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994 lines
29 KiB
994 lines
29 KiB
//+---------------------------------------------------------------------------
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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: PINDEX.CXX
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//
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// Contents: Persistent Index
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//
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// Classes: CPersIndex, CMergeSourceCursor
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//
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// History: 03-Apr-91 BartoszM Created stub.
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// 20-Apr-94 DwightKr Moved CMergeSourceCursor here
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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 <pdir.hxx>
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#include <pstore.hxx>
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#include <pidxtbl.hxx>
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#include <rwex.hxx>
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#include "pindex.hxx"
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#include "pcomp.hxx"
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#include "mcursor.hxx"
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#include "fresh.hxx"
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#include "physidx.hxx"
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#include "pcomp.hxx"
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#include "fretest.hxx"
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#include "indsnap.hxx"
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#include "keylist.hxx"
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#include "partn.hxx"
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unsigned const FOUR_MEGABYTES = 0x400000;
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//+---------------------------------------------------------------------------
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//
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// Member: CPersIndex::Size, public
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//
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// Synopsis: Returns size in pages
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//
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// History: 22-May-92 BartoszM Created.
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//
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//----------------------------------------------------------------------------
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unsigned CPersIndex::Size() const
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{
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return _xPhysIndex->PageSize();
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}
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void CPersIndex::FillRecord ( CIndexRecord& record )
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{
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record._objectId = ObjectId();
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record._iid = GetId();
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record._type = IsMaster()? itMaster: itShadow;
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record._maxWorkId = MaxWorkId();
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CPersIndex::CPersIndex, public
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//
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// Synopsis: Create an empty index
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//
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// Arguments: [id] -- index id
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// [storage] -- physical storage
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//
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// History: 3-Apr-91 BartoszM Created.
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//
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//----------------------------------------------------------------------------
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CPersIndex::CPersIndex(
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PStorage & storage,
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WORKID objectId,
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INDEXID iid,
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unsigned c4KPages,
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CDiskIndex::EDiskIndexType idxType ) :
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CDiskIndex( iid, idxType ),
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_sigPersIndex( eSigPersIndex ),
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_storage( storage ),
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_obj( storage.QueryObject( objectId ) ),
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_fAbortMerge( FALSE )
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{
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XPtr<PMmStream> sStream( storage.QueryNewIndexStream( _obj.GetObj(),
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CDiskIndex::eMaster == idxType ) );;
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_xPhysIndex.Set( new CPhysIndex( storage,
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_obj.GetObj(),
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objectId,
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c4KPages,
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sStream ) );
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_xPhysIndex->SetPageGrowth( FOUR_MEGABYTES / CI_PAGE_SIZE );
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Win4Assert( 0 == sStream.GetPointer() );
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_xDir.Set( _storage.QueryNewDirectory( _obj.GetObj() ) );
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CPersIndex::CPersIndex, public
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//
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// Synopsis: Restore an index from storage
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//
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// Arguments: [id] -- index id
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// [storage] -- physical storage
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// [widMax] -- max work id
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// [isMaster] -- Set to TRUE if this is a master index.
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// [fWritable] -- Set to TRUE if various streams should be
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// opened for Write access.
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// [fReadDir] -- should the directory be opened for r or r/w
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//
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// History: 3-Apr-91 BartoszM Created.
