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1355 lines
39 KiB
1355 lines
39 KiB
//-----------------------------------------------------------------------------
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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: crowprov.cxx
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//
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// Contents: IProvider implementation for ADSI rowsets
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//
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// Functions:
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//
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// Notes:
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//
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//
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// History: 07/10/96 | RenatoB | Created, lifted most from EricJ code
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//-----------------------------------------------------------------------------
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// Includes
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#include "oleds.hxx"
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HRESULT
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PackLargeInteger(
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LARGE_INTEGER *plargeint,
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PVARIANT pVarDestObject
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);
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HRESULT
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PackDNWithBinary(
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PADS_DN_WITH_BINARY pDNWithBinary,
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PVARIANT pVarDestObject
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);
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HRESULT
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PackDNWithString(
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PADS_DN_WITH_STRING pDNWithString,
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PVARIANT pVarDestObject
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);
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//+---------------------------------------------------------------------------
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//
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// Function: CreateRowProvider
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//
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// Synopsis: @mfunc Creates and initializes a Row provider .
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//
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//----------------------------------------------------------------------------
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HRESULT
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CRowProvider::CreateRowProvider(
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IDirectorySearch * pDSSearch,
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LPWSTR pszFilter,
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LPWSTR * ppszAttrs,
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DWORD cAttrs,
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DBORDINAL cColumns, // count of the rowset's columns
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DBCOLUMNINFO * rgInfo, // array of cColumns DBCOLUMNINFO's
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OLECHAR* pStringsBuffer, // the names of the columns are here
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REFIID riid,
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BOOL * pMultiValued,
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BOOL fADSPathPresent,
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CCredentials * pCredentials,
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void ** ppvObj // the created Row provider
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)
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{
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HRESULT hr;
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CRowProvider * pRowProvider = NULL;
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if( ppvObj )
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*ppvObj = NULL;
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else
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BAIL_ON_FAILURE( hr = E_INVALIDARG );
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pRowProvider = new CRowProvider();
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if( pRowProvider == NULL )
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BAIL_ON_FAILURE( hr = E_OUTOFMEMORY );
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//
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//initialize rowprovider with the search filter and the columnsinfo
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//
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hr = pRowProvider->FInit(
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pDSSearch,
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pszFilter,
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ppszAttrs,
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cAttrs,
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cColumns,
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rgInfo,
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pStringsBuffer,
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pMultiValued,
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fADSPathPresent,
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pCredentials
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);
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if( FAILED(hr) ) {
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delete pRowProvider;
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BAIL_ON_FAILURE( hr );
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}
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//
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// This interface pointer is embedded in the pRowProvider.
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//
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pDSSearch = NULL;
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hr = pRowProvider->QueryInterface( riid, ppvObj);
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if( FAILED(hr) ) {
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delete pRowProvider;
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BAIL_ON_FAILURE( hr );
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}
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pRowProvider->Release();
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RRETURN( S_OK );
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error:
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if( pDSSearch )
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pDSSearch->Release();
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RRETURN( hr );
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}
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//+---------------------------------------------------------------------------
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//
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// Function: CRowProvider::CRowProvider
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//
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//----------------------------------------------------------------------------
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CRowProvider::CRowProvider()
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:
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_pMalloc (NULL),
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_cColumns (0),
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_ColInfo (NULL),
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_pwchBuf (NULL),
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_hSearchHandle (NULL),
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_pdbSearchCol (NULL),
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_pDSSearch (NULL),
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_pMultiValued (NULL),
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_fADSPathPresent (FALSE),
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_iAdsPathIndex (0),
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_pCredentials (NULL)
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{
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}
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//+---------------------------------------------------------------------------
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//
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// Function: CRowProvider::~CRowProvider
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//
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//----------------------------------------------------------------------------
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CRowProvider::~CRowProvider()
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{
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ULONG i;
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if( _hSearchHandle != NULL )
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_pDSSearch->CloseSearchHandle(_hSearchHandle);
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if( _pDSSearch != NULL )
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_pDSSearch->Release();
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// Release the memory allocated for columns and ColumnsInfo
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if (_pMalloc != NULL) {
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if( _pdbSearchCol != NULL ) {
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_pMalloc->Free((void*)_pdbSearchCol);
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}
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if( _ColInfo != NULL )
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_pMalloc->Free(_ColInfo);
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if( _pwchBuf != NULL )
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_pMalloc->Free(_pwchBuf);
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_pMalloc->Release();
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}
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if( _pMultiValued ) {
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FreeADsMem(_pMultiValued);
