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/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2006 - 2009 Pentaho Corporation and Contributors. All rights reserved.
*/
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.
}
}
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