src/com/bar/db/Email.java

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/**
 * @(#)Email.java
 *
 *
 * @author
 * @version 1.00 2009/11/26
 */


package com.bar.db;

import java.sql.*;

public class Email extends ExecuteDB
{
	//定义类成员变量
	private long emailid;
	private String subject;
	private String content;
	private String sender;
	private String receiver;
	private int tag;
	private String strSql;

    //构造函数，对成员变量进行初始化赋值
	public Email()
	{
		super();
		this.emailid=0;
		this.subject="";
		this.content="";
		this.sender="";
		this.receiver="";
		this.tag=0;
		this.strSql="";
	}

	//在email数据表中添加一条新记录
	public boolean add()
	{
		this.strSql="insert into email";
		this.strSql=this.strSql + " (subject,content,sender,receiver,tag) ";
		this.strSql=this.strSql + "values('" + this.subject + "','" + this.content + "','" + this.sender + "','" + this.receiver + "','" + this.tag + "')";

		boolean isAdd = super.exeSql(this.strSql);
		return isAdd;
	}

	//删除属于某个集合中的邮件
	public boolean delete(String semailid)
	{
		this.strSql="delete from email";
		this.strSql=this.strSql + "  where emailid in ("+semailid+")";

		boolean isDelete = super.exeSql(this.strSql);
		return isDelete;
	}

  	//获取邮件详细信息，将这些信息赋值给相应的类变量
	public boolean  init()