/*******************************************************************************
* Breakout Cave Survey Visualizer
*
* Copyright (C) 2014 James Edwards
*
* jedwards8 at fastmail dot fm
*
* 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 2 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, write to the Free Software Foundation, Inc., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*******************************************************************************/
package org.andork.collect;
import java.util.Comparator;
/**
* Combines multiple comparators in order if priority. If items are equal
* according to the first, they'll be compared with the second, if they're equal
* according to the second, they'll be compared according to the third, and so
* on.
*
* @author andy.edwards
*
* @param <T>
*/
public class CompoundComparator<T> implements Comparator<T> {
Comparator<? super T>[] comparators;
public CompoundComparator(Comparator<? super T>... comparators) {
super();
this.comparators = comparators;
}
@Override
public int compare(T o1, T o2) {
for (Comparator<? super T> comparator : comparators) {
int result = comparator.compare(o1, o2);
if (result != 0) {
return result;
}
}
return 0;
}
}