// Users.cpp: implementation of the CUsers class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "VirtualTeacher.h"
#include "Users.h"
#include "ADOConn.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////


CUsers::CUsers()
{
	UserName = "";
	Pwd = "";
}

CUsers::~CUsers()
{

}

CString CUsers::GetUserName()
{
	return UserName;
}

void CUsers::SetUserName(CString cUserName)
{
	UserName = cUserName;
}

CString CUsers::GetPwd()
{
	return Pwd;
}

void CUsers::SetPwd(CString cPwd)
{
	Pwd = cPwd;
}


//數(shù)據(jù)庫(kù)操作
int CUsers::HaveName(CString cUserName)
{	
	//連接數(shù)據(jù)庫(kù)
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//設(shè)置SELECT語句
	_bstr_t vSQL;
	vSQL = "SELECT * FROM Users WHERE UserName='" + cUserName + "'";
	
	//執(zhí)行SELECT語句
	_RecordsetPtr m_pRecordset;
	m_pRecordset = m_AdoConn.GetRecordSet(vSQL);
	if (m_pRecordset->adoEOF)
		return -1;
	else
		return 1;

	//斷開與數(shù)據(jù)庫(kù)的連接
	m_AdoConn.ExitConnect();
}

	
void CUsers::sql_insert()
{	
	//連接數(shù)據(jù)庫(kù)
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//設(shè)置INSERT語句
	_bstr_t vSQL;
	vSQL = "INSERT INTO Users VALUES('" + UserName + "','" + Pwd + "')";	
	//執(zhí)行INSERT語句
	m_AdoConn.ExecuteSQL(vSQL);	
	//斷開與數(shù)據(jù)庫(kù)的連接
	m_AdoConn.ExitConnect();
}

void CUsers::sql_updatePwd(CString cUserName)
{
	//連接數(shù)據(jù)庫(kù)
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//設(shè)置UPDATE語句
	_bstr_t vSQL;
	vSQL = "UPDATE Users SET Pwd='" + Pwd + "' WHERE UserName='" + cUserName + "'";
	//執(zhí)行UPDATE語句
	m_AdoConn.ExecuteSQL(vSQL);	
	//斷開與數(shù)據(jù)庫(kù)的連接
	m_AdoConn.ExitConnect();
}

void CUsers::sql_delete(CString cUserName)
{
	//連接數(shù)據(jù)庫(kù)
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//設(shè)置DELETE語句
	_bstr_t vSQL;
	vSQL = "DELETE FROM Users WHERE UserName='" + cUserName	+ "'";
	//執(zhí)行DELETE語句
	m_AdoConn.ExecuteSQL(vSQL);	
	//斷開與數(shù)據(jù)庫(kù)的連接
	m_AdoConn.ExitConnect();
}

//根據(jù)用戶名讀取所有字段值
void CUsers::GetData(CString cUserName)
{
	//連接數(shù)據(jù)庫(kù)
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//設(shè)置SELECT語句
	_bstr_t vSQL;
	vSQL = "SELECT * FROM Users WHERE UserName='" + cUserName + "'";
	//執(zhí)行SELETE語句
	_RecordsetPtr m_pRecordset;
	m_pRecordset = m_AdoConn.GetRecordSet(vSQL);

	//返回各列的值
	if (m_pRecordset->adoEOF)
		CUsers();
	else
	{
		UserName = cUserName;
		Pwd = (LPCTSTR)(_bstr_t)m_pRecordset->GetCollect("Pwd");
	}
	//斷開與數(shù)據(jù)庫(kù)的連接
	m_AdoConn.ExitConnect();
}