported by
* {@link ISolution#get()}.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public class SolutionComparator<E> implements Comparator<ISolution<E>> {
private final Comparator<E> comparator;
public SolutionComparator(IKeyOrder<E> keyOrder) {
this.comparator = keyOrder.getComparator();
}
public int compare(ISolution<E> arg0, ISolution<E> arg1) {
return comparator.compare(arg0.get(), arg1.get());
}
}