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Visual C++

ADOConnection.h：源码内容

							#ifndef _ADO_CONNECTION_H
#define _ADO_CONNECTION_H
/********************************************************
 *  Class Name	: CADOConnection.						*
 *	Purpose		: ADO's Database Connection Class.		*
 *  File  Name	: ADOConnection.h / ADOConnection.cpp	*
 *------------------------------------------------------*
 *	Author : Devia Lee.		Date: 2004-04-01			*
 ********************************************************/
#include ".ADOObject.h"
#include ".ADOException.h"
class CADOConnection : public	CADOObject
{
public:
	CADOConnection();
	virtual ~CADOConnection();
	//create the connection.
	bool	Create(LPCSTR lpszConnect,			
			ConnectModeEnum cmMode = ADOCG::adModeUnknown,
			CursorLocationEnum	clCursorLocation = ADOCG::adUseClient,
			int	 nConnectionTimeOut = 5);
	
	//destroy the connection.
	void	Destroy();
	//get the connection whether is opened.
	bool	IsActived();
	//get the connection string.
	LPCSTR	GetConnectionString(void);
	//Transaction processing.
	bool	BeginTransaction();
	bool	CommitTransaction();
	bool	RollBackTransaction();
	//Execute some sql statements.
	_RecordsetPtr	Execute(LPCSTR lpszSQLText, CommandTypeEnum ctCmdType = adCmdText);
	//open schema.
	_RecordsetPtr	OpenSchema(SchemaEnum Schema = adSchemaTables);
public:
	//Initialize or UnInitialize the ADO connection.
	static	bool	ADO_Initialize();
	static	void	ADO_UnInitialize();
	//get the connection smart ptr.
	_ConnectionPtr	getConnectionPtr();
private:
	//flag the connection is OK.
	bool			m_bConnected;
	//db connection smart pointer
	_ConnectionPtr 	m_pConnection;
	//db connection string text.
	string			m_sConnectionString;
};
#endif	//_ADO_CONNECTION_H

						