lyfz_repos/经典版源码/AdoImpl/ADOBaseImpl.cpp

#include "StdAfx.h"
#include "ADOBaseImpl.h "

CADOBaseImpl::CADOBaseImpl(void)
{
	m_bOpen = FALSE;
	m_pADODatabase = NULL;
	memset(m_szConnectString,0,1024);
	InitializeCriticalSection(&m_csAdo);
}

CADOBaseImpl::~CADOBaseImpl(void)
{
	DeleteCriticalSection(&m_csAdo);
}


BOOL CADOBaseImpl::OpenCatalog(IN STDatabaseInfo& dbInfo)
{
	if ( m_pADODatabase ) return TRUE;

	BOOL bRet = FALSE;
	if ( _ttoi(dbInfo.szDatabaseTCPPort) == 0 )
	{
		_stprintf_s(m_szConnectString, _T("Provider=sqloledb;Data Source=%s;Initial Catalog=%s;User Id=%s;Password=%s; "),
			dbInfo.szDataSource,			// IP華硊麼督昢靡備;
			dbInfo.szDatabaseName, 
			dbInfo.szDatabaseAccount,
			dbInfo.szDatabasePassword);
	}
	else
	{
		_stprintf_s(m_szConnectString, _T("Provider=sqloledb;Data Source=%s,%s;Initial Catalog=%s;User Id=%s;Password=%s; "),
			dbInfo.szDataSource,			// IP華硊麼督昢靡備;
			dbInfo.szDatabaseTCPPort, 
			dbInfo.szDatabaseName, 
			dbInfo.szDatabaseAccount,
			dbInfo.szDatabasePassword);
	}

	m_pADODatabase = new CADODatabase();
	if ( m_pADODatabase )
	{
		m_pADODatabase->SetConnectionString(m_szConnectString);
		if ( m_pADODatabase->Open() )
		{
			bRet = TRUE;
		}
		else
		{
			if ( m_pADODatabase->IsOpen() )
			{
				m_pADODatabase->Close();
			}

			delete m_pADODatabase;
			m_pADODatabase = NULL;
		}
	}

	return bRet;
}

void CADOBaseImpl::CloseCatalog()
{
	if( NULL != m_pADODatabase )
	{
		if( m_pADODatabase->IsOpen() )
		{
			m_pADODatabase->Close();
		}

		if( m_pADODatabase )
			delete m_pADODatabase;
		m_pADODatabase = NULL;
	}
}

INT CADOBaseImpl::Execute(IN LPCTSTR lpExcSQL)
{
	INT nRetCode = 0;
	if ( NULL == m_pADODatabase || NULL == lpExcSQL)
		return -1;

	try
	{
		EnterCriticalSection(&m_csAdo);
		if ( m_pADODatabase->IsOpen() )
		{
			nRetCode = m_pADODatabase->Execute(lpExcSQL);
			LeaveCriticalSection(&m_csAdo);
		}
		else
		{
			LeaveCriticalSection(&m_csAdo);
			return -1;
		}
	}
	catch (_com_error* e)
	{
	}

	return nRetCode;
}

INT CADOBaseImpl::GetTblRecordCount(IN LPCTSTR lpTblName, IN LPCTSTR lpFilters)
{
	if ( lpTblName == NULL)
		return -1;

	TCHAR szSQL[1024] = _T("");
	if(lpFilters == NULL || _tcscmp(lpFilters,_T("")) == 0)
		_stprintf_s(szSQL,_T("select count(*) as cot from %s"),lpTblName);
	else
		_stprintf_s(szSQL,_T("select count(*) as cot from %s where %s"),lpTblName,lpFilters);

	DWORD nRecordCount = 0;			
	_variant_t vtFieldValue;

	BOOL bResult = FALSE;
	EnterCriticalSection(&m_csAdo);
	bResult = GetADODateBaseStatus();
	if( FALSE == bResult )
	{
		LeaveCriticalSection(&m_csAdo);
		return -1;
	}

	CADORecordset* pRSet = new CADORecordset(m_pADODatabase);
	if( NULL == pRSet )
	{
		LeaveCriticalSection(&m_csAdo);
		return -1;
	}


	bResult = OpenADORecordSet(pRSet, szSQL);
	if( false == bResult )
	{
		LeaveCriticalSection(&m_csAdo);
		DeleteADORecordSet(pRSet);
		return -1;
	}


	if( !pRSet->IsFieldNull(_T("cot")) )
	{
		pRSet->GetFieldValue(_T("cot"), nRecordCount);
	}
	else
	{
		nRecordCount = -1;
	}

	DeleteADORecordSet(pRSet);
	LeaveCriticalSection(&m_csAdo);

	return nRecordCount;
}

BOOL CADOBaseImpl::IsOpen()
{
	return m_pADODatabase == NULL;
}

BOOL CADOBaseImpl::GetADODateBaseStatus()
{
	if( NULL == m_pADODatabase || !m_pADODatabase->IsOpen()) 
		return FALSE;

	return TRUE;
}

BOOL CADOBaseImpl::OpenADORecordSet(IN CADORecordset *pRSet, IN LPCTSTR lpSQL)
{
	if( NULL == pRSet || NULL == lpSQL)
		return FALSE;

	INT nRetCode;
	BOOL bResult = TRUE;
	try
	{
		nRetCode = pRSet->Open(lpSQL, CADORecordset::openQuery);

		if (nRetCode == 0)
		{
			DeleteADORecordSet(pRSet);
			bResult = FALSE;
		}
	}
	catch (_com_error &e)
	{
		DeleteADORecordSet(pRSet);
		bResult = FALSE;
	}

	return bResult;
}

void CADOBaseImpl::CloseADORecordSet(IN CADORecordset* pRSet)
{
	if( NULL != pRSet )
	{
		if( pRSet->IsOpen() )
		{
			pRSet->Close();
		}
	}
}

void CADOBaseImpl::DeleteADORecordSet(IN CADORecordset* pRSet)
{
	CloseADORecordSet(pRSet);

	if( pRSet )
	{
		delete pRSet;
		pRSet = NULL;
	}
}