124 lines
3.4 KiB
C++
124 lines
3.4 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 - 2000.
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//
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// File: rstprop.hxx
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//
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// Contents: ICommandProperties support class
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//
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// Classes: CRowsetProperties
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//
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// History: 30 Jun 1995 AlanW Created
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//
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//----------------------------------------------------------------------------
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#pragma once
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#include <proprst.hxx>
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enum PropertyOptionsEnum {
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eSequential = 0x0001,
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eLocatable = 0x0002,
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eScrollable = 0x0004,
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eAsynchronous = 0x0008,
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// eNotifiable = 0x0010,
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eWatchable = 0x0020,
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eDistributed = 0x0100,
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eHoldRows = 0x0200,
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eChaptered = 0x0800,
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eUseCI = 0x1000,
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eDeferTrimming = 0x2000,
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eExtendedTypes = 0x4000,
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eFirstRows = 0x0080,
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eDefaultFalse = 0,
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eDefaultTrue = 0xFFFF,
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eNotSupported = 0xFFFE,
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eColumnProp = 0xFFFD,
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eNumeric = 0xFFFC,
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};
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class CRowsetProperties
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{
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public:
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CRowsetProperties( DWORD dwFlags = 0 ) :
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_uBooleanOptions ( dwFlags ),
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_ulMaxOpenRows ( 0 ),
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_ulMemoryUsage ( 0 ),
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_cMaxResults( 0 ),
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_cCmdTimeout( 0 ) { }
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CRowsetProperties( CRowsetProperties const & rProps ) :
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_uBooleanOptions ( rProps._uBooleanOptions ),
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_ulMaxOpenRows ( rProps._ulMaxOpenRows ),
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_ulMemoryUsage ( rProps._ulMemoryUsage ),
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_cMaxResults ( rProps._cMaxResults ),
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_cCmdTimeout( rProps._cCmdTimeout ) { }
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DWORD GetPropertyFlags( ) const { return _uBooleanOptions; }
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void SetDefaults( CRowsetProperties & rProp )
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{
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_uBooleanOptions = rProp._uBooleanOptions;
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_ulMaxOpenRows = rProp._ulMaxOpenRows;
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_ulMemoryUsage = rProp._ulMemoryUsage;
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_cMaxResults = rProp._cMaxResults;
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_cCmdTimeout = rProp._cCmdTimeout;
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}
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void SetDefaults( DWORD dwOptions, ULONG ulMaxRows = 0, ULONG ulMem = 0, ULONG cMaxResults = 0, ULONG cCmdTimeout = 0, ULONG cFirstRows = 0 )
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{
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_uBooleanOptions = dwOptions;
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_ulMaxOpenRows = ulMaxRows;
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_ulMemoryUsage = ulMem;
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_cCmdTimeout = cCmdTimeout;
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if ( cFirstRows > 0 )
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{
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if ( cMaxResults > 0 )
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THROW( CException( E_INVALIDARG ) );
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Win4Assert( 0 != ( eFirstRows & _uBooleanOptions ) );
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_cMaxResults = cFirstRows;
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}
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else
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_cMaxResults = cMaxResults;
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}
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void Marshall( PSerStream & ss ) const;
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void Unmarshall( PDeSerStream & ss );
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ULONG GetCommandTimeout() const { return _cCmdTimeout; }
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ULONG GetMaxResults() const
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{
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if ( IsFirstRowsSet() )
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return 0;
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else
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return _cMaxResults;
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}
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ULONG GetFirstRows() const
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{
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if ( IsFirstRowsSet() )
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return _cMaxResults;
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else
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return 0;
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}
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BOOL IsFirstRowsSet() const { return ( 0 != (eFirstRows & _uBooleanOptions) ); }
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private:
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DWORD _uBooleanOptions; // binary option flags
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ULONG _ulMaxOpenRows; // rowset info max. open rows
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ULONG _ulMemoryUsage; // rowset info mem. usage
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ULONG _cMaxResults; // limit on # results
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ULONG _cCmdTimeout; // query execution timeout
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};
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