lrucache.java

一个非常好的FRAMWRK!是一个外国组织做的!不!

/**
 * Copyright 2003-2005 the original author or authors.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

  * 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.jdon.controller.cache;

import com.jdon.util.PropsUtil;
import com.jdon.util.UtilCache;

 /**
  * the LRU Cache implemention.
  * default is OFBiz's UtilCache, we can replace it with better cache product.
  *
  *  cache parameters must be defined, and the configure file name must
  * be defined in container.xml too.
  * <p>@author <a href="mailto:[e-mail]">banq</a></p>
  */
public class LRUCache implements Cache {
  
  private UtilCache cache;

  /**
   * configFileName must be defined in container.xml
   * 
   * @param configFileName
   */
  public LRUCache(String configFileName) {
    PropsUtil propsUtil = new PropsUtil(configFileName);
    cache = new UtilCache(propsUtil);    
  }

  public Object get(Object key) {
    return cache.get(key);
  }

  public void put(Object key, Object value) {
    cache.put(key, value);
  }

  public void remove(Object key) {
    cache.remove(key);
  }

  public long size() {
    return cache.size();
  }

  public void clear() {
    cache.clear();
  }

  public boolean contain(Object key) {
    return cache.containsKey(key);
  }

}