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}
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if( _pCredentials )
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delete _pCredentials;
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};
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//+---------------------------------------------------------------------------
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//
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// Function: CRowProvider::Finit
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//
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//----------------------------------------------------------------------------
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STDMETHODIMP
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CRowProvider::FInit(
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IDirectorySearch * pDSSearch,
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LPWSTR pszFilter,
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LPWSTR * ppszAttrs,
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DWORD cAttrs,
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DBORDINAL cColumns,
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DBCOLUMNINFO * rgInfo,
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OLECHAR * pStringsBuffer,
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BOOL * pMultiValued,
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BOOL fADSPathPresent,
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CCredentials * pCredentials)
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{
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HRESULT hr;
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ULONG i;
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ULONG cChars, cCharDispl;
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//
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// Asserts
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//
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ADsAssert(cColumns);
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ADsAssert(rgInfo);
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ADsAssert(pDSSearch);
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_cColumns= cColumns;
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hr = CoGetMalloc(MEMCTX_TASK, &_pMalloc);
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BAIL_ON_FAILURE( hr );
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_ColInfo = (DBCOLUMNINFO*)_pMalloc->Alloc((size_t)(cColumns *sizeof(DBCOLUMNINFO)));
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if( _ColInfo == NULL )
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BAIL_ON_FAILURE( hr=E_OUTOFMEMORY );
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memcpy(_ColInfo, rgInfo, (size_t)(cColumns * sizeof(DBCOLUMNINFO)));
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cChars = _pMalloc->GetSize(pStringsBuffer);
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_pwchBuf = (WCHAR*)_pMalloc->Alloc(cChars);
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if( _pwchBuf == NULL )
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BAIL_ON_FAILURE( hr=E_OUTOFMEMORY );
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memcpy(_pwchBuf, (void*)pStringsBuffer , cChars);
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for (i=0; i<_cColumns; i++) {
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if( rgInfo[i].pwszName ) {
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cCharDispl = (ULONG)(rgInfo[i].pwszName - pStringsBuffer);
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_ColInfo[i].pwszName = _pwchBuf + cCharDispl;
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_ColInfo[i].columnid.uName.pwszName = _pwchBuf + cCharDispl;
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}
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}
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// We have adspath at the end of the attribute list.
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_fADSPathPresent = fADSPathPresent ;
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//Store credentials if non-NULL.
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if( pCredentials ) {
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//We don't expect that _pCredentials is already non-NULL
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ADsAssert(_pCredentials == NULL);
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_pCredentials = new CCredentials(*pCredentials);
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if( !_pCredentials )
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BAIL_ON_FAILURE( hr=E_OUTOFMEMORY );
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}
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if( _fADSPathPresent == FALSE )
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cAttrs++;
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//
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// Create _pdbSearchCol, a member containing an array
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// of DB_SEARCH_COLUMN.
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// Reason for this is that trowset.cpp sometimes asks
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// for GetColumn twice: one to get the size of the column
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// and one to get the data.
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// Since OLEDP copies data, we do not want to have two copies
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// around
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//
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_pdbSearchCol = (PDB_SEARCH_COLUMN)_pMalloc->Alloc((ULONG)((cColumns + 1)*sizeof(DB_SEARCH_COLUMN)));
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if( _pdbSearchCol == NULL ) {
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hr = E_OUTOFMEMORY;
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goto error;
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}
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_pDSSearch = pDSSearch;
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hr = _pDSSearch->ExecuteSearch(
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pszFilter,
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ppszAttrs,
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cAttrs,
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&_hSearchHandle
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);
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BAIL_ON_FAILURE( hr );
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_pMultiValued = pMultiValued;
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RRETURN( hr );
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error:
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if( _pMalloc != NULL ) {
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if( _pdbSearchCol != NULL ) {
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_pMalloc->Free((void*)_pdbSearchCol);
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_pdbSearchCol= NULL;
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};
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if( _ColInfo != NULL ) {
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_pMalloc->Free(_ColInfo);
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_ColInfo = NULL;
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}
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if( _pwchBuf != NULL ) {
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_pMalloc->Free(_pwchBuf);
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_pwchBuf = NULL;
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}
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_pMalloc->Release();
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_pMalloc = NULL;
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};
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if (_hSearchHandle != NULL)
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_pDSSearch->CloseSearchHandle(_hSearchHandle);
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_hSearchHandle = NULL;
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_pDSSearch = NULL;
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RRETURN( hr );
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}
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//+---------------------------------------------------------------------------
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//
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// Function: CRowProvider::QueryInterface
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//
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//----------------------------------------------------------------------------
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STDMETHODIMP
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CRowProvider::QueryInterface(
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REFIID riid,
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LPVOID * ppv)
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{
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if( !ppv )
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RRETURN( E_INVALIDARG );
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if( riid == IID_IUnknown
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|| riid == IID_IRowProvider )
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*ppv = (IRowProvider FAR *) this;
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else if( riid == IID_IColumnsInfo )
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*ppv = (IColumnsInfo FAR *) this;
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else {
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*ppv = NULL;
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return E_NOINTERFACE;
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}
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AddRef();
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RRETURN( S_OK );
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}
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//-----------------------------------------------------------------------------
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//
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// Function: CRowProvider::NextRow
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//
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// Synopsis: Advance to the next row.
