pagecachekeyfactory.java

Java/J2EE框架Jdon-Framework系统的Sample

/**
 * Copyright 2005 Jdon.com
 * 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.model.query;

import com.jdon.controller.cache.*;

/**
 * 用于EJB容器中的DAO直接调用。
 * <p>Copyright: Jdon.com Copyright (c) 2003</p>
 * <p></p>
 * @author banq
 * @version 1.0
 */
public class PageCacheKeyFactory extends CacheKeyFactory {
  /**
   * 可缓存的类型：批量查询语句 PageIterator
   */
  public final static String CACHE_TYPE_PAGEITERATOR = "PageIterator";

  public PageCacheKeyFactory(CacheFactory cacheFactory) {
     //重新设置cacheFactory 实例，本类由EJB容器调用，不同的cacheFactory
     super(cacheFactory);
   }


  public CacheKey createCacheKeyImp(Object dataKey, String typeName) {
    return new CacheKey(CACHE_TYPE_PAGEITERATOR, dataKey, typeName);
  }



}