158 lines
4.1 KiB
C++
158 lines
4.1 KiB
C++
//-----------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1995.
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//
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// File: CRSEmbed.hxx
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//
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// Contents: IUnknown embedder for temptable.
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//
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// Functions:
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//
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// Notes:
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//
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//
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// History: 08/30/96 | RenatoB | Created
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//----------------------------------------------------------------------------
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#ifndef _CREMBED_H_
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#define _CREMBED_H_
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//-----------------------------------------------------------------------------
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// @class CRowsetInfo | ADSI embedding of Rowset,
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// to give our IrowsetInfo interface
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//
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//
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//-----------------------------------------------------------------------------
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class CRowProvider;
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class CRowsetInfo;
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class CCommandObject;
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class CSessionObject;
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class CRowsetInfo : INHERIT_TRACKING,
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public IRowsetInfo
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{
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friend HRESULT CreateTempTable(
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IRowProvider*,
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IUnknown*, IUnknown* ,
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CSessionObject* ,
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CCommandObject* ,
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ULONG,DBPROPSET[],
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ULONG,
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HACCESSOR[],
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REFIID,
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IUnknown**
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);
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public:
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DECLARE_STD_REFCOUNTING
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DECLARE_IRowsetInfo_METHODS
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STDMETHODIMP QueryInterface(REFIID, LPVOID *);
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CRowsetInfo(
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IUnknown *pUnkOuter,
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IUnknown *pParentObject,
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CSessionObject *pCSession,
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CCommandObject *pCCommand
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);
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~CRowsetInfo();
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STDMETHODIMP FInit(
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IUnknown *pRowset //@parm IN| TmpTable interface
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);
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private:
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STDMETHODIMP InitProperties(void);
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// Frees the memory of an array of PropertySets
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STDMETHODIMP_(void)
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FreePropertySets(
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ULONG cPropertySets, // Count of property sets
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DBPROPSET *rgPropertySets // Array of property sets to be freed
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);
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STDMETHODIMP_(LONG )SearchGuid(
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GUID riid // GUID of the DBPROPSET
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);
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STDMETHODIMP_(LONG )SearchPropid(
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ULONG ibPropertySet,
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DWORD dwPropertyID
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);
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IUnknown *_pUnkOuter;
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IUnknown *_pRowset;
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IUnknown *_pParentObject;
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CSessionObject *_pCSession;
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CCommandObject *_pCCommand;
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CRITICAL_SECTION _csRowsetInfo;
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IMalloc* _pMalloc;
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ULONG _cPropertySets;
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DBPROPSET *_pPropertySets;
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// Status word.
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enum Status {
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STAT_UNINIT = 0x0000, //GetProperties Not initialized
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STAT_DIDINIT = 0x0001, //Get Properties initialized successfully
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STAT_INITERROR = 0x0002, //Get Properties Failed initialization
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};
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DWORD _dwStatus;
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};
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class CAutoBlock {
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friend class CRowsetInfo;
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friend class CRowsetInfo;
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friend class CImpIAccessor;
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private:
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CAutoBlock( CRITICAL_SECTION *pCrit );
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~CAutoBlock();
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void UnBlock();
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CRITICAL_SECTION *_pCrit;
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};
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inline CAutoBlock::CAutoBlock(
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CRITICAL_SECTION *pCrit ) //@parm IN | The critical section.
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{
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// It is OK to pass a NULL ptr to this routine. It is a NOOP.
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// Note that passing NULL to EnterCriticalSection blows up.
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if (pCrit)
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::EnterCriticalSection( pCrit );
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_pCrit = pCrit;
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};
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inline CAutoBlock::~CAutoBlock()
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{
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if (_pCrit)
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::LeaveCriticalSection( _pCrit );
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}
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//-----------------------------------------------------------------------------
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// @mfunc
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// Ends blocking explicitly. Thereafter, the destructor does nothing.
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//-----------------------------------------------------------------------------------
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inline void CAutoBlock::UnBlock()
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{
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// Clear the critical-section member,
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// so that the destructor doesn't do anything.
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if (_pCrit)
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::LeaveCriticalSection( _pCrit );
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_pCrit = NULL;
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}
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#endif //_CRSEMBED_H_
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