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//
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// Called by: Client.
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// Called when: To advance to next row.
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// This sets the "current" row.
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// Initially the "current" row is prior to the first actual row.
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// (Which means This must be called prior to the first GetColumn call.)
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//
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//----------------------------------------------------------------------------
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STDMETHODIMP
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CRowProvider::NextRow()
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{
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HRESULT hr;
|
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ULONG i;
|
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DWORD dwType, dwExtError = ERROR_SUCCESS;
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VARTYPE vType = VT_NULL;
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const int ERROR_BUF_SIZE = 512;
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const int NAME_BUF_SIZE = 128;
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WCHAR ErrorBuf[ERROR_BUF_SIZE];
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WCHAR NameBuf[NAME_BUF_SIZE];
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do {
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// Clear the ADSI extended error, so that after the call to GetNextRow,
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// we can safely check if an extended error was set.
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ADsSetLastError(ERROR_SUCCESS, NULL, NULL);
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dwExtError = ERROR_SUCCESS;
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//
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// read the next row
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//
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hr = _pDSSearch->GetNextRow(
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_hSearchHandle
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);
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// we should treat SIZE_LIMIT_EXCEEDED error message as
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// S_ADS_NOMORE_ROWS
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// in the future, we might want to return this error message
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// to the user under non-paged search situation
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if (LIMIT_EXCEEDED_ERROR(hr))
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hr = S_ADS_NOMORE_ROWS;
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BAIL_ON_FAILURE( hr );
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if (hr == S_ADS_NOMORE_ROWS)
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{
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// check if more results are likely (pagedTimeLimit search). If so,
|
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// we will keep trying till a row is obtained.
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hr = ADsGetLastError(&dwExtError, ErrorBuf, ERROR_BUF_SIZE,
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NameBuf, NAME_BUF_SIZE);
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BAIL_ON_FAILURE(hr);
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|
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if (dwExtError != ERROR_MORE_DATA)
|
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// we really have no more data
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RRETURN(DB_S_ENDOFROWSET);
|
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}
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} while(ERROR_MORE_DATA == dwExtError);
|
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|
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//
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//read all the columnsinto _pdbSearchCol leaving the bookmark column
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//
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for (i=1; i<_cColumns; i++) {
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hr = _pDSSearch->GetColumn(
|
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_hSearchHandle,
|
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_ColInfo[i].pwszName,
|
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&(_pdbSearchCol[i].adsColumn)
|
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);
|
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if (FAILED(hr) && hr != E_ADS_COLUMN_NOT_SET)
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goto error;
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|
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if (hr == E_ADS_COLUMN_NOT_SET ||
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_pdbSearchCol[i].adsColumn.dwNumValues == 0) {
|
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|
