114 lines
2.3 KiB
C
114 lines
2.3 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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schemaextensions.h
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Abstract:
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This file contains the definition of the CSchemaExtensions class.
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This is the only class that talks to the catalog.
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Author:
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MarcelV
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Revision History:
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Mohit Srivastava 28-Nov-00
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--*/
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#ifndef _schemaextensions_h_
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#define _schemaextensions_h_
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#include "catalog.h"
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#include "catmeta.h"
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#include <atlbase.h>
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//forward decl
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struct CTableMeta;
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struct CColumnMeta
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{
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CColumnMeta() {paTags = 0; cbDefaultValue = 0; cNrTags = 0;}
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~CColumnMeta() {delete [] paTags;}
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tCOLUMNMETARow ColumnMeta;
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ULONG cbDefaultValue;
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ULONG cNrTags;
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tTAGMETARow **paTags;
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};
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struct CTableMeta
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{
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CTableMeta () {paColumns=0;}
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~CTableMeta () {delete []paColumns;}
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ULONG ColCount () const
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{
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return *(TableMeta.pCountOfColumns);
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}
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tTABLEMETARow TableMeta;
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CColumnMeta **paColumns;
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};
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typedef tTAGMETARow * LPtTAGMETA;
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typedef CColumnMeta * LPCColumnMeta;
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class CSchemaExtensions
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{
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public:
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CSchemaExtensions ();
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~CSchemaExtensions ();
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HRESULT Initialize (bool i_bUseExtensions = true);
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CTableMeta* EnumTables(ULONG *io_idx);
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HRESULT GetMbSchemaTimeStamp(FILETIME* io_pFileTime) const;
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private:
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HRESULT GenerateIt ();
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HRESULT GetTables ();
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HRESULT GetColumns ();
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HRESULT GetTags ();
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HRESULT GetRelations ();
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HRESULT BuildInternalStructures ();
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CComPtr<ISimpleTableDispenser2> m_spDispenser;
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CComPtr<IMetabaseSchemaCompiler> m_spIMbSchemaComp;
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CComPtr<ISimpleTableRead2> m_spISTTableMeta;
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CComPtr<ISimpleTableRead2> m_spISTColumnMeta;
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CComPtr<ISimpleTableRead2> m_spISTTagMeta;
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CComPtr<ISimpleTableRead2> m_spISTRelationMeta;
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LPWSTR m_wszBinFileName;
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LPTSTR m_tszBinFilePath;
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CTableMeta* m_paTableMetas; // all table information
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ULONG m_cNrTables;
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CColumnMeta* m_paColumnMetas; // all column information
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ULONG m_cNrColumns;
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tTAGMETARow* m_paTags; // all tag information
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ULONG m_cNrTags;
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ULONG m_cQueryCells;
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STQueryCell* m_pQueryCells;
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bool m_bBinFileLoaded;
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};
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#endif // _schemaextensions_h_
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