67 lines
2 KiB
C++
67 lines
2 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Copyright (C) Microsoft Corporation, 1991 - 1998
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//
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// File: pershash.hxx
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//
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// Contents: Abstract class for persistent hash table
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//
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// History: 07-May-97 SitaramR Created from strings.hxx
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//
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//----------------------------------------------------------------------------
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#pragma once
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#include <prpstmgr.hxx>
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#include <dynstrm.hxx>
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#include "chash.hxx"
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//+-------------------------------------------------------------------------
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//
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// Class: CPersHash
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//
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// Purpose: Abstract class for persistent hash table
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//
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// History: 07-May-97 SitaramR Created
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// 23-Feb-98 KitmanH Added a protected member,
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// _fIsReadOnly
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//
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//--------------------------------------------------------------------------
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class CPersHash
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{
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public:
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CPersHash( CPropStoreManager & PropStoreMgr, BOOL fAggressiveGrowth );
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virtual ~CPersHash();
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virtual BOOL FastInit ( CiStorage * pStorage, ULONG version, BOOL fIsFileIdMap );
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virtual void LongInit ( ULONG version, BOOL fDirtyShutdown );
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virtual void Empty();
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virtual void LokFlush();
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void Shutdown ();
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protected:
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void GrowHashTable();
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void GrowToSize( unsigned cElements );
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//
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// Error recovery.
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//
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virtual BOOL ReInit( ULONG version );
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virtual void HashAll() = 0;
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CPropStoreManager & _PropStoreMgr;// Property store manager
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CDynStream * _pStreamHash; // Persistent hash stream
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CWidHashTable _hTable; // Map fileids to wids (using hash stream)
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BOOL _fIsOpen; // If TRUE, successfully opened
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BOOL _fAbort; // To abort long operations
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BOOL _fFullInit; // Set to TRUE if fully initialized.
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BOOL _fIsReadOnly; // TRUE if the catalog is for read only
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};
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