533 lines
16 KiB
C++
533 lines
16 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1991 - 1998.
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//
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// File: FRESH.CXX
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//
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// Contents: Fresh list
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//
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// Classes: CFresh
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//
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// History: 16-May-91 BartoszM Created.
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//
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//----------------------------------------------------------------------------
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#include <pch.cxx>
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#pragma hdrstop
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#include <enumstr.hxx>
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#include "fresh.hxx"
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#include "fretest.hxx"
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#include "indxact.hxx"
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#include "merge.hxx"
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#include "wordlist.hxx"
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class CEnumWorkid;
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//+---------------------------------------------------------------------------
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//
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// Member: CFresh::CFresh, public
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//
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// Synopsis: Constructor.
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//
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// History: 16-May-91 BartoszM Created.
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//
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//----------------------------------------------------------------------------
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CFresh::CFresh ( PStorage& storage, CTransaction& xact, CPartList & partList )
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: _storage( storage ),
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_persFresh( storage, partList ),
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_master( 0 ),
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_partList( partList )
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{
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ULONG count = max( _persFresh.GetPersRecCount(), 100 );
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XPtr<CFreshTest> xMaster( new CFreshTest ( count ) );
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SFreshTable freshTable( xMaster.GetReference() );
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_persFresh.LoadFreshTest( *freshTable );
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_master = xMaster.Acquire();
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CFresh::~CFresh, public
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//
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// Synopsis: Destructor.
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//
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// History: 16-May-91 BartoszM Created.
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//
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//----------------------------------------------------------------------------
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CFresh::~CFresh ()
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{
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delete _master;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CFresh::LokInit, public
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//
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// Synopsis: Empties and re-initializes the fresh test
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//
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// History: 15-Nov-94 DwightKr Created.
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//
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//----------------------------------------------------------------------------
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void CFresh::LokInit()
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{
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_persFresh.LokEmpty();
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unsigned count = 100;
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CFreshTest* newFreshTest = new CFreshTest ( count );
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LokCommitMaster( newFreshTest );
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CFresh::LokGetFreshTest, public
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//
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// Synopsis: Creates CFreshTest object
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//
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// History: 16-May-91 BartoszM Created.
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//
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// Notes: ResMan LOCKED
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// FreshTest has to be released
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//
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//----------------------------------------------------------------------------
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CFreshTest* CFresh::LokGetFreshTest()
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{
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ciDebugOut (( DEB_ITRACE, ">> get fresh test\n"));
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_master->Reference();
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return _master;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CFresh::LokReleaseFreshTest, public
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//
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// Synopsis: Dereferences CFreshTest object
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//
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// History: 16-May-91 BartoszM Created.
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//
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// Notes: ResMan LOCKED
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//
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//----------------------------------------------------------------------------
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void CFresh::LokReleaseFreshTest( CFreshTest* test )
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{
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ciDebugOut (( DEB_ITRACE, "<< release fresh test\n" ));
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if ( test != 0 && test->Dereference() == 0 && test != _master )
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{
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delete test;
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}
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CFresh::LokCommitMaster, public
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//
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// Synopsis: Adds a new master fresh test
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//
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// History: 16-May-91 BartoszM Created.
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//
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// Notes: ResMan LOCKED
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//
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//----------------------------------------------------------------------------
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void CFresh::LokCommitMaster ( CFreshTest* newMaster )
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{
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ciDebugOut (( DEB_ITRACE, "Commit new master fresh test\n" ));
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Win4Assert ( newMaster != 0 );
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Win4Assert ( _master != 0 );
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CFreshTest* old = _master;
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_master = newMaster;
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ciDebugOut(( DEB_ITRACE, "New master (0x%x) has %u deletes\n", _master, _master->DeleteCount() ));
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if ( !old->InUse() )
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{
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delete old;
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}
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CFresh::LokAddIndex, public
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//
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// Synopsis: Adds new mapping iid <-> documents after filtering
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//
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// Arguments: [xact] -- transaction
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// [iid] -- index id
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// [iidDeleted] -- index id for deleted objects
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// [docList] -- list of wids
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//
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// History: 16-May-91 BartoszM Created.
