391 lines
8.9 KiB
C++
391 lines
8.9 KiB
C++
//---------------------------------------------------------------------------
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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: cenumsch.cxx
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//
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// Contents: Windows NT 3.5 Schema Enumeration Code
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//
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// CNWCOMPATSchemaEnum::CNWCOMPATSchemaEnum()
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// CNWCOMPATSchemaEnum::CNWCOMPATSchemaEnum
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// CNWCOMPATSchemaEnum::EnumObjects
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// CNWCOMPATSchemaEnum::EnumObjects
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//
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// History:
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//----------------------------------------------------------------------------
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#include "NWCOMPAT.hxx"
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#pragma hdrstop
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//+---------------------------------------------------------------------------
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//
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// Function: CNWCOMPATSchemaEnum::Create
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//
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// Synopsis:
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//
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// Arguments: [pCollection]
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// [ppEnumVariant]
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//
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// Returns: HRESULT
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//
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// Modifies:
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//
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// History: 01-30-95 yihsins Created.
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//
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//----------------------------------------------------------------------------
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HRESULT
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CNWCOMPATSchemaEnum::Create(
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CNWCOMPATSchemaEnum FAR* FAR* ppenumvariant,
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BSTR bstrADsPath,
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BSTR bstrName,
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VARIANT vFilter
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)
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{
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HRESULT hr = S_OK;
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CNWCOMPATSchemaEnum FAR* penumvariant = NULL;
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*ppenumvariant = NULL;
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penumvariant = new CNWCOMPATSchemaEnum();
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if (!penumvariant)
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{
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hr = E_OUTOFMEMORY;
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BAIL_ON_FAILURE(hr);
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}
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hr = ADsAllocString( bstrADsPath, &penumvariant->_bstrADsPath);
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BAIL_ON_FAILURE(hr);
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hr = ADsAllocString( bstrName, &penumvariant->_bstrName);
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BAIL_ON_FAILURE(hr);
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hr = ObjectTypeList::CreateObjectTypeList(
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vFilter,
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&penumvariant->_pObjList );
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BAIL_ON_FAILURE(hr);
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*ppenumvariant = penumvariant;
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RRETURN(hr);
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error:
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delete penumvariant;
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RRETURN_EXP_IF_ERR(hr);
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}
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CNWCOMPATSchemaEnum::CNWCOMPATSchemaEnum()
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: _bstrADsPath( NULL ),
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_bstrName( NULL ),
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_pObjList( NULL ),
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_dwCurrentEntry( 0 ),
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_dwPropCurrentEntry( 0 )
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{
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}
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CNWCOMPATSchemaEnum::~CNWCOMPATSchemaEnum()
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{
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ADsFreeString( _bstrName );
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ADsFreeString( _bstrADsPath );
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if ( _pObjList != NULL )
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{
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delete _pObjList;
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_pObjList = NULL;
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}
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}
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//+---------------------------------------------------------------------------
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//
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// Function: CNWCOMPATSchemaEnum::Next
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//
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// Synopsis: Returns cElements number of requested NetOle objects in the
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// array supplied in pvar.
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//
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// Arguments: [cElements] -- The number of elements requested by client
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// [pvar] -- ptr to array of VARIANTs to for return objects
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// [pcElementFetched] -- if non-NULL, then number of elements
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// -- actually returned is placed here
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//
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// Returns: HRESULT -- S_OK if number of elements requested are returned
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// -- S_FALSE if number of elements is < requested
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//
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// Modifies:
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//
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// History: 11-3-95 yihsins Created.
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//
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//----------------------------------------------------------------------------
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STDMETHODIMP
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CNWCOMPATSchemaEnum::Next(
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ULONG cElements,
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VARIANT FAR* pvar,
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ULONG FAR* pcElementFetched
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)
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{
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ULONG cElementFetched = 0;
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HRESULT hr = S_OK;
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hr = EnumObjects( cElements,
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pvar,
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&cElementFetched );
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if ( pcElementFetched )
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*pcElementFetched = cElementFetched;
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RRETURN_EXP_IF_ERR(hr);
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}
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HRESULT
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CNWCOMPATSchemaEnum::EnumObjects(
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DWORD ObjectType,
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ULONG cElements,
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VARIANT FAR * pvar,
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ULONG FAR * pcElementFetched
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)
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{
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switch (ObjectType)
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{
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case NWCOMPAT_CLASS_ID:
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RRETURN (EnumClasses(cElements, pvar, pcElementFetched));
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case NWCOMPAT_PROPERTY_ID:
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RRETURN (EnumProperties(cElements, pvar, pcElementFetched));
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case NWCOMPAT_SYNTAX_ID:
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RRETURN(EnumSyntaxObjects(cElements, pvar, pcElementFetched));
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default:
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RRETURN(S_FALSE);
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}
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}
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HRESULT
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CNWCOMPATSchemaEnum::EnumObjects(
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ULONG cElements,
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VARIANT FAR* pvar,
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ULONG FAR* pcElementFetched
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)
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{
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DWORD i;
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ULONG cRequested = 0;
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ULONG cFetchedByPath = 0;
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ULONG cTotalFetched = 0;
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VARIANT FAR* pPathvar = pvar;
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HRESULT hr = S_OK;
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DWORD ObjectType;
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for (i = 0; i < cElements; i++)
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VariantInit(&pvar[i]);
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cRequested = cElements;
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while ( SUCCEEDED( _pObjList->GetCurrentObject(&ObjectType))
