#include"ADOConn.h"
#include<iostream>


ADOConn::ADOConn(void)
{
}


ADOConn::~ADOConn(void)
{
}


void ADOConn::OnInitADOConn(_bstr_t add)
{
	//初始化ole/com库环境
	::CoInitialize(NULL);
	try
	{
		//创建connection对象
		m_pConnection.CreateInstance("ADODB.Connection");
		add1 = add;
		_bstr_t FileName = add;//".\\AllData.mdb"
		_bstr_t strConnect = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + FileName;
		m_pConnection->Open(strConnect, "", "", adModeUnknown);
		//m_pConnection.CreateInstance("ADODB.Connection");
		////设置连接字符串
		//m_pConnection->Open("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=lolic.accdb;Persist Security Info=False ", "", "", adModeUnknown);

		//设置连接字符串
		
	}
	//捕捉异常
	catch (_com_error e)
	{
		//显示错误信息
		cout << e.Description() << endl;
	}
}


void ADOConn::ExitConnect(void)
{
	//关闭记录集和连接
	if (m_pRecordset != NULL)
		m_pRecordset->Close();
	m_pConnection->Close();
	//释放环境
	::CoUninitialize();
}

void ADOConn::GetRecordSet(_bstr_t bstrSql, int c)
{
	try
	{
		if (!Query((_bstr_t)bstrSql))
		{
			//执行失败，返回错误
			cout << "错误！！！\n" << endl;
			return ;
		}
		//连接数据库，如果connection是空，则重新连接数据库
		if (m_pConnection == NULL)
			OnInitADOConn(add1);
		//创建记录对象
		m_pRecordset.CreateInstance(__uuidof(Recordset));
		//取得表中的记录
		m_pRecordset->Open(bstrSql, m_pConnection.GetInterfacePtr(), adOpenDynamic,
			adLockOptimistic, adCmdText);
	}
	catch (_com_error e)
	{
		cout << e.Description() << endl;
	}
	search = m_pRecordset;//返回记录集
}


bool ADOConn::Query(_bstr_t bstrSQL)
{
	try
	{
		//链接数据库，如果connection对象空，则重新链接数据库
		if (m_pConnection == NULL)
			OnInitADOConn(add1);

		//创建记录集对象
		m_pRecordset.CreateInstance(_uuidof(Recordset));


		//取得标准记录
		m_pRecordset->Open(bstrSQL, m_pConnection.GetInterfacePtr(), adOpenDynamic, adLockOptimistic, adCmdText);

		return true;
	}
	catch (_com_error e)
	{
		return false;

	}
}

string ADOConn::search_RES(_variant_t resid)
{
	_bstr_t strRecord;
	string c;
	while (!search->adoEOF)
	{
		strRecord = (LPCTSTR)(_bstr_t)m_pRecordset->GetCollect(resid);
		 c = (string)strRecord;
	}
	return c;
}



_RecordsetPtr ADOConn::GetRecordSet(_bstr_t bstrSql)
{
	try
	{
		//连接数据库，如果connection是空，则重新连接数据库
		if (m_pConnection == NULL)
			OnInitADOConn(add1);
		//创建记录对象
		m_pRecordset.CreateInstance(__uuidof(Recordset));
		//取得表中的记录
		m_pRecordset->Open(bstrSql, m_pConnection.GetInterfacePtr(), adOpenDynamic,
			adLockOptimistic, adCmdText);
	}
	catch (_com_error e)
	{
		cout << e.Description() << endl;
	}
	//返回记录集
	return m_pRecordset;
}


bool ADOConn::ExecuteSQL(_bstr_t bstrSql)
{
	_variant_t recordsAffected;
	try
	{
		//数据库是否已连接
		if (m_pConnection == NULL)
			OnInitADOConn(add1);
		m_pConnection->Execute(bstrSql, NULL, adCmdText);
		return true;
	}
	catch (_com_error e)
	{
		cout << e.Description() << endl;
		return false;
	}
	return false;
}