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//
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// Notes: ResMan LOCKED
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//
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//----------------------------------------------------------------------------
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void CFresh::LokAddIndex ( CIndexTrans& xact,
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INDEXID iid, INDEXID iidDeleted,
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CDocList& docList, CWordList const & wordList )
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{
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ciDebugOut (( DEB_ITRACE, "Fresh: Adding documents, iid %lx\n", iid ));
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CFreshTest* newMaster = new CFreshTest ( *_master );
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xact.LogFresh ( newMaster );
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unsigned cDocuments = docList.Count();
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for ( unsigned i = 0; i < cDocuments; i++ )
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{
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STATUS status = docList.Status(i);
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if ( status == SUCCESS )
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{
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WORKID wid = docList.Wid(i);
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ciDebugOut (( DEB_FRESH, "Fresh wid %ld, iid %lx\n", wid, iid ));
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#if CIDBG==1
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Win4Assert( widInvalid != wid &&
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wordList.IsWorkIdPresent( wid ) );
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#endif // CIDBG==1
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newMaster->AddReplace ( wid, iid );
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}
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else if ( status == DELETED || status == WL_NULL )
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{
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WORKID wid = docList.Wid(i);
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ciDebugOut (( DEB_FRESH, "Fresh wid %ld deleted \n", wid ));
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newMaster->AddReplaceDelete ( wid, iidDeleted );
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}
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else
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{
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ciDebugOut (( DEB_FRESH,
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"Fresh wid %ld, not changed. Status 0x%X\n",
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docList.Wid(i), status ));
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#if CIDBG==1
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Win4Assert( !wordList.IsWorkIdPresent( docList.Wid(i)) );
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#endif // CIDBG==1
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}
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}
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newMaster->ModificationsComplete();
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CFresh::LokDeleteDocuments, public
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//
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// Synopsis: Mark documents as deleted
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//
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// Arguments: [xact] -- transaction
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// [docList] -- list of wids
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// [iidDeleted] -- index id for deleted objects
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//
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// History: 16-May-91 BartoszM Created.
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// 12-Jun-97 KyleP Track unlogged deletions
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//
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// Notes: ResMan LOCKED
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//
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//----------------------------------------------------------------------------
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void CFresh::LokDeleteDocuments( CIndexTrans& xact,
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CDocList& docList,
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INDEXID iidDeleted )
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{
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ciDebugOut (( DEB_ITRACE, "Fresh: Deleting documents\n" ));
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CFreshTest* newMaster = new CFreshTest ( *_master );
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xact.LogFresh ( newMaster );
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unsigned cDocuments = docList.Count();
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for ( unsigned i = 0; i < cDocuments; i++ )
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{
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if ( docList.Status(i) == DELETED)
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{
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WORKID wid = docList.Wid(i);
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ciDebugOut (( DEB_FRESH, "Fresh wid %ld deleted \n", wid ));
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newMaster->AddReplaceDelete ( wid, iidDeleted );
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}
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}
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newMaster->ModificationsComplete();
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CFresh::LokUpdate, public
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//
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// Synopsis: Replaces old entries with the more recent entries after merge
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//
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// Arguments: [merge] -- Merge object
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// [xact] -- Merge transaction
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// [newFreshLog] -- New fresh log
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// [newIid] -- New index id
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// [cInd] -- Count of index id's to be replaced
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// [aIidOld] -- Array of index id's to be replaced
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// [xFreshTestAtMerge] -- If a new fresh test that was used at
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// merge time is created, store in here
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//
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// History: 16-May-91 BartoszM Created.
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// 01-Dec-93 DwightKr Write changes to pers. fresh log
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// 04-Oct-94 SrikantS Support for creating a new fresh
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// log after merge.
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//
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// Notes: ResMan LOCKED
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//
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//----------------------------------------------------------------------------
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WORKID CFresh::LokUpdate ( CMerge& merge,
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CMergeTrans& xact,
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CPersFresh & newFreshLog,
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INDEXID newIid,
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int cInd,
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INDEXID aIidOld[],
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XPtr<CFreshTest> & xFreshTestAtMerge )
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{
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ciDebugOut (( DEB_ITRACE, "Fresh list: updating %d entries\n", cInd ));
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CIdxSubstitution subst (FALSE, newIid, cInd, aIidOld);
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CFreshTest * newMaster = new CFreshTest( *_master, subst );
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xact.LogFresh( newMaster );
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WORKID widNewFreshLog;
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//
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// The new memory fresh test is created by applying the transformtion on
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// the master fresh test. We should apply the transformation for
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// persistent log on the freshtest used by the merge. If a fresh test is
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// created then we pass ownership to xFreshTestAtMerge, so that
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// LokDeleteWidsInPersistentIndex can use the newly created fresh test.