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//
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//----------------------------------------------------------------------------
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CPersIndex::CPersIndex(
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PStorage & storage,
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WORKID objectId,
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INDEXID iid,
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WORKID widMax,
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CDiskIndex::EDiskIndexType idxType,
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PStorage::EOpenMode mode,
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BOOL fReadDir ) :
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CDiskIndex( iid, idxType, widMax ),
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_sigPersIndex( eSigPersIndex ),
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_storage( storage ),
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_obj( storage.QueryObject( objectId ) ),
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_fAbortMerge( FALSE )
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{
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Win4Assert( PStorage::eOpenForWrite == mode ||
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PStorage::eOpenForRead == mode );
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PStorage::EOpenMode modeIndex = mode;
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//
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// Open master indexes writable so we can shrink them from the front
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//
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if ( CDiskIndex::eMaster == idxType )
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modeIndex = PStorage::eOpenForWrite;
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PMmStream * pStream = storage.QueryExistingIndexStream( _obj.GetObj(),
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modeIndex );
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XPtr<PMmStream> sStream( pStream );
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_xPhysIndex.Set( new CPhysIndex( storage,
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_obj.GetObj(),
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objectId,
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modeIndex,
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sStream ) );
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Win4Assert( 0 == sStream.GetPointer() );
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Win4Assert( fReadDir );
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if ( fReadDir )
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_xDir.Set( _storage.QueryExistingDirectory( _obj.GetObj(), mode ) );
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else
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_xDir.Set( _storage.QueryNewDirectory( _obj.GetObj() ) );
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CMergeSourceCursor::CMergeSourceCursor
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//
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// Synopsis: Constructor
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//
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// History: 29-Aug-92 BartoszM Created
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//
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//----------------------------------------------------------------------------
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CMergeSourceCursor::CMergeSourceCursor ( CIndexSnapshot& indSnap,
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const CKeyBuf * pKey )
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{
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if (0 != pKey)
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{
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CKey SplitKey(*pKey);
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_pCurSrc = indSnap.QueryMergeCursor ( &SplitKey );
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}
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else
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{
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_pCurSrc = indSnap.QueryMergeCursor ();
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}
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CMergeSourceCursor::~CMergeSourceCursor
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//
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// Synopsis: Destructor
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//
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// History: 29-Aug-92 BartoszM Created
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//
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//----------------------------------------------------------------------------
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CMergeSourceCursor::~CMergeSourceCursor ()
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{
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delete _pCurSrc;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CPersIndex::Merge, public
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//
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// Synopsis: Merge index(es) into an empty pesistent index.
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//
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// Effects: Fills the persistent index with data from the input
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// indexes.
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// [fresh] is deleted.
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//
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// Arguments: [indSnap] -- array of indexes to be merged
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// [pNewKeyList] -- Keylist to merge (master merge only)
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// [mergeProgress] -- % merge complete
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//
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// Requires: The index is initially empty.
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//
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// Notes: Every compressor is transacted.
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//
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// History: 15-May-91 KyleP Use new PutOccurrence() method.
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// 16-Apr-91 KyleP Created.
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// 17-Feb-93 KyleP Merge keylist
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// 25-Oct-95 DwightKr Add merge complete measurement
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//
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//----------------------------------------------------------------------------
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void CPersIndex::Merge( CIndexSnapshot& indSnap,
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const CPartition & partn,
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CCiFrmPerfCounter & mergeProgress,
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BOOL fGetRW )
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{
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// Calculate max of all input widMaxs
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#if CIDBG == 1
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unsigned cKey = 0;
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#endif
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WORKID widMax = indSnap.MaxWorkId();
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ciDebugOut (( DEB_ITRACE, "Max work id %ld\n", widMax ));
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SetMaxWorkId ( widMax );
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CFreshTest* pFreshTest = indSnap.GetFresh();
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CKeyBuf keyLast;
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CMergeSourceCursor pCurSrc( indSnap );
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if ( !pCurSrc.IsEmpty() )
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{
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//
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// Read-ahead on the source indexes results in better merge
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// performance, but slower queries. Temporarily switch modes.
