169 lines
4.2 KiB
C++
169 lines
4.2 KiB
C++
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1998
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//
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// File: isearch.hxx
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//
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// Contents: CSearch
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//
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// History: 23-Dec-1994 BartoszM Created
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//
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//--------------------------------------------------------------------------
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#pragma once
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#include <spropmap.hxx>
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#include <pidmap.hxx>
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#include <pidcvt.hxx>
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#include <lang.hxx>
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//+---------------------------------------------------------------------------
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//
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// Class: CHitSink
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//
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// Purpose: A repository of filter regions that comprise a single hit
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//
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// History: 10-Oct-94 BartoszM Created
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//
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//----------------------------------------------------------------------------
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class CHitSink
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{
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public:
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CHitSink () : _nFound(0), _aRegion(1) {}
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void Reset () { _nFound = 0; }
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void AddPosition ( const FILTERREGION& region );
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int Count () const { return _nFound; }
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const FILTERREGION& GetRegion (unsigned i) const { return _aRegion.Get(i); }
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private:
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unsigned _nFound;
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CDynArrayInPlace<FILTERREGION> _aRegion;
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CSearchHit
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//
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// Purpose: Combines rank and an array of filter regions comprising a hit
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//
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// History: 15-Sep-94 BartoszM Created
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//
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//----------------------------------------------------------------------------
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class CTextSource;
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class CSearchHit
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{
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public:
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CSearchHit ( LONG rank, unsigned count, FILTERREGION* aRegion )
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: _rank (rank), _count(count), _aRegion(aRegion)
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{}
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~CSearchHit ()
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{
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if (_aRegion)
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CoTaskMemFree (_aRegion);
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}
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LONG Rank () const { return _rank; }
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unsigned Count () const { return _count; }
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FILTERREGION* AcqHit ()
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{
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FILTERREGION* tmp = _aRegion;
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_aRegion = 0;
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return tmp;
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}
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const FILTERREGION& FirstRegion () const
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{
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return _aRegion[0];
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}
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private:
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LONG _rank;
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unsigned _count;
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FILTERREGION* _aRegion;
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};
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DECL_DYNSTACK ( CHitArray, CSearchHit );
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//+---------------------------------------------------------------------------
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//
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// Class: CSearch
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//
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// Purpose: Text searching using IFilter
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//
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// History: 15-Sep-94 BartoszM Created
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//
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//----------------------------------------------------------------------------
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extern "C" GUID CLSID_CSearch;
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class CDbRestriction;
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class CSearchKeyRepository;
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class CCursor;
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class CSearch : public ISearchQueryHits
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{
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public:
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CSearch( DBCOMMANDTREE * pRst,
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ICiCLangRes * pLangRes,
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ICiCOpenedDoc * pOpenedDoc );
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//
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// From IUnknown
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//
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virtual SCODE STDMETHODCALLTYPE QueryInterface(REFIID riid, void ** ppvObject);
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virtual ULONG STDMETHODCALLTYPE AddRef();
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virtual ULONG STDMETHODCALLTYPE Release();
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//
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// From ISearchQueryHits
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//
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virtual SCODE STDMETHODCALLTYPE Init(
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IFilter * pflt,
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ULONG ulFlags );
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virtual SCODE STDMETHODCALLTYPE NextHitMoniker(
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ULONG * pcMnk,
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IMoniker *** papMnk );
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virtual SCODE STDMETHODCALLTYPE NextHitOffset(
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ULONG * pcRegion,
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FILTERREGION ** paRegion );
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private:
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~CSearch();
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long _cRefs;
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void ConvertPositionsToHit( LONG rank );
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void Reset ();
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CSearchKeyRepository* _pKeyRep; // The repository of keys
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CHitArray _aHit; // Array of hits
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unsigned _iCurHit;
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CStandardPropMapper _propMapper; // Mapper to convert properties to pids.
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// Must precede _pidcvt.
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CPidConverter _pidcvt; // Pid converter. Must precede _pidmap.
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CCursor* _pCursor; // cursor tree corresponding to a restriction
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XRestriction _xRst; // query restriction
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CPidMapper _pidmap;
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CLangList _langList;
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CHitSink _hitSink; // the sink for hits. filled by the cursor tree
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XInterface<ICiCOpenedDoc> _xOpenedDoc;
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};
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