54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
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//-----------------------------------------------------------------------------------
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// Microsoft OLE DB Provider for ODBC data
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// (C) Copyright 1994 - 1996 By Microsoft Corporation.
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//
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// @doc
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//
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// @module ROWPROV.H | Definition of the Row Provider interface used by the generic
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// flavor of the TempTable.
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//
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//
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// @rev 1 | 04-03-96 | WlodekN | Created
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// @rev 2 | 07-24-96 | EricJ | Added PropID
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//
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//-----------------------------------------------------------------------------------
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#ifndef __ROWPROV_INCL__
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#define __ROWPROV_INCL__
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//---------------------------------- C L A S S E S ----------------------------------
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// Abstract class for objects providing row data to the generic TempTable.
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class IRowProvider : public IUnknown
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{
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public:
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virtual STDMETHODIMP GetColumn
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(
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ULONG icol,
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DBSTATUS *pwStatus,
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ULONG *pdwLength,
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BYTE *pbData
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) = 0;
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virtual STDMETHODIMP NextRow
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(
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void
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) = 0;
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};
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EXTERN_C const IID IID_IRowProvider;
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EXTERN_C const GUID DBPROPSET_TEMPTABLE;
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// TempTable Property IDs.
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enum tagetmptablepropid
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{
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DBPROP_INSTANTPOPULATION=2, // TRUE = Prepopulate. FALSE = Lazy population.
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DBPROP_DBCOLBYREF, // TRUE = Clear BYREF flags from IColumnsInfo, source owns memory.
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DBPROP_DONTALLOCBYREFCOLS, // TRUE = TempTable only allocates ptr for BYREF columns.
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};
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#endif // __ROWPROV_INCL__
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