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//
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CSetReadAhead readAhead( _storage );
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CPersComp compr( _xPhysIndex.GetReference(), _widMax );
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ciDebugOut (( DEB_ITRACE, "widMax passed to compressor: %ld\n",
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_widMax ));
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const CKeyBuf * pKey;
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ULONG page = ULONG(-1);
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BitOffset bitOff;
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#if CIDBG == 1
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keyLast.SetPid(pidContents); // arbitrary but not pidAll
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#endif
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#if CIDBG == 1
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WCHAR FirstLetter = '@';
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#endif
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mergeProgress.Update( 0 );
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ciDebugOut (( DEB_ITRACE,"Merging. Merge on letter: "));
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for (pKey = pCurSrc->GetKey();
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pKey != NULL; pKey = pCurSrc->GetNextKey())
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{
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#if CIDBG == 1
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cKey++;
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if ( *(pKey->GetStr()) != FirstLetter )
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{
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FirstLetter = *(pKey->GetStr());
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if ( FirstLetter < L'~' )
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ciDebugOut(( DEB_NOCOMPNAME | DEB_ITRACE | DEB_PENDING, "%c",
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FirstLetter ));
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else
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ciDebugOut(( DEB_NOCOMPNAME | DEB_ITRACE | DEB_PENDING, "<%04x>",
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FirstLetter ));
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}
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#endif
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//
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// Don't store empty keys
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//
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WORKID wid = pCurSrc->WorkId();
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if ( wid == widInvalid )
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continue;
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//
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// Add the key to the new index.
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//
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// This would later lead to a divide by 0
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Win4Assert( 0 != pCurSrc->WorkIdCount() );
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compr.PutKey(pKey, pCurSrc->WorkIdCount(), bitOff);
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for ( ;
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wid != widInvalid;
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wid = pCurSrc->NextWorkId())
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{
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// fresh test
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CFreshTest::IndexSource indexSrc =
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pFreshTest->IsCorrectIndex (pCurSrc->IndexId(), wid);
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//
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// There should always be an entry for a workid in the fresh
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// test whose data is contained in a wordlist/shadow-index.
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//
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Win4Assert( CFreshTest::Master != indexSrc );
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if ( CFreshTest::Invalid != indexSrc )
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{
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compr.PutWorkId(wid, pCurSrc->MaxOccurrence(), pCurSrc->OccurrenceCount());
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for (OCCURRENCE occ = pCurSrc->Occurrence();
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occ != OCC_INVALID;
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occ = pCurSrc->NextOccurrence())
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{
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compr.PutOccurrence(occ);
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}
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}
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}
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//
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// If this key didn't have any wids then we can delete it from
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// the new index. Otherwise, track it as a possible splitkey
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// and update the index as necessary.
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//
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if ( bitOff.Page() != page )
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{
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page = bitOff.Page();
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_xDir->Add ( bitOff, *pKey );
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}
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else
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{
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Win4Assert( page == _xDir->GetBitOffsetLastAdded().Page() );
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}
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keyLast = *pKey;
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//
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// There's no point in special abort code. We have to handle
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// exceptions anyway.
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//
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if ( _fAbortMerge || partn.IsCleaningUp() )
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{
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ciDebugOut(( DEB_ITRACE, "Aborting Merge\n" ));
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THROW( CException( STATUS_UNSUCCESSFUL ) );
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}
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mergeProgress.Update( _xPhysIndex->PagesInUse() * 100 / _xPhysIndex->PageSize() );
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}
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ciDebugOut(( DEB_ITRACE | DEB_PENDING, "%d keys in index\n", cKey ));
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// add sentinel key
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keyLast.FillMax();
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keyLast.SetPid( pidContents );
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compr.PutKey( &keyLast, 1, bitOff );
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//
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// If the MaxKey is the first key on a page, it must be added
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// to the directory.
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//
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if ( bitOff.Page() != page )
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{
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page = bitOff.Page();
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_xDir->Add ( bitOff, keyLast );
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}
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else
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{
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Win4Assert( page == _xDir->GetBitOffsetLastAdded().Page() );
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}
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mergeProgress.Update( 100 );
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compr.FreeStream();
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} // compr goes out of scope
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else
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{
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ciDebugOut (( DEB_ITRACE, "No merge cursor created\n" ));
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CPersComp compr( _xPhysIndex.GetReference(), _widMax );
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keyLast.FillMax();
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keyLast.SetPid(pidContents);
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BitOffset bitOff;
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compr.PutKey( &keyLast, 1, bitOff );
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compr.FreeStream();
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}
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//
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// Compressor MUST NOT be in scope here.
