package com.interceptor;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import com.sessionfactory.SessionFactory;

/**
 * 事务拦截器
 * @author Administrator
 *
 */
public class SessionTrascationInvocationHandler implements InvocationHandler {

	/*操作实现类*/
	private Object obj = null;
	
	public static  int IS_SUCCESS =0 ;  //默认不成功 
	
	
	public SessionTrascationInvocationHandler(Object realObject)
	{
		obj = realObject;
	}
	
	public Object invoke(Object proxy, Method method, Object[] args)
			throws Throwable {
		Object result = null;
		try{
				System.out.println("prepare....");
				result =  method.invoke(obj, args);
				System.out.println("do trascation....");
				if(IS_SUCCESS==1)
				{
					commit();
				}
		}catch(Exception e){
			rollback();
			e.printStackTrace();
		}
		return result;
	}
	
	public void commit()
	{
		SessionFactory.session.commit();
	}
	
	public void rollback()
	{
		SessionFactory.session.rollback();
	}

}