com.cyclopsgroup.waterview.core.LRUCacheManager.java Source code

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Here is the source code for com.cyclopsgroup.waterview.core.LRUCacheManager.java

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/* ==========================================================================
 * Copyright 2002-2005 Cyclops Group Community
 * 
 * Licensed under the Open Software License, Version 2.1 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://opensource.org/licenses/osl-2.1.php
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 * =========================================================================
 */
package com.cyclopsgroup.waterview.core;

import java.util.Map;

import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.commons.collections.map.LRUMap;

import com.cyclopsgroup.waterview.spi.CacheManager;

/**
 * LRU implemented cache manager
 * 
 * @author <a href="mailto:jiaqi.guo@gmail.com">Jiaqi Guo </a>
 */
public class LRUCacheManager extends AbstractMapCacheManager implements CacheManager, Configurable {
    private LRUMap content = new LRUMap(1000);

    /**
     * Override or implement method of parent class or interface
     *
     * @see org.apache.avalon.framework.configuration.Configurable#configure(org.apache.avalon.framework.configuration.Configuration)
     */
    public void configure(Configuration conf) throws ConfigurationException {
        int size = conf.getChild("size").getValueAsInteger(-1);
        if (size > 1) {
            content = new LRUMap(size);
        }
    }

    /**
     * Override or implement method of parent class or interface
     *
     * @see com.cyclopsgroup.waterview.core.AbstractMapCacheManager#getContent()
     */
    protected Map getContent() {
        return content;
    }
}