daoprovider.java

一个基于java工厂模式的 的实现

/*
 * DAOProvider.java
 *
 * Created on 2007年4月18日, 下午4:11
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package com.ebuy.businessrule;

import com.ebuy.common.dao.IDAO;
import com.ebuy.common.dao.IDAOFactory;
import com.ebuy.common.NameProvider;

/**
 *
 * @author Administrator
 */
class DAOProvider
{
    private static IDAOFactory factory;
    static
    {
        try
        {
            factory=(IDAOFactory)(Class.forName("com.ebuy.dataaccess.DAOFactory").newInstance());
            
        }
        catch(Exception ex)
        {
            ex.printStackTrace();
        }
    }
    private DAOProvider()
    {
    }
    static IDAO getDAOByNameProvider(NameProvider name)
    {
        return factory.getDAOInstance(name);
    }
    
    
    
}