242 lines
7.2 KiB
C++
242 lines
7.2 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 - 1995.
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//
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// File: StdQSpec.cxx
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//
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// Contents: ICommand for file-based queries
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//
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// Classes: CMetadataQuerySpec
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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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#include <pch.cxx>
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#pragma hdrstop
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#include "metqspec.hxx"
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//+-------------------------------------------------------------------------
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//
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// Member: CMetadataQuerySpec::CMetadataQuerySpec, public
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//
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// Synopsis: Constructor of a CMetadataQuerySpec
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//
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// Arguments: [pOuterUnk] - Outer unknown
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// [ppMyUnk] - OUT: filled in with pointer to non-delegated
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// IUnknown on return
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// [eType] - Class of metadata to return
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// [pCat] - Content index catalog
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// [pMachine]
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//
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// History: 08-Feb-96 KyleP Added support for virtual paths
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//
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//--------------------------------------------------------------------------
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CMetadataQuerySpec::CMetadataQuerySpec (
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IUnknown * pOuterUnk,
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IUnknown ** ppMyUnk,
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CiMetaData eType,
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WCHAR const * pCat,
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WCHAR const * pMachine )
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: CRootQuerySpec(pOuterUnk, ppMyUnk),
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_eType( eType ),
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_pCat(0),
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_pMachine(0)
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{
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//
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// Make a copy of the catalog string for ICommand::Clone
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//
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unsigned len = wcslen( pCat ) + 1;
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_pCat = new WCHAR[len];
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RtlCopyMemory( _pCat, pCat, len * sizeof(WCHAR) );
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//
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// Make a copy of the machine string for ICommand::Clone
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//
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if ( 0 != pMachine )
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{
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len = wcslen( pMachine ) + 1;
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_pMachine = new WCHAR[len];
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RtlCopyMemory( _pMachine, pMachine, len * sizeof(WCHAR) );
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}
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END_CONSTRUCTION( CMetadataQuerySpec );
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}
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//+-------------------------------------------------------------------------
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//
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// Member: CMetadataQuerySpec::~CMetadataQuerySpec, private
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//
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// Synopsis: Destructor of a CMetadataQuerySpec
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//
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//--------------------------------------------------------------------------
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CMetadataQuerySpec::~CMetadataQuerySpec()
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{
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delete [] _pCat;
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delete [] _pMachine;
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}
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//+-------------------------------------------------------------------------
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//
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// Member: CMetadataQuerySpec::QueryInternalQuery, protected
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//
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// Synopsis: Instantiates internal query, using current parameters.
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//
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// Returns: Pointer to internal query object.
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//
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// History: 03-Mar-1997 KyleP Created
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//
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//--------------------------------------------------------------------------
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PIInternalQuery * CMetadataQuerySpec::QueryInternalQuery()
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{
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//
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// get a pointer to the IInternalQuery interface
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//
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PIInternalQuery * pQuery = 0;
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SCODE sc = EvalMetadataQuery( &pQuery, _eType, _pCat, _pMachine );
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if ( FAILED( sc ) )
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THROW( CException( sc ) );
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return pQuery;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: MakeMetadataICommand
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//
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// Synopsis: Evaluate the metadata query
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//
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// Arguments: [ppQuery] -- Returns the IUnknown for the command
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// [eType] -- Type of metadata (vroot, proot, etc)
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// [wcsCat] -- Catalog
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// [wcsMachine] -- Machine name for meta query
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// [pOuterUnk] -- (optional) outer unknown pointer
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//
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// Returns SCODE result
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//
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// History: 15-Apr-96 SitaramR Created header
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// 29-May-97 EmilyB Added aggregation support, so now
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// returns IUnknown ptr and caller
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// must now call QI to get ICommand ptr
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//
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//----------------------------------------------------------------------------
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SCODE MakeMetadataICommand(
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IUnknown ** ppQuery,
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CiMetaData eType,
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WCHAR const * wcsCat,
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WCHAR const * wcsMachine,
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IUnknown * pOuterUnk )
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{
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//
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// Check for invalid parameters
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//
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if ( 0 == wcsCat ||
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0 == ppQuery ||
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( eType != CiVirtualRoots &&
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eType != CiPhysicalRoots &&
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eType != CiProperties ) )
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{
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return E_INVALIDARG;
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}
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*ppQuery = 0;
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CMetadataQuerySpec * pQuery = 0;
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SCODE sc = S_OK;
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TRANSLATE_EXCEPTIONS;
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TRY
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{
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pQuery = new CMetadataQuerySpec( pOuterUnk, ppQuery, eType,
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wcsCat,
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wcsMachine );
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}
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CATCH( CException, e )
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{
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Win4Assert(0 == pQuery);
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sc = e.GetErrorCode();
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}
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END_CATCH
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UNTRANSLATE_EXCEPTIONS;
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return sc;
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} //MakeMetadataICommand
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//+---------------------------------------------------------------------------
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//
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// Method: CMetadataQuerySpec::GetProperties, public
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//
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// Synopsis: Get rowset properties
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//
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// Arguments: [cPropertySetIDs] - number of desired property set IDs or 0
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// [rgPropertySetIDs] - array of desired property set IDs or NULL
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// [pcPropertySets] - number of property sets returned
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// [prgPropertySets] - array of returned property sets
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//
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// Returns: SCODE - result code indicating error return status. One of
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// S_OK, DB_S_ERRORSOCCURRED or DB_E_ERRORSOCCURRED. Any
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// other errors are thrown.
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//
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// History: 12-Mayr-97 dlee Created
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//
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//----------------------------------------------------------------------------
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SCODE STDMETHODCALLTYPE CMetadataQuerySpec::GetProperties(
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ULONG const cPropertySetIDs,
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DBPROPIDSET const rgPropertySetIDs[],
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ULONG * pcPropertySets,
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DBPROPSET ** prgPropertySets)
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{
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_DBErrorObj.ClearErrorInfo();
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SCODE scParent = CRootQuerySpec::GetProperties( cPropertySetIDs,
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rgPropertySetIDs,
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pcPropertySets,
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prgPropertySets );
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if ( S_OK != scParent )
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_DBErrorObj.PostHResult( scParent, IID_ICommandProperties );
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return scParent;
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} //GetProperties
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//+---------------------------------------------------------------------------
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//
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// Method: CMetadataQuerySpec::SetProperties, public
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//
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// Synopsis: Set rowset scope properties
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//
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// Arguments: [cPropertySets] - number of property sets
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// [rgPropertySets] - array of property sets
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//
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// Returns: SCODE - result code indicating error return status. One of
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// S_OK, DB_S_ERRORSOCCURRED or DB_E_ERRORSOCCURRED. Any
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// other errors are thrown.
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//
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// History: 12-Mayr-97 dlee Created
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//
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//----------------------------------------------------------------------------
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SCODE STDMETHODCALLTYPE CMetadataQuerySpec::SetProperties(
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ULONG cPropertySets,
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DBPROPSET rgPropertySets[] )
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{
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_DBErrorObj.ClearErrorInfo();
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SCODE scParent = CRootQuerySpec::SetProperties( cPropertySets,
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rgPropertySets );
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if ( S_OK != scParent )
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_DBErrorObj.PostHResult( scParent, IID_ICommandProperties );
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return scParent;
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} //SetProperties
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