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_pdbSearchCol[i].dwStatus = DBSTATUS_S_ISNULL;
|
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_pdbSearchCol[i].dwType = DBTYPE_EMPTY;
|
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_pdbSearchCol[i].dwLength = 0;
|
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hr = S_OK;
|
|
|
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}
|
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else if (_ColInfo[i].wType == (DBTYPE_VARIANT | DBTYPE_BYREF)) {
|
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_pdbSearchCol[i].dwStatus = DBSTATUS_S_OK;
|
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_pdbSearchCol[i].dwType = _ColInfo[i].wType;
|
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_pdbSearchCol[i].dwLength = sizeof(VARIANT);
|
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}
|
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else if ((ULONG) _pdbSearchCol[i].adsColumn.dwADsType >= g_cMapADsTypeToDBType ||
|
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g_MapADsTypeToDBType[_pdbSearchCol[i].adsColumn.dwADsType].wType == DBTYPE_NULL) {
|
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_pdbSearchCol[i].dwStatus = DBSTATUS_E_CANTCONVERTVALUE;
|
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_pdbSearchCol[i].dwType = DBTYPE_EMPTY;
|
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_pdbSearchCol[i].dwLength = 0;
|
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}
|
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else {
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_pdbSearchCol[i].dwStatus = DBSTATUS_S_OK;
|
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_pdbSearchCol[i].dwType = g_MapADsTypeToDBType[_pdbSearchCol[i].adsColumn.dwADsType].wType;
|
|
|
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switch (_pdbSearchCol[i].dwType & ~DBTYPE_BYREF) {
|
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case DBTYPE_WSTR:
|
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_pdbSearchCol[i].dwLength =
|
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(wcslen( _pdbSearchCol[i].adsColumn.pADsValues[0].CaseIgnoreString)) *
|
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sizeof (WCHAR);
|
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break;
|
|
|
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case DBTYPE_BYTES:
|
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if(_pdbSearchCol[i].adsColumn.dwADsType == ADSTYPE_OCTET_STRING)
|
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_pdbSearchCol[i].dwLength =
|
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_pdbSearchCol[i].adsColumn.pADsValues[0].OctetString.dwLength;
|
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else if(_pdbSearchCol[i].adsColumn.dwADsType ==
|
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ADSTYPE_NT_SECURITY_DESCRIPTOR)
|
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_pdbSearchCol[i].dwLength =
|
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_pdbSearchCol[i].adsColumn.pADsValues[0].SecurityDescriptor.dwLength;
|
|
else if(_pdbSearchCol[i].adsColumn.dwADsType ==
|
|
ADSTYPE_PROV_SPECIFIC)
|
|
_pdbSearchCol[i].dwLength =
|
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_pdbSearchCol[i].adsColumn.pADsValues[0].ProviderSpecific.dwLength;
|
|
|
|
break;
|
|
|
|
default:
|
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_pdbSearchCol[i].dwLength = g_MapADsTypeToDBType[_pdbSearchCol[i].adsColumn.dwADsType].ulSize;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((FALSE == _fADSPathPresent))
|
|
{
|
|
hr = _pDSSearch->GetColumn(
|
|
_hSearchHandle,
|
|
L"AdsPath",
|
|
&(_pdbSearchCol[i].adsColumn)
|
|
);
|
|
if FAILED(hr)
|
|
goto error;
|
|
}
|
|
|
|
RRETURN(hr);
|
|
|
|
error:
|
|
RRETURN(hr);
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// Function: CRowProvider::GetColumn
|
|
//
|
|
// Synopsis: @mfunc Get a column value.
|
|
//
|
|
// We only provide a ptr to the value -- retained in our memory
|
|
// space.
|
|
//
|
|
// Called by: Client.
|
|
// Called when: After NextRow, once for each column.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
STDMETHODIMP
|
|
CRowProvider::GetColumn(
|
|
ULONG iCol,
|
|
DBSTATUS *pdbStatus,
|
|
ULONG *pdwLength,
|
|
BYTE *pbData
|
|
)
|
|
{
|
|
|
|
DBTYPE columnType = 0;
|
|
DBSTATUS dbStatus_temp = 0;
|
|
BOOL is_Ref = FALSE;
|
|
HRESULT hr = S_OK;
|
|
|
|
ADsAssert( 1 <= iCol && iCol <= _cColumns );
|
|
|
|
//
|
|
// Note that the caller gives us a ptr to where to put the data.
|
|
// We can fill in dwStatus, dwLength.
|
|
// For pbData, we assume this is a ptr to where we are to write our ptr.
|
|
//
|
|
columnType = _ColInfo[iCol].wType;
|
|
if ((columnType & DBTYPE_ARRAY) || (columnType & DBTYPE_VECTOR) ) {
|
|
if (pdbStatus != NULL)
|
|
*pdbStatus= DBSTATUS_E_UNAVAILABLE;
|
|
|
|
if (pdwLength != NULL)
|
|
*pdwLength = 0;
|
|
|
|
RRETURN(DB_S_ERRORSOCCURRED);
|
|
}
|
|
|
|
if (pdwLength!= NULL)
|
|
*pdwLength = _pdbSearchCol[iCol].dwLength;
|
|
|
|
dbStatus_temp = _pdbSearchCol[iCol].dwStatus;
|
|
|
|
if (columnType & DBTYPE_BYREF)
|
|
is_Ref = TRUE;
|
|
|
|
columnType &= (~DBTYPE_BYREF);
|
|
|
|
if (pbData != NULL && dbStatus_temp == DBSTATUS_S_OK) {
|
|
switch (columnType) {
|
|
case DBTYPE_BOOL:
|
|
* (VARIANT_BOOL*) pbData = _pdbSearchCol[iCol].adsColumn.pADsValues[0].Boolean ?