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//
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// optimization to avoid creating a new fresh test
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if ( _master == merge.GetFresh() )
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{
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widNewFreshLog = LokBuildNewFreshLog( newMaster, newFreshLog, subst);
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newMaster->DecrementDeleteCount( _master->DeleteCount() );
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}
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else
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{
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xFreshTestAtMerge.Set( new CFreshTest( *(merge.GetFresh()), subst ) );
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widNewFreshLog = LokBuildNewFreshLog( xFreshTestAtMerge.GetPointer(),
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newFreshLog,
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subst );
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newMaster->DecrementDeleteCount( xFreshTestAtMerge->DeleteCount() );
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}
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newMaster->ModificationsComplete();
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xact.LogNewFreshLog( newMaster, widNewFreshLog );
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return widNewFreshLog;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CFresh::LokRemoveIndexes, public
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//
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// Synopsis: Removes indexes from table after master merge
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//
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// Arguments: [xact] -- merge transaction
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// [cInd] -- count of inexes to be removed
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// [aIidOld] -- array of index ids of obsolete indexes
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// [iidOldDeleted] -- old index id for deleted objects
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//
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// History: 16-May-91 BartoszM Created.
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//
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// Notes: ResMan LOCKED
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//
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//----------------------------------------------------------------------------
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WORKID CFresh::LokRemoveIndexes( CMergeTrans& xact,
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CPersFresh & newFreshLog,
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unsigned cInd,
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INDEXID aIidOld[],
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INDEXID iidOldDeleted )
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{
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ciDebugOut (( DEB_ITRACE, "FreshList: Removing indexes\n" ));
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CIdxSubstitution subst (TRUE, iidOldDeleted, cInd, aIidOld);
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XPtr<CFreshTest> xNewMaster( new CFreshTest( *_master, subst ) );
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WORKID widNewFreshLog = LokBuildNewFreshLog( xNewMaster.GetPointer(),
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newFreshLog,
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subst );
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// LogNewFreshLog can't fail, so the acquire is safe to do
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// before the call.
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xNewMaster->ModificationsComplete();
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xact.LogNewFreshLog( xNewMaster.Acquire(), widNewFreshLog );
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return(widNewFreshLog);
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}
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//+---------------------------------------------------------------------------
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//
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// Function: LokBuildNewFreshLog
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//
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// Synopsis: Builds a new persistent fresh log by combining the existing
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// fresh log and the new fresh test.
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//
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// Arguments: [newFreTest] -- Input - the new fresh test.
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// [newFreshLog] -- Input/Output - the new fresh log object.
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// [subst] -- Index substitution object
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//
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// Returns: ObjectId of the new persistent fresh log created.
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//
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// History: 03-Oct-94 srikants Created
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// 11-Jun-97 KyleP Track unlogged deletions
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//
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//----------------------------------------------------------------------------
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WORKID CFresh::LokBuildNewFreshLog( CFreshTest * newFreTest,
|
||
|
|
CPersFresh & newFreshLog,
|
||
|
|
CIdxSubstitution& subst )
|
||
|
|
{
|
||
|
|
SFreshTable freshTable( *newFreTest );
|
||
|
|
CFreshTableIter iter( *freshTable );
|
||
|
|
|
||
|
|
//
|
||
|
|
// Create a new persistent fresh log.
|
||
|
|
//
|
||
|
|
WORKID widNewFreshLog = _storage.GetNewObjectIdForFreshLog();
|
||
|
|
_storage.InitRcovObj( widNewFreshLog, FALSE );
|
||
|
|
|
||
|
|
PRcovStorageObj *pPersFreshLog = _storage.QueryFreshLog( widNewFreshLog );
|
||
|
|
SRcovStorageObj PersFreshLog( pPersFreshLog );
|
||
|
|
|
||
|
|
//
|
||
|
|
// Inside kernel, we are guaranteed that a new object has no data in
|
||
|
|
// it. In user space, we may be using an object that was not deleted
|
||
|
|
// before due to a failure.
