/*******************************************************************************
* GenPlay, Einstein Genome Analyzer
* Copyright (C) 2009, 2014 Albert Einstein College of Medicine
*
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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, see <http://www.gnu.org/licenses/>.
* Authors: Julien Lajugie <julien.lajugie@einstein.yu.edu>
* Nicolas Fourel <nicolas.fourel@einstein.yu.edu>
* Eric Bouhassira <eric.bouhassira@einstein.yu.edu>
*
* Website: <http://genplay.einstein.yu.edu>
******************************************************************************/
package edu.yu.einstein.genplay.core.comparator;
import java.util.Comparator;
import edu.yu.einstein.genplay.dataStructure.chromosomeWindow.ChromosomeWindow;
import edu.yu.einstein.genplay.dataStructure.genomeWindow.SimpleGenomeWindow;
/**
* Comparator between 2 {@link ChromosomeWindow}.
* Compare first the start position and if equals compare the stop positions
* @author Julien Lajugie
*/
public class ChromosomeWindowComparator implements Comparator<ChromosomeWindow> {
/**
* @return -1 if the start position of the first specified {@link SimpleGenomeWindow} is smaller than the start position of the second one
* or if the start positions are equal and the the stop position of the first specified {@link SimpleGenomeWindow} is smaller than the stop position of the second one <br>
* 0 if the start positions are equals and the stop positions are equal as well <br>
* 1 the start position of the first specified {@link SimpleGenomeWindow} is greater than the start position of the second one
* or if the start positions are equal and 1 the stop position of the first specified {@link SimpleGenomeWindow} is greater than the stop position of the second one
*/
@Override
public int compare(ChromosomeWindow chromosomeWindow1, ChromosomeWindow chromosomeWindow2) {
int startPosCompareRes = new ChromosomeWindowStartComparator().compare(chromosomeWindow1, chromosomeWindow2);
return (startPosCompareRes != 0) ? startPosCompareRes : new ChromosomeWindowStopComparator().compare(chromosomeWindow1, chromosomeWindow2);
}
}