|
|
VARIANT_TRUE: VARIANT_FALSE;
|
|
break;
|
|
case DBTYPE_I4:
|
|
* (DWORD*) pbData = _pdbSearchCol[iCol].adsColumn.pADsValues[0].Integer;
|
|
break;
|
|
case DBTYPE_WSTR:
|
|
*(WCHAR**)pbData = _pdbSearchCol[iCol].adsColumn.pADsValues[0].CaseIgnoreString;
|
|
break;
|
|
case DBTYPE_BYTES:
|
|
if(_pdbSearchCol[iCol].adsColumn.dwADsType ==
|
|
ADSTYPE_OCTET_STRING)
|
|
*(BYTE**)pbData = _pdbSearchCol[iCol].adsColumn.pADsValues[0].OctetString.lpValue;
|
|
else if(_pdbSearchCol[iCol].adsColumn.dwADsType ==
|
|
ADSTYPE_NT_SECURITY_DESCRIPTOR)
|
|
*(BYTE**)pbData = _pdbSearchCol[iCol].adsColumn.pADsValues[0].SecurityDescriptor.lpValue;
|
|
|
|
else if(_pdbSearchCol[iCol].adsColumn.dwADsType ==
|
|
ADSTYPE_PROV_SPECIFIC)
|
|
*(BYTE**)pbData = _pdbSearchCol[iCol].adsColumn.pADsValues[0].ProviderSpecific.lpValue;
|
|
|
|
break;
|
|
case DBTYPE_DATE:
|
|
{
|
|
double date = 0;
|
|
hr = SystemTimeToVariantTime(
|
|
&_pdbSearchCol[iCol].adsColumn.pADsValues[0].UTCTime,
|
|
&date);
|
|
if( FAILED(hr) )
|
|
if (pdbStatus != NULL)
|
|
*pdbStatus= DBSTATUS_E_CANTCONVERTVALUE;
|
|
|
|
BAIL_ON_FAILURE(hr);
|
|
*(double*)pbData = date;
|
|
break;
|
|
}
|
|
case DBTYPE_VARIANT:
|
|
if (_pMultiValued[iCol] == FALSE) {
|
|
PVARIANT pVariant = (PVARIANT) AllocADsMem(sizeof(VARIANT));
|
|
if (!pVariant) {
|
|
if (pdbStatus != NULL)
|
|
*pdbStatus= DBSTATUS_E_CANTCONVERTVALUE;
|
|
hr = E_OUTOFMEMORY;
|
|
BAIL_ON_FAILURE(hr);
|
|
}
|
|
|
|
if(_pdbSearchCol[iCol].adsColumn.dwADsType ==
|
|
ADSTYPE_LARGE_INTEGER)
|
|
hr = PackLargeInteger(
|
|
&_pdbSearchCol[iCol].adsColumn.pADsValues[0].LargeInteger, pVariant);
|
|
else if(_pdbSearchCol[iCol].adsColumn.dwADsType ==
|
|
ADSTYPE_DN_WITH_BINARY)
|
|
hr = PackDNWithBinary(_pdbSearchCol[iCol].adsColumn.pADsValues[0].pDNWithBinary, pVariant);
|
|
|
|
else if(_pdbSearchCol[iCol].adsColumn.dwADsType ==
|
|
ADSTYPE_DN_WITH_STRING)
|
|
hr = PackDNWithString(_pdbSearchCol[iCol].adsColumn.pADsValues[0].pDNWithString, pVariant);
|
|
|
|
if( FAILED(hr) )
|
|
if (pdbStatus != NULL)
|
|
*pdbStatus= DBSTATUS_E_CANTCONVERTVALUE;
|
|
BAIL_ON_FAILURE(hr);
|
|
*((PVARIANT*)pbData) = pVariant;
|
|
}
|
|
else {
|
|
hr = CopyADs2VariantArray(
|
|
&_pdbSearchCol[iCol].adsColumn,
|
|
(PVARIANT *) pbData
|
|
);
|
|
if (hr == E_ADS_CANT_CONVERT_DATATYPE) {
|
|
dbStatus_temp= DBSTATUS_E_UNAVAILABLE;
|
|
break;
|
|
}
|
|
if( FAILED(hr) )
|
|
if (pdbStatus != NULL)
|
|
*pdbStatus= DBSTATUS_E_CANTCONVERTVALUE;
|
|
BAIL_ON_FAILURE(hr);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
dbStatus_temp= DBSTATUS_E_UNAVAILABLE;
|
|
break;
|
|
};
|
|
};
|
|
if (pdbStatus == 0)
|
|
RRETURN(S_OK);
|
|
|
|
if (pdbStatus != NULL)
|
|
|
|
*pdbStatus = dbStatus_temp;
|
|
|
|
if (dbStatus_temp == DBSTATUS_S_OK || dbStatus_temp == DBSTATUS_S_ISNULL)
|
|
RRETURN(S_OK);
|
|
else
|
|
RRETURN(DB_S_ERRORSOCCURRED);
|
|
|
|
error:
|
|
RRETURN(hr);
|
|
}
|
|
|
|
|
|
HRESULT CRowProvider::GetIndex(
|
|
IColumnsInfo* pColumnsInfo,
|
|
LPWSTR lpwszColName,
|
|
int& iIndex
|
|
)
|
|
{
|
|
#if (!defined(BUILD_FOR_NT40))
|
|
HRESULT hr = S_OK;
|
|
int iColumn;
|
|