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//
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keyLast.FillMax();
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_xDir->LokFlushDir( keyLast );
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_xDir->LokBuildDir( keyLast );
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// after compr is dead
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_xPhysIndex->Flush();
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_xPhysIndex->Reopen( FALSE );
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} //Merge
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//+---------------------------------------------------------------------------
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//
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// Member: CPersIndex::QueryCursor, public
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//
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// Synopsis: Return a cursor for the whole persistent index.
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//
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// Returns: A new cursor.
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//
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// History: 24-Apr-91 KyleP Created.
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//
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//----------------------------------------------------------------------------
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CKeyCursor * CPersIndex::QueryCursor()
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{
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CKey key;
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key.FillMin();
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return QueryKeyCursor( &key );
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CPersIndex::QueryKeyCursor, public
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//
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// Synopsis: Return a key cursor for the shadow index when restarting a
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// master merge
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//
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// Returns: A new cursor.
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//
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// History: 12-Apr-94 DwightKr Created.
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//
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//----------------------------------------------------------------------------
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CKeyCursor * CPersIndex::QueryKeyCursor(const CKey * pKey)
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{
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BitOffset posKey;
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CKeyBuf keyInit;
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_xDir->Seek( *pKey, &keyInit, posKey );
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ciDebugOut(( DEB_ITRACE, "found key %.*ws at %lx:%lx\n",
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keyInit.StrLen(), keyInit.GetStr(),
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posKey.Page(), posKey.Offset() ));
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XPtr<CPersDeComp> xCursor( new CPersDeComp( _xDir.GetReference(),
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GetId(),
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_xPhysIndex.GetReference(),
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posKey,
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keyInit,
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pKey,
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_widMax ) );
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if ( 0 == xCursor->GetKey() )
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xCursor.Free();
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return xCursor.Acquire();
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} //QueryKeyCursor
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|
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//+---------------------------------------------------------------------------
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//
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// Member: CPersIndex::QueryCursor, public
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//
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// Synopsis: Return a cursor for the persistent index.
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//
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// Arguments: [pKey] -- Key to initially seek for.
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// [isRange] -- TRUE for range query
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// [cMaxNodes] -- Max number of nodes to create. Decremented
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// on return.
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//
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// Returns: A new cursor.
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//
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// History: 24-Apr-91 KyleP Created.
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//
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//----------------------------------------------------------------------------
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COccCursor * CPersIndex::QueryCursor( const CKey * pKey,
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BOOL isRange,
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ULONG & cMaxNodes )
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{
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Win4Assert( cMaxNodes > 0 );
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if (isRange)
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{
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CKey keyEnd;
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keyEnd.FillMax (*pKey);
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return QueryRangeCursor (pKey, &keyEnd, cMaxNodes);
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}
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if (pKey->Pid() == pidAll)
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return QueryRangeCursor ( pKey, pKey, cMaxNodes );
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cMaxNodes--;
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if ( 0 == cMaxNodes )
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{
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ciDebugOut(( DEB_WARN, "Node limit reached in CPersIndex::QueryCursor.\n" ));
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THROW( CException( STATUS_TOO_MANY_NODES ) );
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}
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BitOffset posKey;
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CKeyBuf keyInit;
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_xDir->Seek( *pKey, &keyInit, posKey );
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ciDebugOut(( DEB_ITRACE, "found key %.*ws at %lx:%lx\n",
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keyInit.StrLen(), keyInit.GetStr(),
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posKey.Page(), posKey.Offset() ));
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XPtr<CPersDeComp> xCursor( new CPersDeComp( _xDir.GetReference(),
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GetId(),
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_xPhysIndex.GetReference(),
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posKey,
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keyInit,
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pKey,
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_widMax ) );
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if ( xCursor->GetKey() == 0 || !pKey->MatchPid( *xCursor->GetKey())
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|| pKey->CompareStr(*xCursor->GetKey()) != 0 )
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{
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xCursor.Free();
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}
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return xCursor.Acquire();
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} //QueryCursor
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//+---------------------------------------------------------------------------
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//
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// Member: CPersIndex::QueryRangeCursor, public
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//
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// Synopsis: Return a range cursor for the persistent index.
