/*
* Geotoolkit - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2010, Geomatys
*
* This library 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;
* version 2.1 of the License.
*
* This library 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.
*/
package org.geotoolkit.util.collection;
import java.util.LinkedHashMap;
import java.util.Map.Entry;
/**
* A Cache map that is limited to the given number of elements.
* This map is not synchronized and do not preserve older elements with
* weak or soft reference.
* It can be seen a fixed max size map where only the most recents elements
* are preserved.
*
* @author Johann Sorel (Geomatys)
*/
public class UnSynchronizedCache<K extends Object,V extends Object> extends LinkedHashMap<K, V>{
private final int maxElements;
public UnSynchronizedCache(final int maxElement) {
super();
this.maxElements = maxElement;
}
@Override
protected boolean removeEldestEntry(final Entry<K, V> entry) {
return size() > maxElements;
}
}