|
||
|
|
//
|
||
|
|
PersFreshLog->InitHeader(_storage.GetStorageVersion());
|
||
|
|
|
||
|
|
newFreshLog.LokCompactLog( PersFreshLog, iter, subst);
|
||
|
|
|
||
|
|
return(widNewFreshLog);
|
||
|
|
}
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CFresh::LokMakeFreshLogBackup
|
||
|
|
//
|
||
|
|
// Synopsis: Makes a backup of the current persistent freshlog to the
|
||
|
|
// storage provided.
|
||
|
|
//
|
||
|
|
// Arguments: [storage] - Destination storage.
|
||
|
|
// [tracker] - Progress tracker and abort indication.
|
||
|
|
//
|
||
|
|
// History: 3-18-97 srikants Created
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
void CFresh::LokMakeFreshLogBackup( PStorage & storage,
|
||
|
|
PSaveProgressTracker & tracker,
|
||
|
|
XInterface<ICiEnumWorkids> & xEnumWorkids )
|
||
|
|
{
|
||
|
|
|
||
|
|
//
|
||
|
|
// Create a fresh log with the same name using the storage object
|
||
|
|
// provided.
|
||
|
|
//
|
||
|
|
|
||
|
|
WORKID widFreshLog = _storage.GetSpecialItObjectId( itFreshLog );
|
||
|
|
|
||
|
|
ULONG cRec = 0;
|
||
|
|
//
|
||
|
|
// Scope for physical copy of the object.
|
||
|
|
//
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// Open the source fresh log
|
||
|
|
//
|
||
|
|
PRcovStorageObj *pSrcFreshLog = _storage.QueryFreshLog( widFreshLog );
|
||
|
|
SRcovStorageObj xSrcFreshLog( pSrcFreshLog );
|
||
|
|
|
||
|
|
//
|
||
|
|
// Create the destination fresh log
|
||
|
|
//
|
||
|
|
PRcovStorageObj *pDstFreshLog = storage.QueryFreshLog( widFreshLog );
|
||
|
|
SRcovStorageObj xDstFreshLog( pDstFreshLog );
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// Copy the contents of the source to the destination.
|
||
|
|
//
|
||
|
|
CCopyRcovObject copyData( *pDstFreshLog, *pSrcFreshLog );
|
||
|
|
NTSTATUS status = copyData.DoIt();
|
||
|
|
if ( STATUS_SUCCESS != status )
|
||
|
|
THROW( CException( status ) );
|
||
|
|
|
||
|
|
CRcovStorageHdr & hdr = pSrcFreshLog->GetHeader();
|
||
|
|
cRec = hdr.GetCount( hdr.GetPrimary() );
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Get the list of WORKIDs in the persistent freshlog.
|
||
|
|
//
|
||
|
|
CFreshTest * pFreshTest = new CFreshTest ( max(100,cRec) );
|
||
|
|
XPtr<CFreshTest> xFreTest( pFreshTest );
|
||
|
|
|
||
|
|
SFreshTable freshTable( *pFreshTest );
|
||
|
|
|
||
|
|
//
|
||
|
|
// The source and destination persistent freshlogs are identical.
|
||
|
|
//
|
||
|
|
_persFresh.LoadFreshTest( *freshTable );
|
||
|
|
|
||
|
|
//
|
||
|
|
// Copy the workids from freshhash entries to the workid enumerator.
|
||
|
|
//
|
||
|
|
CEnumWorkid * pEnumWorkids = new CEnumWorkid( freshTable->Count() );
|
||
|
|
xEnumWorkids.Set( pEnumWorkids );
|
||
|
|
|
||
|
|
for ( CFreshTableIter iter( *freshTable ); !iter.AtEnd(); iter.Advance() )
|
||
|
|
{
|
||
|
|
pEnumWorkids->Append( iter->WorkId() );
|
||
|
|
}
|
||
|
|
|
||
|
|
Win4Assert( cRec == freshTable->Count() );
|
||
|
|
ciDebugOut(( DEB_ITRACE, "%d Workids Changed \n", freshTable->Count() ));
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CFresh::LokEmpty, public
|
||
|
|
//
|
||
|
|
// Synopsis: Empties/deletes the fresh hash and the fresh log.
|
||
|
|
//
|
||
|
|
// History: 16-Aug-94 DwightKr Created
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
void CFresh::LokEmpty()
|
||
|
|
{
|
||
|
|
delete _master; // Delete the fresh test
|
||
|
|
_master = 0;
|
||
|
|
}
|
||
|
|
|