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//
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// Arguments: [pKey] -- Key at beginning of the range.
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// [pKeyEnd] -- Key at the end of the range.
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// [cMaxNodes] -- Max number of nodes to create. Decremented
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// on return.
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//
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// Returns: A new cursor.
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//
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// History: 11-Dec-91 AmyA Created.
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// 31-Jan-92 AmyA Moved code to CreateRange().
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//
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//----------------------------------------------------------------------------
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|
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COccCursor * CPersIndex::QueryRangeCursor( const CKey * pKey,
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const CKey * pKeyEnd,
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ULONG & cMaxNodes )
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{
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Win4Assert( cMaxNodes > 0 );
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COccCurStack curStk;
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CreateRange(curStk, pKey, pKeyEnd, cMaxNodes );
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return curStk.QuerySynCursor( MaxWorkId() );
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CPersIndex::QuerySynCursor, public
|
|
//
|
|
// Synopsis: Return a synonym cursor for the persistent index.
|
|
//
|
|
// Arguments: [keyStk] -- Stack of keys to be searched for.
|
|
// [isRange] -- Whether or not this is a range search.
|
|
// [cMaxNodes] -- Max number of nodes to create. Decremented
|
|
// on return.
|
|
//
|
|
// Returns: A new cursor.
|
|
//
|
|
// History: 31-Jan-92 AmyA Created.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
COccCursor * CPersIndex::QuerySynCursor( CKeyArray & keyArr,
|
|
BOOL isRange,
|
|
ULONG & cMaxNodes )
|
|
{
|
|
COccCurStack curStk;
|
|
|
|
int keyCount = keyArr.Count();
|
|
|
|
for (int i = 0; i < keyCount; i++)
|
|
{
|
|
Win4Assert( cMaxNodes > 0 );
|
|
|
|
CKey& key = keyArr.Get(i);
|
|
|
|
if (isRange)
|
|
{
|
|
CKey keyEnd;
|
|
keyEnd.FillMax(key);
|
|
|
|
CreateRange(curStk, &key, &keyEnd, cMaxNodes );
|
|
}
|
|
else if ( key.Pid() == pidAll )
|
|
{
|
|
CreateRange ( curStk, &key, &key, cMaxNodes );
|
|
}
|
|
else
|
|
{
|
|
XPtr<COccCursor> xCursor( QueryCursor( &key, FALSE, cMaxNodes ) );
|
|
|
|
if ( !xCursor.IsNull() )
|
|
{
|
|
curStk.Push( xCursor.GetPointer() );
|
|
xCursor.Acquire();
|
|
}
|
|
}
|
|
}
|
|
|
|
return(curStk.QuerySynCursor( MaxWorkId()));
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CPersIndex::CreateRange, private
|
|
//
|
|
// Synopsis: Adds all cursors with keys between pKey and pKeyEnd to curStk.
|
|
//
|
|
// Arguments: [curStk] -- CKeyCurStack to add cursors to.
|
|
// [pKey] -- Key at beginning of range.
|
|
// [pKeyEnd] -- End of key range.
|
|
// [cMaxNodes] -- Max number of nodes to create. Decremented
|
|
// on return.
