/*
* This file is part of LibrePlan
*
* Copyright (C) 2009-2010 Fundación para o Fomento da Calidade Industrial e
* Desenvolvemento Tecnolóxico de Galicia
* Copyright (C) 2010-2011 Igalia, S.L.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.libreplan.business.resources.entities;
import java.util.Comparator;
import org.joda.time.LocalDate;
import org.libreplan.business.planner.limiting.entities.LimitingResourceQueueElement;
/**
*
* @author Diego Pino Garcia <dpino@igalia.com>
*
*/
public class LimitingResourceQueueElementComparator implements
Comparator<LimitingResourceQueueElement> {
@Override
public int compare(LimitingResourceQueueElement arg0,
LimitingResourceQueueElement arg1) {
int compareDates = compare(arg0.getStartDate(), arg1.getStartDate());
return (compareDates != 0) ? compareDates : compare(
arg0.getStartHour(), arg1.getStartHour());
}
private int compare(LocalDate arg0, LocalDate arg1) {
if (arg0 == null) {
return -1;
}
if (arg1 == null) {
return 1;
}
return arg0.compareTo(arg1);
}
private int compare(int arg0, int arg1) {
final int deltaHour = arg0 - arg1;
return (deltaHour != 0) ? deltaHour / Math.abs(deltaHour) : 0;
}
}