jaitools.tilecache.TileAccessTimeComparator Maven / Gradle / Ivy
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Provides a single jar containing all JAI-tools modules which you can
use instead of including individual modules in your project. Note:
It does not include the Jiffle scripting language or Jiffle image
operator.
The newest version!
/*
* Copyright 2009 Michael Bedward
*
* This file is part of jai-tools.
*
* jai-tools 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 3 of the
* License, or (at your option) any later version.
*
* jai-tools 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 jai-tools. If not, see .
*
*/
package jaitools.tilecache;
import java.util.Comparator;
import javax.media.jai.CachedTile;
/**
* This is the default comparator for CachedTile objects used by
* {@linkplain DiskMemTileCache} to determine priority of tiles for
* storage in memory. It orders tiles from most recent to least
* recent access time.
*
* @author Michael Bedward
* @since 1.0
* @version $Id: TileAccessTimeComparator.java 1383 2011-02-10 11:22:29Z michael.bedward $
*/
public class TileAccessTimeComparator implements Comparator {
public int compare(CachedTile t1, CachedTile t2) {
long time1 = t1.getTileTimeStamp();
long time2 = t2.getTileTimeStamp();
// t1 > t2 if time1 < time2
return (time1 > time2 ? -1 : (time1 == time2 ? 0 : 1));
}
}
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