factory.java

一个用jsp技术实现的新闻发布系统

package net.ijsp.news.news;

/**
*  Title  用户相关信息
*  @author: ccjsmile
*  Company: http://www.ijsp.net
*  Copyright: Copyright (c) 2003
*  @version 1.0 beta
*/
import net.ijsp.news.search.SearchManager;
import net.ijsp.news.search.Query;

public abstract class Factory {

	private static Factory factory = null;
	private final static String className = "net.ijsp.news.news.mysql.MysqlFactory";
	
	/**
	* 获得Factory的实例
	*/
	public static Factory getInstance() {
		if(factory==null) {
			try {
				Class c = Class.forName(className);
				factory = (Factory)c.newInstance();
			} catch (Exception ex) {
	            ex.printStackTrace();
				
            }
		}
		return factory;
	}

	/**
	* 获取 User 实例
	*/
	public abstract User getUser() ;


	/**
	* 获取 UserFactory 实例
	*/
	public abstract UserFactory getUserFactory() ;


	/**
	* 获取 Board 实例
	*/
	public abstract Board getBoard() ;


	/**
	* 获取 BoardFactory 实例
	*/
	public abstract BoardFactory getBoardFactory() ;

	/**
	* 获取 News 实例
	*/
	public abstract News getNews();

	/**
	* 获取 NewsFactory 实例
	*/
	public abstract NewsFactory getNewsFactory();

	/**
	* 设置检索
	*/
	public abstract SearchManager getSearchManager();

	/**
	* 检索
	*/
	public abstract Query getQuery();
}