DBCOLUMNINFO* pColumnInfo = NULL;
|
|
DBORDINAL cColumns = 0;
|
|
OLECHAR* pStringsBuffer = NULL;
|
|
|
|
iIndex = 0;
|
|
hr = pColumnsInfo->GetColumnInfo(&cColumns, &pColumnInfo, &pStringsBuffer);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
for(iColumn = 0; iColumn < cColumns; iColumn++)
|
|
{
|
|
if(pColumnInfo[iColumn].pwszName == NULL || lpwszColName == NULL)
|
|
continue;
|
|
|
|
if(!_wcsicmp(pColumnInfo[iColumn].pwszName, lpwszColName))
|
|
{
|
|
iIndex = iColumn;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (pColumnInfo)
|
|
_pMalloc->Free((void*)pColumnInfo);
|
|
if (pStringsBuffer)
|
|
_pMalloc->Free((void*)pStringsBuffer);
|
|
|
|
RRETURN(S_OK);
|
|
|
|
error:
|
|
if (pColumnInfo)
|
|
_pMalloc->Free((void*)pColumnInfo);
|
|
if (pStringsBuffer)
|
|
_pMalloc->Free((void*)pStringsBuffer);
|
|
RRETURN(hr);
|
|
#else
|
|
RRETURN(E_FAIL);
|
|
#endif
|
|
}
|
|
|
|
STDMETHODIMP CRowProvider::GetURLFromHROW(
|
|
HROW hRow,
|
|
LPOLESTR *ppwszURL,
|
|
IRowset* pRowset
|
|
)
|
|
{
|
|
#if (!defined(BUILD_FOR_NT40))
|
|
HRESULT hr = S_OK;
|
|
auto_rel<IAccessor> pAccessor;
|
|
auto_rel<IColumnsInfo> pColumnsInfo;
|
|
HACCESSOR hAccessor = NULL;
|
|
DBBINDING Bindings[1];
|
|
CComVariant varData;
|
|
|
|
if ((NULL == hRow) || (NULL == ppwszURL) || (NULL == pRowset))
|
|
RRETURN(E_INVALIDARG);
|
|
|
|
*ppwszURL = NULL;
|
|
|
|
// If adspath is in the list of columns selected
|
|
// return that value.
|
|
if (_fADSPathPresent)
|
|
{
|
|
VariantInit(&varData);
|
|
|
|
Bindings[0].dwPart = DBPART_VALUE;
|
|
Bindings[0].dwMemOwner = DBMEMOWNER_CLIENTOWNED;
|
|
Bindings[0].eParamIO = DBPARAMIO_NOTPARAM;
|
|
Bindings[0].wType = DBTYPE_VARIANT;
|
|
Bindings[0].pTypeInfo = NULL;
|
|
Bindings[0].obValue = 0;
|
|
Bindings[0].bPrecision = 0;
|
|
Bindings[0].bScale = 0;
|
|
Bindings[0].cbMaxLen = sizeof(VARIANT);
|
|
Bindings[0].pObject = NULL;
|
|
Bindings[0].pBindExt = NULL;
|
|
Bindings[0].dwFlags = 0;
|
|
|
|
hr = pRowset->QueryInterface(IID_IAccessor, (void**)&pAccessor);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
if (_iAdsPathIndex == 0)
|
|
{
|
|
hr = pRowset->QueryInterface(__uuidof(IColumnsInfo), (void **)&pColumnsInfo);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
hr = GetIndex(pColumnsInfo, L"AdsPath", _iAdsPathIndex);
|
|
if (0 == _iAdsPathIndex)
|
|
hr = E_UNEXPECTED;
|
|
|
|
BAIL_ON_FAILURE(hr);
|
|
}
|
|
|
|
Bindings[0].iOrdinal = _iAdsPathIndex;
|
|
Bindings[0].obValue = NULL;
|
|
|
|
hr = pAccessor->CreateAccessor(DBACCESSOR_ROWDATA,sizeof(Bindings)/sizeof(Bindings[0]) , Bindings, 0, &hAccessor, NULL);
|
|
BAIL_ON_FAILURE(hr);
|
|
hr = pRowset->GetData(hRow, hAccessor, &varData);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
ADsAssert(varData.vt == VT_BSTR);
|
|
ADsAssert(varData.bstrVal);
|
|
|
|
// allocate the string and copy data
|
|
*ppwszURL = (LPWSTR ) _pMalloc->Alloc(sizeof(WCHAR) * (wcslen(varData.bstrVal) + 1));
|
|
if (NULL == *ppwszURL)
|
|
{
|
|
hr = E_OUTOFMEMORY;
|
|
BAIL_ON_FAILURE(hr);
|
|
}
|
|
|
|
wcscpy(*ppwszURL, varData.bstrVal);
|
|
|
|
if (hAccessor)
|
|
pAccessor->ReleaseAccessor(hAccessor, NULL);
