proxy.java

实现统一的人员日志管理系统管理后台

package com.tb.log.model.proxy;

import java.sql.Connection;
import java.sql.SQLException;

import com.tb.log.factory.OracleDAOFactory;
import com.tb.log.system.SystemException;


public abstract class Proxy {
	
	
	public static void commit() throws SystemException{
		
		try {
			OracleDAOFactory.getConnection().commit();
		} catch (SQLException e) {
			String err = "SQLException in Proxy:commit()---"+e;
			System.out.println(err);
			}
		}

	
	/**
	 * get方法不涉及关联数据对象
	 * @param id
	 * @return
	 * @throws SystemException
	 */
	public abstract Object get (int id)throws SystemException;
	
	/**
	 * load方法返回与本实体关联的所有数据对象，涉及级联
	 * @param id
	 * @return
	 * @throws SystemException
	 */
	public abstract Object load(int id)throws SystemException;

	/**
	 * add方法涉及级联添加
	 * @param obj
	 * @return 
	 * @throws SystemException
	 */
	public abstract boolean add(Object obj)throws SystemException;

	/**
	 * modify方法涉及级联更新
	 * @param obj
	 * @throws SystemException
	 */
	public abstract boolean modify(Object obj)throws SystemException;

	/**
	 * remove方法涉及级联删除
	 * @param obj
	 * @throws SystemException
	 */
	public abstract boolean remove(Object obj)throws SystemException;
	
	
}