/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2007-2008, Open Source Geospatial Foundation (OSGeo)
*
* 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.geotools.caching;
import org.geotools.caching.spatialindex.NodeIdentifier;
/**
* Eviction policy interface. Used to determine which items are removed
* from the cache when the maximum cache size is reached.
*
*
*
*
* @source $URL$
*/
public interface EvictionPolicy {
/**
* Removes the node from next node in the policy from the cache.
* @return false if nothing to evict; otherwise returns true
*/
public boolean evict();
/**
* Called when a node is accessed.
* @param node node accessed
*/
public void access(NodeIdentifier node);
// /**
// *
// * @return false if nothing to evict; otherwise returns true
// */
// public boolean canEvict();
}