departments.cpp

This a integrated human resource manage system ,developed with vc++ and sql2000 Server

// Departments.cpp: implementation of the CDepartments class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "HrSys.h"
#include "Departments.h"
#include "ADOConn.h"

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

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

CDepartments::CDepartments()
{
	DepId = 0;
	DepName = "";
	Describes = "";
	UpperId = 0;
}

CDepartments::~CDepartments()
{

}

//读取和设置成员变量

//数据库操作
int CDepartments::HaveName(CString cDepName)
{	
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//设置SELECT语句
	_bstr_t vSQL;
	vSQL = "SELECT * FROM Departments WHERE DepName='" + cDepName + "'";
	
	//执行SELECT语句
	_RecordsetPtr m_pRecordset;
	m_pRecordset = m_AdoConn.GetRecordSet(vSQL);
	if (m_pRecordset->adoEOF)
		return -1;
	else
		return 1;
	//断开与数据库的连接
	m_AdoConn.ExitConnect();
}

int CDepartments::HaveSon(CString cDepId)
{	
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//设置SELECT语句
	_bstr_t vSQL;
	vSQL = "SELECT * FROM Departments WHERE UpperId=" + cDepId;
	
	//执行SELECT语句
	_RecordsetPtr m_pRecordset;
	m_pRecordset = m_AdoConn.GetRecordSet(vSQL);
	if (m_pRecordset->adoEOF)
		return -1;
	else
		return 1;
	//断开与数据库的连接
	m_AdoConn.ExitConnect();
}

int CDepartments::HaveEmp(CString cDepId)
{	
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//设置SELECT语句
	_bstr_t vSQL;
	vSQL = "SELECT * FROM Employees WHERE DepId=" + cDepId;
	
	//执行SELECT语句
	_RecordsetPtr m_pRecordset;
	m_pRecordset = m_AdoConn.GetRecordSet(vSQL);
	if (m_pRecordset->adoEOF)
		return -1;
	else
		return 1;
	//断开与数据库的连接
	m_AdoConn.ExitConnect();
}

void CDepartments::Load_dep()
{	
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//设置SELECT语句
	_bstr_t vSQL;
	vSQL = "SELECT * FROM Departments ORDER BY UpperId";
	
	//执行SELETE语句
	_RecordsetPtr m_pRecordset;
	m_pRecordset = m_AdoConn.GetRecordSet(vSQL);
	//初始化数组
	a_DepName.RemoveAll();
	a_DepId.RemoveAll();
	a_UpperId.RemoveAll();
	//执行SELECT语句
	while (m_pRecordset->adoEOF == 0)
	{
		a_DepId.Add((LPCTSTR)(_bstr_t)m_pRecordset->GetCollect("DepId"));
		a_DepName.Add((LPCTSTR)(_bstr_t)m_pRecordset->GetCollect("DepName"));
		a_UpperId.Add((LPCTSTR)(_bstr_t)m_pRecordset->GetCollect("UpperId"));
		
		m_pRecordset->MoveNext();
	}
	//断开与数据库的连接
	m_AdoConn.ExitConnect();
}

long CDepartments::sql_insert()
{	
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//设置INSERT语句
	CString strUpperId;
	strUpperId.Format("%d", UpperId);

	_bstr_t vSQL;
	vSQL = "INSERT INTO Departments (DepName, Describes, UpperId) VALUES('" 
		+ DepName + "','" + Describes + "'," + strUpperId + ")";	
	//执行INSERT语句
	m_AdoConn.ExecuteSQL(vSQL);	

	//读取最大编号
	long lDepId;
	vSQL = "SELECT MAX(DepId) AS MaxId FROM Departments";	
	//执行SELETE语句
	_RecordsetPtr m_pRecordset;
	m_pRecordset = m_AdoConn.GetRecordSet(vSQL);
	//返回各列的值
	if (m_pRecordset->adoEOF)
		lDepId = 0;
	else
		lDepId = atol((LPCTSTR)(_bstr_t)m_pRecordset->GetCollect("MaxId"));
	//断开与数据库的连接
	m_AdoConn.ExitConnect();

	return lDepId;
}

void CDepartments::sql_update(CString cDepId)
{
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//设置UPDATE语句

	_bstr_t vSQL;
	vSQL = "UPDATE Departments SET DepName='" + DepName 
		+ "', Describes='" + Describes +"' WHERE DepId=" + cDepId;
	//执行UPDATE语句
	m_AdoConn.ExecuteSQL(vSQL);	
	//断开与数据库的连接
	m_AdoConn.ExitConnect();
}

void CDepartments::sql_delete(CString cDepId)
{
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//设置DELETE语句
	_bstr_t vSQL;
	vSQL = "DELETE FROM Departments WHERE DepId=" + cDepId;
	//执行DELETE语句
	m_AdoConn.ExecuteSQL(vSQL);	
	//断开与数据库的连接
	m_AdoConn.ExitConnect();
}

//根据部门编号读取所有字段值
void CDepartments::GetData(CString cDepId)
{
	//连接数据库
	ADOConn m_AdoConn;
	m_AdoConn.OnInitADOConn();
	//设置SELECT语句
	_bstr_t vSQL;
	vSQL = "SELECT * FROM Departments WHERE DepId=" + cDepId;
	//执行SELETE语句
	_RecordsetPtr m_pRecordset;
	m_pRecordset = m_AdoConn.GetRecordSet(vSQL);

	//返回各列的值
	if (m_pRecordset->adoEOF)
		CDepartments();
	else
	{
		DepId = atoi(cDepId);
		DepName = (LPCTSTR)(_bstr_t)m_pRecordset->GetCollect("DepName");
		Describes = (LPCTSTR)(_bstr_t)m_pRecordset->GetCollect("Describes");
		UpperId = atoi((LPCTSTR)(_bstr_t)m_pRecordset->GetCollect("UpperId"));
	}
	//断开与数据库的连接
	m_AdoConn.ExitConnect();
}