modelmanager.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.model;


import com.jdon.controller.model.Model;

/**
 * 本类是产生框架使用的各种Model，面向客户端调用
 * 如果需要调用Model相关功能，调用本ModelManager
 *
 * 为提高性能，可在此嵌入对象池。
 *
 * @author banq
 */
public interface ModelManager  {


  /**
   * 从Modelhandler池中借用一个实例
   * 借用后必须归还
   */
  public ModelHandler borrowtHandlerObject(String formName);
  /**
   * 归还从Modelhandler池中借用一个实例
   */
  public void returnHandlerObject(ModelHandler modelHandler);

  /**
   * 获得一个新的Model实例
   */
  public Model getModelObject(String formName);

  /**
   * 将Model实例加入缓存
   */
  public void addCache(ModelKey modelKey, Model model);

  /**
   * 将Model实例加入缓存
   */
  public void addCache(Object key, String className, Model model);

  /**
   * 获取加入缓存的Model实例
   */

  public Model getCache(ModelKey modelKey);

  /**
   * 获取加入缓存的Model实例
   */
  public Model getCache(Object key, String className);

  /**
   * 根据主键值，删除缓存中的Model实例
   */
  public void removeCache(Object dataKey) throws Exception;

  
  public void clearCache();


}