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///////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 1998, Microsoft Corp. All rights reserved.
//
// FILE
//
// bind.h
//
// SYNOPSIS
//
// This file declares various macros and helper functions for binding
// an OLE-DB accessor to the members of a class.
//
// MODIFICATION HISTORY
//
// 02/20/1998 Original version.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef _BIND_H_
#define _BIND_H_
#include <oledb.h>
namespace Bind{ // Returns the buffer size required for a given DBBINDING array.
DBLENGTH getRowSize(DBCOUNTITEM cBindings, const DBBINDING rgBindings[]) throw ();
// Creates an accessor on the pUnk object.
HACCESSOR createAccessor(IUnknown* pUnk, DBACCESSORFLAGS dwAccessorFlags, DBCOUNTITEM cBindings, const DBBINDING rgBindings[], DBLENGTH cbRowSize);
// Releases an accessor on the pUnk object.
void releaseAccessor(IUnknown* pUnk, HACCESSOR hAccessor) throw ();}
//////////
// Marks the beginning of DBBINDING map.
//////////
#define BEGIN_BIND_MAP(class, name, flags) \
HACCESSOR create ## name(IUnknown* p) const \{ typedef class _theClass; \ const DBACCESSORFLAGS dbFlags = flags; \ static const DBBINDING binding[] = {
//////////
// Terminates a DBBINDING map.
//////////
#define END_BIND_MAP() \
}; const DBCOUNTITEM count = sizeof(binding)/sizeof(DBBINDING); \ static const DBLENGTH rowsize = Bind::getRowSize(count, binding); \ return Bind::createAccessor(p, dbFlags, count, binding, rowsize); \}
//////////
// Entry in a DBBINDING map. Entries must be separated by commas.
//////////
#define BIND_COLUMN(member, ordinal, type) \
{ ordinal, offsetof(_theClass, member), 0, 0, NULL, NULL, NULL, \ DBPART_VALUE, DBMEMOWNER_CLIENTOWNED, \ (dbFlags == DBACCESSOR_ROWDATA ? DBPARAMIO_NOTPARAM : DBPARAMIO_INPUT), \ sizeof(_theClass :: member), 0, type, 0, 0 }
#endif // _BIND_H_
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