|
|
|
|
}
|
|
else
|
|
{
|
|
ADS_CASE_IGNORE_STRING padsPath;
|
|
|
|
hr = ((CRowset *)pRowset)->GetADsPathFromHROW(hRow, &padsPath);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
*ppwszURL = (LPWSTR ) _pMalloc->Alloc(sizeof(WCHAR) *
|
|
(wcslen(padsPath) +1));
|
|
if (NULL == *ppwszURL)
|
|
{
|
|
hr = E_OUTOFMEMORY;
|
|
BAIL_ON_FAILURE(hr);
|
|
}
|
|
wcscpy(*ppwszURL, padsPath);
|
|
|
|
}
|
|
|
|
RRETURN(S_OK);
|
|
|
|
error:
|
|
if (hAccessor)
|
|
pAccessor->ReleaseAccessor(hAccessor, NULL);
|
|
RRETURN(hr);
|
|
#else
|
|
RRETURN(E_FAIL);
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: CRowProvider::GetColumnInfo
|
|
//
|
|
// Synopsis: @mfunc Get Column Info.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
STDMETHODIMP
|
|
CRowProvider::GetColumnInfo(
|
|
DBORDINAL * pcColumns,
|
|
DBCOLUMNINFO ** pprgInfo,
|
|
WCHAR ** ppStringsBuffer
|
|
)
|
|
{
|
|
DBORDINAL i;
|
|
ULONG cChars, cCharDispl;
|
|
HRESULT hr = S_OK;
|
|
DBCOLUMNINFO * prgInfo = NULL;
|
|
WCHAR * pStrBuffer = NULL;
|
|
|
|
//
|
|
// Asserts
|
|
//
|
|
ADsAssert(_pMalloc);
|
|
ADsAssert(_cColumns);
|
|
ADsAssert(_ColInfo);
|
|
ADsAssert(_pwchBuf);
|
|
|
|
if( pcColumns )
|
|
*pcColumns = 0;
|
|
|
|
if( pprgInfo )
|
|
*pprgInfo = NULL;
|
|
|
|
if( ppStringsBuffer )
|
|
*ppStringsBuffer = NULL;
|
|
|
|
if( (pcColumns == NULL) || (pprgInfo == NULL) || (ppStringsBuffer == NULL) )
|
|
BAIL_ON_FAILURE( hr=E_INVALIDARG );
|
|
|
|
prgInfo = (DBCOLUMNINFO*)_pMalloc->Alloc((ULONG)(_cColumns * sizeof(DBCOLUMNINFO)));
|
|
if( prgInfo == NULL )
|
|
BAIL_ON_FAILURE( hr=E_OUTOFMEMORY );
|
|
|
|
memcpy(prgInfo, _ColInfo, (size_t)(_cColumns * sizeof(DBCOLUMNINFO)));
|
|
|
|
cChars = _pMalloc->GetSize(_pwchBuf);
|
|
pStrBuffer = (WCHAR*)_pMalloc->Alloc(cChars);
|
|
if( pStrBuffer == NULL )
|
|
BAIL_ON_FAILURE( hr=E_OUTOFMEMORY );
|
|
|
|
memcpy(pStrBuffer, (void*)_pwchBuf , cChars);
|
|
|
|
for (i=1; i<_cColumns; i++) {
|
|
cCharDispl = (ULONG)(_ColInfo[i].pwszName - _pwchBuf);
|
|
prgInfo[i].pwszName = pStrBuffer + cCharDispl;
|
|
prgInfo[i].columnid.uName.pwszName = pStrBuffer + cCharDispl;
|
|
};
|
|
|
|
*pcColumns = _cColumns;
|
|
*pprgInfo = prgInfo;
|
|
*ppStringsBuffer = pStrBuffer;
|
|
|
|
RRETURN( S_OK );
|
|
|
|
error:
|
|
|
|
if( !prgInfo )
|
|
_pMalloc->Free(prgInfo);
|
|
|
|
if( pStrBuffer != NULL )
|
|
_pMalloc->Free(pStrBuffer);
|
|
|
|
RRETURN( hr );
|
|
};
|
|
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: CRowProvider::MapColumnIDs
|
|
//
|
|
// Synopsis: @mfunc Map Column IDs.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
STDMETHODIMP
|
|
CRowProvider::MapColumnIDs(
|
|
DBORDINAL cColumnIDs,
|
|
const DBID rgColumnIDs[],
|
|
DBORDINAL rgColumns[]
|
|
)
|
|
{
|
|
ULONG found = 0;
|
|
DBORDINAL i;
|
|
|
|
DBORDINAL cValidCols = 0;
|
|
//
|
|
// No Column IDs are set when GetColumnInfo returns ColumnsInfo structure.
|
|
// Hence, any value of ID will not match with any column
|
|
//
|
|
DBORDINAL iCol;
|
|
|
|
//
|
|
// No-Op if cColumnIDs is 0
|
|
//
|
|
if( cColumnIDs == 0 )
|
|
RRETURN( S_OK );
|
|
|
|
// Spec-defined checks.
