dbsrvimp.h

Visual C++实践与提高-刘刀桂, 孟繁晶编著

#ifndef _DBSERVERIMP_INCLUDE
#define _DBSERVERIMP_INCLUDE

#include "..\interface\dbsrv.h"

typedef long HRESULT;

class CDB : public IDB, public IDBAccess, public IDBManage, public IDBInfo {
  // Interfaces
  public:
	  	// Interface for data access
		HRESULT _stdcall Read(short nTable, short nRow, LPWSTR lpszData);
		HRESULT _stdcall Write(short nTable, short nRow, LPCWSTR lpszData);

		// Interface for database management
		HRESULT _stdcall Create(short &nTable, LPCWSTR lpszName);
		HRESULT _stdcall Delete(short nTable);

		// Interfase para obtenber informacion sobre la base de datos
		HRESULT _stdcall GetNumTables(short &nNumTables);
		HRESULT _stdcall GetTableName(short nTable, LPWSTR lpszName);
		HRESULT _stdcall GetNumRows(short nTable, short &nRows);

		HRESULT _stdcall QueryInterface(REFIID riid, void** ppObject);
		ULONG   _stdcall AddRef();
		ULONG   _stdcall Release();

  // Implementation
  private:
		CPtrArray m_arrTables; 	 // Array of pointers to CStringArray (the "database")
		CStringArray m_arrNames; // Array of table names
		ULONG m_dwRefCount;
	public:
		CDB();
		~CDB();
};

extern ULONG g_dwRefCount;

class CDBSrvFactory : public IClassFactory {
	// Interface
	public:
		HRESULT _stdcall QueryInterface(REFIID riid, void** ppObject);
		ULONG   _stdcall AddRef();
		ULONG   _stdcall Release();

		HRESULT _stdcall CreateInstance(IUnknown *pUnkOuter, REFIID riid, void** ppObject);
		HRESULT	_stdcall LockServer(BOOL fLock);
	// Implementation
	private:
		ULONG m_dwRefCount;
	public:
		CDBSrvFactory();
};

#endif