userdaofactory.java

来自「struts+hibernate BBS mysql数据库 功能基本齐全」· Java 代码 · 共 29 行

package com.elan.forum.factory;

import com.elan.forum.dao.UserDAO;
import com.elan.forum.impl.ElanUserDAOImpl;
/**
 * ForumUserDAO工厂
 * 
 * @author Elan
 *
 */
public class UserDAOFactory {
	private static UserDAO userDAO= null;
	/**
	 * 
	 * @return 由Elan实现的ForumUserDAO
	 */
	public static UserDAO getForumUserDAO() {
		if(1 == 1) {//Elan 的DAO 实现
			if(userDAO == null) {
				userDAO = ElanUserDAOImpl.newInstance();
			}
		} else {
			//扩展ForumUserDAO
		}
		return userDAO;
	}
	
}