|
|
//
|
|
// History: 31-Jan-92 AmyA Created.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
void CPersIndex::CreateRange( COccCurStack & curStk,
|
|
const CKey * pKeyStart,
|
|
const CKey * pKeyEnd,
|
|
ULONG & cMaxNodes )
|
|
{
|
|
Win4Assert( cMaxNodes > 0 );
|
|
|
|
cMaxNodes--;
|
|
|
|
if ( 0 == cMaxNodes )
|
|
{
|
|
ciDebugOut(( DEB_WARN, "Node limit reached in CPersIndex::CreateRange.\n" ));
|
|
THROW( CException( STATUS_TOO_MANY_NODES ) );
|
|
}
|
|
|
|
BitOffset posKey;
|
|
CKeyBuf keyInit;
|
|
|
|
_xDir->Seek( *pKeyStart, &keyInit, posKey );
|
|
|
|
ciDebugOut (( DEB_ITRACE, "CreateRange %.*ws-%.*ws. Dir seek %.*ws, pid %d\n",
|
|
pKeyStart->StrLen(), pKeyStart->GetStr(),
|
|
pKeyEnd->StrLen(), pKeyEnd->GetStr(),
|
|
keyInit.StrLen(), keyInit.GetStr(),
|
|
keyInit.Pid() ));
|
|
|
|
CPersDeComp* pCursor = new CPersDeComp( _xDir.GetReference(),
|
|
GetId(),
|
|
_xPhysIndex.GetReference(),
|
|
posKey,
|
|
keyInit,
|
|
pKeyStart,
|
|
_widMax);
|
|
|
|
XPtr<CPersDeComp> xCursor( pCursor );
|
|
|
|
const CKeyBuf * pKeyCurrent = pCursor->GetKey();
|
|
if ( 0 == pKeyCurrent )
|
|
return;
|
|
|
|
PROPID pid = pKeyStart->Pid();
|
|
|
|
curStk.Push(pCursor);
|
|
xCursor.Acquire();
|
|
|
|
ciDebugOut(( DEB_ITRACE, "First key %.*ws, pid %d\n",
|
|
pKeyCurrent->StrLen(), pKeyCurrent->GetStr(), pKeyCurrent->Pid() ));
|
|
|
|
do
|
|
{
|
|
if (pid != pidAll) // exact pid match
|
|
{
|
|
// skip wrong pids
|
|
while (pid != pKeyCurrent->Pid())
|
|
{
|
|
#if CIDBG == 1 //------------------------------------------
|
|
if (pKeyCurrent)
|
|
{
|
|
ciDebugOut(( DEB_ITRACE, " skip: %.*ws, pid %d, wid %d\n",
|
|
pKeyCurrent->StrLen(),
|
|
pKeyCurrent->GetStr(),
|
|
pKeyCurrent->Pid(),
|
|
pCursor->WorkId() ));
|
|
}
|
|
else
|
|
ciDebugOut(( DEB_ITRACE, " <NULL> key\n" ));
|
|
#endif //--------------------------------------------------
|
|
pKeyCurrent = pCursor->GetNextKey();
|
|
if (pKeyCurrent == 0
|
|
|| pKeyEnd->CompareStr(*pKeyCurrent) < 0 )
|
|
break;
|
|
}
|
|
// either pid matches or we have overshot
|
|
// i.e. different pids and current string > end
|
|
}
|
|
|
|
if (pKeyCurrent == 0 || !pKeyEnd->MatchPid (*pKeyCurrent)
|
|
|| pKeyEnd->CompareStr (*pKeyCurrent) < 0 )
|
|
{
|
|
break; // <--- LOOP EXIT
|
|
}
|
|
|
|
cMaxNodes--;
|
|
|
|
if ( 0 == cMaxNodes )
|
|
{
|
|
ciDebugOut(( DEB_WARN, "Node limit reached in CPersIndex::CreateRange.\n" ));
|
|
THROW( CException( STATUS_TOO_MANY_NODES ) );
|
|
}
|
|
|
|
// Clone the previous cursor...
