Click here to Skip to main content
15,888,113 members
Articles / Desktop Programming / MFC

CODBCAccess: a CDatabase and CRecordset Wrapper

Rate me:
Please Sign up or sign in to vote.
5.00/5 (10 votes)
12 Mar 200312 min read 210K   4.3K   55  
A class to wrap the use of CDatabase and CRecordset into one object to communicate with databases
//By: George Polouse

#if !defined(AFX_RECORDSETEX_H__43D82455_75A6_11D2_BD7C_204C4F4F5020__INCLUDED_)
#define AFX_RECORDSETEX_H__43D82455_75A6_11D2_BD7C_204C4F4F5020__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// RecordsetEx.h : header file
//

/////////////////////////////////////////////////////////////////////////////
// CRecordsetEx recordset

class CRecordsetEx : public CRecordset
{
public:
	CRecordsetEx(CDatabase* pDatabase = NULL);
	DECLARE_DYNAMIC(CRecordsetEx)

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CRecordsetEx)
	public:
	virtual BOOL Open(UINT nOpenType = dynaset, LPCTSTR lpszSql = NULL, DWORD dwOptions = none);
	//}}AFX_VIRTUAL

	void AllocAndCacheFieldInfo();
	BOOL ExecDirect(const CString& sSQL, UINT nOpenType = dynaset);
	void GetFieldValue(short nIndex, CString& strValue);
	
// Implementation
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif
private:
	static int PASCAL GetTextLen(short nSQLType, UDWORD nPrecision);
	static void PASCAL GetLongCharDataAndCleanup(CDatabase* pdb, HSTMT hstmt,
		short nFieldIndex, long nActualSize, LPVOID* ppvData, int nLen,
		CString& strValue, short nSQLType);
};

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_RECORDSETEX_H__43D82455_75A6_11D2_BD7C_204C4F4F5020__INCLUDED_)

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


Written By
United States United States
I work with C++, C#, Perl, PHP, HTML (with a lot of CSS), and a little bit of ASP.NET. I have been programming for 7 years.

I also enjoy translating Latin, and especially reading authors whose primary language was Latin, including Virgil (or Vergil for the Latinate spelling), Julius Caesar, Catullus, Cicero, and some others (like Martial). I enjoy classical music, most especially Mozart and Bach.

Comments and Discussions