/*
* org.openmicroscopy.shoola.util.roi.model.util.LongComparator
*
*------------------------------------------------------------------------------
* Copyright (C) 2006-2007 University of Dundee. All rights reserved.
*
*
* 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.openmicroscopy.shoola.util.roi.model.util;
//Java imports
import java.io.Serializable;
import java.util.Comparator;
//Third-party libraries
//Application-internal dependencies
/**
* Compares <code>Long</code>.
*
* @author Jean-Marie Burel
* <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
* @author Donald MacDonald
* <a href="mailto:donald@lifesci.dundee.ac.uk">donald@lifesci.dundee.ac.uk</a>
* @version 3.0
* <small>
* (<b>Internal version:</b> $Revision: $Date: $)
* </small>
* @since OME3.0
*/
public class LongComparator
implements Comparator, Serializable
{
/**
* Compares the passed objects.
* @see Comparator#compare(Object, Object)
*/
public int compare(Object o1, Object o2)
{
if (!(o1 instanceof Long || o2 instanceof Long))
return 0;
Long a = (Long) o1;
Long b = (Long) o2;
if (a < b) return -1;
else if (a > b) return 1;
return 0;
}
}