|
|
|
|
pCursor = new CPersDeComp(*pCursor);
|
|
|
|
xCursor.Set( pCursor );
|
|
|
|
// Add it to avoid memory leaks if GetNextKey fails
|
|
|
|
curStk.Push(pCursor); // may be wrong pid
|
|
|
|
xCursor.Acquire();
|
|
|
|
// increment the added cursor
|
|
|
|
pKeyCurrent = pCursor->GetNextKey();
|
|
|
|
#if CIDBG == 1
|
|
if (pKeyCurrent)
|
|
{
|
|
ciDebugOut(( DEB_ITRACE, " %.*ws, wid %d\n",
|
|
pKeyCurrent->StrLen(), pKeyCurrent->GetStr(), pCursor->WorkId() ));
|
|
}
|
|
else
|
|
ciDebugOut(( DEB_ITRACE, " <NULL> key\n" ));
|
|
#endif
|
|
|
|
} while ( pKeyCurrent );
|
|
|
|
// Since we have one more cursor in curStk than we wanted...
|
|
curStk.DeleteTop();
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CPersIndex::Remove, public
|
|
//
|
|
// Synopsis: Remove index from storage
|
|
//
|
|
// History: 02-May-91 BartoszM Created.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
void CPersIndex::Remove()
|
|
{
|
|
_xPhysIndex->Close();
|
|
_xDir->Close();
|
|
_obj->Close();
|
|
|
|
if ( !_storage.RemoveObject( ObjectId() ) )
|
|
{
|
|
DWORD dwError = GetLastError();
|
|
ciDebugOut(( DEB_ERROR, "Delete of index %08x failed: %d\n",
|
|
ObjectId(), dwError ));
|
|
}
|
|
}
|
|
|
|
#ifdef KEYLIST_ENABLED
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CPersIndex::AcquireRelevantWords, public
|
|
//
|
|
// Synopsis: Return relevant word key ids computed at the most recent
|
|
// master merge. The caller must delete the object returned.
|
|
//
|
|
// Returns: CRWStore *
|
|
//
|
|
// History: 25-Apr-94 v-dlee Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
CRWStore * CPersIndex::AcquireRelevantWords()
|
|
{
|
|
CRWStore *p = _pRWStore;
|
|
|
|
ciDebugOut (( DEB_ITRACE,"CPersIndex::acquire _pRWStore: %lx\n",_pRWStore));
|
|
|
|
_pRWStore = 0;
|
|
|
|
return p;
|
|
} //AcquireRelevantWords
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CPersIndex::ComputeRelevantWords, public
|
|
//
|
|
// Synopsis: Compute and return relevant word key ids
|
|
//
|
|
// Arguments: [cRows] -- # of wids in pwid array
|
|
// [cRW] -- max # of rw keys per wid
|
|
// [pwid] -- an array of wids in increasing order whose
|
|
// rw key ids are to be returned
|
|
// [pKeyList] -- keylist to use in translation of keys to ids
|
|
//
|
|
// Returns: CRWStore *
|
|
//
|
|
// History: 25-Apr-94 v-dlee Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
CRWStore * CPersIndex::ComputeRelevantWords(ULONG cRows,ULONG cRW,
|
|
WORKID *pwid,CKeyList *pKeyList)
|
|
{
|
|
ciDebugOut((DEB_ITRACE,"ComputeRelevantWords top\n"));
|
|
|
|
//
|
|
// Get the resources needed to do the computation
|
|
//
|
|
|
|
CRelevantWord RelWord(pwid,cRows,cRW);
|
|
|
|
CPersIndexCursor indCur(this);
|
|
CKeyListCursor keylCur(pKeyList);
|
|
|
|
|
|
//
|
|
// Walk through the index and find occurances of keys in the wids
|
|
//
|
|
const CKeyBuf * pKey, * pklKey;
|
|
|
|
for (pKey = indCur->GetKey(), pklKey = keylCur->GetKey();
|
|
pKey != 0; pKey = indCur->GetNextKey())
|
|
{
|
|
if (pKey->Pid() == pidContents &&
|
|
((CKeyBuf * const) pKey)->IsPossibleRW())
|
|
{
|
|
ULONG cWids = 0;
|
|
|
|
for (WORKID wid = indCur->WorkId(); wid != widInvalid;
|
|
wid = indCur->NextWorkId())
|
|
{
|
|
cWids++;
|
|
if (RelWord.isTrackedWid(wid))
|
|
RelWord.Add(wid,indCur->OccurrenceCount());
|
|
}
|
|
|
|
//
|
|
// Walk the keylist until we match it up with where the
|
|
// index cursor is.
