com.flexive.shared.SimpleCacheStats.java Source code

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Here is the source code for com.flexive.shared.SimpleCacheStats.java

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/***************************************************************
 *  This file is part of the [fleXive](R) framework.
 *
 *  Copyright (c) 1999-2014
 *  UCS - unique computing solutions gmbh (http://www.ucs.at)
 *  All rights reserved
 *
 *  The [fleXive](R) project is free software; you can redistribute
 *  it and/or modify it under the terms of the GNU Lesser General Public
 *  License version 2.1 or higher as published by the Free Software Foundation.
 *
 *  The GNU Lesser General Public License can be found at
 *  http://www.gnu.org/licenses/lgpl.html.
 *  A copy is found in the textfile LGPL.txt and important notices to the
 *  license from the author are found in LICENSE.txt distributed with
 *  these libraries.
 *
 *  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 General Public License for more details.
 *
 *  For further information about UCS - unique computing solutions gmbh,
 *  please see the company website: http://www.ucs.at
 *
 *  For further information about [fleXive](R), please see the
 *  project website: http://www.flexive.org
 *
 *
 *  This copyright notice MUST APPEAR in all copies of the file!
 ***************************************************************/
package com.flexive.shared;

import org.apache.commons.lang.StringUtils;

/**
 * Simple cache stats beans.
 * 
 * @author Daniel Lichtenberger (daniel.lichtenberger@flexive.com), UCS - unique computing solutions gmbh (http://www.ucs.at)
 */
public class SimpleCacheStats {
    private final String description;
    private int hits = 0;
    private int misses = 0;

    public SimpleCacheStats(String description) {
        this.description = description;
    }

    public synchronized void addHit() {
        hits++;
    }

    public synchronized void addMiss() {
        misses++;
    }

    public synchronized int getHits() {
        return hits;
    }

    public synchronized int getMisses() {
        return misses;
    }

    public String getDescription() {
        return description;
    }

    /** {@inheritDoc} */
    @Override
    public String toString() {
        return StringUtils.rightPad(description + ":", 16) + hits + " hits, " + misses + " misses (hit rate = "
                + ((double) hits / (hits + misses)) + ")";

    }

}