#pragma once

#include "stdafx.h"


namespace OTSSQLITE
{
	class __declspec(dllexport) CDBQueryBase
	{
	public:
		virtual int GetColCount() = 0;

		virtual CString GetColName(const int a_nColIndex) = 0;
		virtual int GetColType(const int a_nColIndex) = 0;

		virtual CString GetColValue(const int a_nColIndex) = 0;
		virtual int GetColIntValue(const int a_nColIndex, const int a_nNullValue = 0) = 0;
		virtual double GetColFloatValue(const int a_nColIndex, const double a_dNullValue = 0.0) = 0;
		virtual CString GetColStringValue(const int a_nColIndex, LPCTSTR a_sNullValue = _T("")) = 0;
		virtual const unsigned char* GetColBlobValue(const int a_nColIndex, int& a_nLen) = 0;

		virtual BOOL IsColNull(const int a_nColIndex) = 0;

		virtual BOOL IsValid() = 0;

		virtual BOOL IsEOF() = 0;
		virtual BOOL NextRow() = 0;
		virtual void Close() = 0;
	};

	typedef  std::shared_ptr<CDBQueryBase> __declspec(dllexport) CDBQueryBasePtr;
}