|
|
//
|
|
while (pklKey->CompareStr(*pKey) != 0)
|
|
pklKey = keylCur->GetNextKey();
|
|
|
|
RelWord.DoneWithKey(pklKey->Pid(),MaxWorkId(),cWids);
|
|
}
|
|
}
|
|
|
|
return RelWord.AcquireStore();
|
|
} //ComputeRelevantWords
|
|
|
|
#endif // KEYLIST_ENABLED
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CPersIndex::MakeBackupCopy
|
|
//
|
|
// Synopsis: Makes a copy of the index and directory using the storage
|
|
// provided.
|
|
//
|
|
// Arguments: [storage] - Storage
|
|
//
|
|
// History: 3-17-97 srikants Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
void CPersIndex::MakeBackupCopy( PStorage & storage,
|
|
WORKID wid,
|
|
PSaveProgressTracker & tracker )
|
|
{
|
|
//
|
|
// Create an index in the destination storage.
|
|
//
|
|
CPersIndex * pDstIndex = new CPersIndex( storage,
|
|
wid,
|
|
GetId(),
|
|
_xPhysIndex->PageSize(),
|
|
IsMaster() ? eMaster : eShadow );
|
|
|
|
XPtr<CPersIndex> xDstIndex( pDstIndex );
|
|
|
|
//
|
|
// Make a backup copy of the stream.
|
|
//
|
|
_xPhysIndex->MakeBackupCopy( pDstIndex->_xPhysIndex.GetReference(),
|
|
tracker );
|
|
|
|
// Make a backup copy of the directory.
|
|
//
|
|
_xDir->MakeBackupCopy( storage, tracker );
|
|
}
|
|
|
|
|
|
#if CIDBG == 1
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Member: CDiskIndex::VerifyContents, public
|
|
//
|
|
// Synopsis: Walks through an index and thus verifies each key
|
|
//
|
|
// History: 28-Oct-94 DwightKr Created
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
void CDiskIndex::VerifyContents()
|
|
{
|
|
|
|
//
|
|
// Turn this on when we think we are missing keys.
|
|
//
|
|
|
|
#if 0
|
|
|
|
CKeyCursor *pCursor = QueryCursor();
|
|
|
|
if ( pCursor )
|
|
{
|
|
TRY
|
|
{
|
|
ciDebugOut((DEB_ITRACE, "Verifying contents of new index\n"));
|
|
WCHAR FirstLetter = '@';
|
|
|
|
for ( const CKeyBuf * pKey = pCursor->GetKey();
|
|
pKey != NULL; pKey = pCursor->GetNextKey())
|
|
{
|
|
if ( *(pKey->GetStr()) != FirstLetter )
|
|
{
|
|
FirstLetter = *(pKey->GetStr());
|
|
if ( FirstLetter < L'~' )
|
|
ciDebugOut(( DEB_NOCOMPNAME | DEB_ITRACE | DEB_PENDING, "%c",
|
|
FirstLetter ));
|
|
else
|
|
ciDebugOut(( DEB_NOCOMPNAME | DEB_ITRACE | DEB_PENDING, "<%04x>",
|
|
FirstLetter ));
|
|
}
|
|
}
|
|
|
|
ciDebugOut(( DEB_NOCOMPNAME | DEB_ITRACE | DEB_PENDING, "\n" ));
|
|
}
|
|
CATCH (CException, e)
|
|
{
|
|
ciDebugOut(( DEB_ERROR, "Error 0x%x while verifying contents of new index\n", e.GetErrorCode() ));
|
|
}
|
|
END_CATCH
|
|
|
|
delete pCursor;
|
|
}
|
|
|
|
#endif // 0
|
|
|
|
}
|
|
#endif
|