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&& ((hr = EnumObjects( ObjectType,
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cRequested,
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pPathvar,
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&cFetchedByPath)) == S_FALSE )
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)
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{
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pPathvar += cFetchedByPath;
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cRequested -= cFetchedByPath;
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cTotalFetched += cFetchedByPath;
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cFetchedByPath = 0;
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if ( FAILED(_pObjList->Next()) )
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{
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if ( pcElementFetched )
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*pcElementFetched = cTotalFetched;
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RRETURN(S_FALSE);
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}
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_dwCurrentEntry = 0;
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}
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if ( pcElementFetched )
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*pcElementFetched = cTotalFetched + cFetchedByPath;
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RRETURN(hr);
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}
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HRESULT
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CNWCOMPATSchemaEnum::EnumClasses(
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ULONG cElements,
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VARIANT FAR* pvar,
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ULONG FAR* pcElementFetched
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)
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{
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HRESULT hr = S_OK;
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DWORD i = 0;
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IDispatch *pDispatch = NULL;
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while ( i < cElements )
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{
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hr = GetClassObject(&pDispatch);
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if ( hr == S_FALSE )
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break;
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VariantInit( &pvar[i] );
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pvar[i].vt = VT_DISPATCH;
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pvar[i].pdispVal = pDispatch;
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(*pcElementFetched)++;
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i++;
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}
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RRETURN(hr);
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}
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HRESULT
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CNWCOMPATSchemaEnum::GetClassObject(
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IDispatch ** ppDispatch
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)
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{
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HRESULT hr = S_OK;
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//
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// Now send back the current ovbject
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//
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if ( _dwCurrentEntry >= g_cNWCOMPATClasses )
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goto error;
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hr = CNWCOMPATClass::CreateClass(
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_bstrADsPath,
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&g_aNWCOMPATClasses[_dwCurrentEntry],
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ADS_OBJECT_BOUND,
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IID_IDispatch,
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(void **)ppDispatch
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);
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BAIL_ON_FAILURE(hr);
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_dwCurrentEntry++;
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RRETURN(S_OK);
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error:
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*ppDispatch = NULL;
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RRETURN(S_FALSE);
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}
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HRESULT
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CNWCOMPATSchemaEnum::EnumSyntaxObjects(
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ULONG cElements,
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VARIANT FAR* pvar,
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ULONG FAR* pcElementFetched
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)
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{
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HRESULT hr = S_OK;
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DWORD i = 0;
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IDispatch *pDispatch = NULL;
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while ( i < cElements )
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{
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hr = GetSyntaxObject(&pDispatch);
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if ( hr == S_FALSE )
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break;
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VariantInit( &pvar[i] );
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pvar[i].vt = VT_DISPATCH;
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pvar[i].pdispVal = pDispatch;
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(*pcElementFetched)++;
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i++;
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}
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RRETURN(hr);
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}
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HRESULT
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CNWCOMPATSchemaEnum::GetSyntaxObject(
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IDispatch ** ppDispatch
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)
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{
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HRESULT hr = S_OK;
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//
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// Now send back the current object
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//
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if ( _dwCurrentEntry >= g_cNWCOMPATSyntax )
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goto error;
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hr = CNWCOMPATSyntax::CreateSyntax(
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_bstrADsPath,
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&g_aNWCOMPATSyntax[_dwCurrentEntry],
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ADS_OBJECT_BOUND,
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IID_IDispatch,
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(void **)ppDispatch
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);
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BAIL_ON_FAILURE(hr);
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_dwCurrentEntry++;
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RRETURN(S_OK);
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error:
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*ppDispatch = NULL;
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RRETURN(S_FALSE);
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}
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HRESULT
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CNWCOMPATSchemaEnum::EnumProperties(
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ULONG cElements,
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VARIANT FAR* pvar,
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ULONG FAR* pcElementFetched
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)
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{
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HRESULT hr = S_OK;
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DWORD i = 0;
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IDispatch *pDispatch = NULL;
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while ( i < cElements )
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{
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hr = GetPropertyObject(&pDispatch);
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if ( hr == S_FALSE )
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break;
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VariantInit( &pvar[i] );
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pvar[i].vt = VT_DISPATCH;
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pvar[i].pdispVal = pDispatch;
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(*pcElementFetched)++;
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i++;
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}
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RRETURN(hr);
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}
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HRESULT
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CNWCOMPATSchemaEnum::GetPropertyObject(
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IDispatch ** ppDispatch
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)
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{
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HRESULT hr = S_OK;
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//
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// Now send back the current ovbject
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//
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if ( _dwPropCurrentEntry >= g_cNWCOMPATProperties )
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goto error;
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hr = CNWCOMPATProperty::CreateProperty(
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_bstrADsPath,
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&g_aNWCOMPATProperties[_dwPropCurrentEntry],
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ADS_OBJECT_BOUND,
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IID_IDispatch,
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(void **)ppDispatch
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);
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BAIL_ON_FAILURE(hr);
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_dwPropCurrentEntry++;
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RRETURN(S_OK);
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error:
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*ppDispatch = NULL;
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RRETURN(S_FALSE);
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}
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