/**
* ===========================================
* LibFonts : a free Java font reading library
* ===========================================
*
* Project Info: http://reporting.pentaho.org/libfonts/
*
* (C) Copyright 2006-2008, by Pentaho Corporation and Contributors.
*
* 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;
* either version 2.1 of the License, or (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* LeastFrequentlyUsedCache.java
* ------------
*/
package org.pentaho.reporting.libraries.fonts.cache;
import org.pentaho.reporting.libraries.fonts.registry.FontKey;
import org.pentaho.reporting.libraries.fonts.registry.FontMetrics;
import org.pentaho.reporting.libraries.base.util.LFUMap;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class LeastFrequentlyUsedCache implements FontCache
{
private LFUMap map;
public LeastFrequentlyUsedCache(final int cacheSize)
{
// having at least 3 entries saves me a lot of coding and thus gives more performance ..
this.map = new LFUMap(cacheSize);
}
public synchronized FontMetrics getFontMetrics(final FontKey fontKey)
{
return (FontMetrics) map.get(fontKey);
}
public synchronized void putFontMetrics(final FontKey key, final FontMetrics metrics)
{
map.put(key, metrics);
}
public void commit()
{
// no op, as we have no deeper level.
}
}