/*
* -----------------------------------------------------------------------
* Copyright © 2013-2015 Meno Hochschild, <http://www.menodata.de/>
* -----------------------------------------------------------------------
* This file (RuleComparator.java) is part of project Time4J.
*
* Time4J 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.
*
* Time4J 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 Time4J. If not, see <http://www.gnu.org/licenses/>.
* -----------------------------------------------------------------------
*/
package net.time4j.tz.model;
import java.util.Comparator;
/**
* <p>Compares daylight saving rules in ascending order. </p>
*
* @author Meno Hochschild
* @since 2.2
*/
enum RuleComparator
implements Comparator<DaylightSavingRule> {
//~ Statische Felder/Initialisierungen --------------------------------
INSTANCE;
//~ Methoden ----------------------------------------------------------
@Override
public int compare(DaylightSavingRule o1, DaylightSavingRule o2) {
int result = o1.getDate(2000).compareTo(o2.getDate(2000)); // leap year
if (result == 0) {
result = o1.getTimeOfDay().compareTo(o2.getTimeOfDay());
}
return result;
}
}