|
|
// Note that this guarantees we can access rgColumnIDs[] in loop below.
|
|
// (Because we'll just fall through.)
|
|
if( cColumnIDs && (!rgColumnIDs || !rgColumns) )
|
|
RRETURN( E_INVALIDARG );
|
|
|
|
//
|
|
// Set the columns ordinals to invalid values
|
|
//
|
|
for (iCol=0; iCol < cColumnIDs; iCol++) {
|
|
// Initialize
|
|
rgColumns[iCol] = DB_INVALIDCOLUMN;
|
|
|
|
//
|
|
// The columnid with the Bookmark or the same name
|
|
//
|
|
if( rgColumnIDs[iCol].eKind == DBKIND_GUID_PROPID &&
|
|
rgColumnIDs[iCol].uGuid.guid == DBCOL_SPECIALCOL &&
|
|
rgColumnIDs[iCol].uName.ulPropid == 2 ) {
|
|
rgColumns[iCol] = 0;
|
|
cValidCols++;
|
|
continue;
|
|
}
|
|
|
|
//
|
|
// The columnid with the Column Name
|
|
//
|
|
if( rgColumnIDs[iCol].eKind == DBKIND_NAME &&
|
|
rgColumnIDs[iCol].uName.pwszName ) {
|
|
//
|
|
// Find the name in the list of Attributes
|
|
//
|
|
for (ULONG iOrdinal=0; iOrdinal < _cColumns; iOrdinal++) {
|
|
if( _ColInfo[iOrdinal].columnid.eKind == DBKIND_NAME &&
|
|
!_wcsicmp(_ColInfo[iOrdinal].columnid.uName.pwszName,
|
|
rgColumnIDs[iCol].uName.pwszName) ) {
|
|
rgColumns[iCol] = iOrdinal;
|
|
cValidCols++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if( cValidCols == 0 )
|
|
RRETURN( DB_E_ERRORSOCCURRED );
|
|
else if( cValidCols < cColumnIDs )
|
|
RRETURN( DB_S_ERRORSOCCURRED );
|
|
else
|
|
RRETURN( S_OK );
|
|
}
|
|
|
|
|
|
STDMETHODIMP
|
|
CRowProvider::CopyADs2VariantArray(
|
|
PADS_SEARCH_COLUMN pADsColumn,
|
|
PVARIANT *ppVariant
|
|
)
|
|
{
|
|
SAFEARRAY *aList = NULL;
|
|
SAFEARRAYBOUND aBound;
|
|
VARTYPE vType = VT_NULL;
|
|
HRESULT hr = S_OK;
|
|
ULONG i;
|
|
PVARIANT pVariant = NULL, pVarArray = NULL;
|
|
BOOL fSafeArrayLocked = FALSE;
|
|
|
|
|
|
ADsAssert(ppVariant);
|
|
*ppVariant = NULL;
|
|
|
|
aBound.lLbound = 0;
|
|
aBound.cElements = pADsColumn->dwNumValues;
|
|
|
|
pVariant = (PVARIANT) AllocADsMem(sizeof(VARIANT));
|
|
if (!pVariant) {
|
|
RRETURN(E_OUTOFMEMORY);
|
|
}
|
|
|
|
if ((ULONG) pADsColumn->dwADsType >= g_cMapADsTypeToVarType ||
|
|
(vType = g_MapADsTypeToVarType[pADsColumn->dwADsType]) == VT_NULL) {
|
|
|
|
BAIL_ON_FAILURE(hr = E_ADS_CANT_CONVERT_DATATYPE);
|
|
}
|
|
|
|
aList = SafeArrayCreate( VT_VARIANT, 1, &aBound );
|
|
if (aList == NULL)
|
|
BAIL_ON_FAILURE(hr = E_OUTOFMEMORY);
|
|
|
|
hr = SafeArrayAccessData( aList, (void **) &pVarArray );
|
|
if (FAILED(hr)) {
|
|
SafeArrayDestroy( aList );
|
|
goto error;
|
|
}
|
|
|
|
fSafeArrayLocked = TRUE;
|
|
|
|
for (i=0; i<aBound.cElements; i++) {
|
|
|
|
(V_VT(pVarArray+i)) = vType;
|
|
|
|
switch (vType) {
|
|
case VT_I4:
|
|
V_I4(pVarArray+i) = pADsColumn->pADsValues[i].Integer;
|
|
break;
|
|
|
|
case VT_DISPATCH:
|
|
if(pADsColumn->dwADsType == ADSTYPE_LARGE_INTEGER)
|
|
hr = PackLargeInteger(&pADsColumn->pADsValues[i].LargeInteger,
|
|
pVarArray+i);
|
|
else if(pADsColumn->dwADsType == ADSTYPE_DN_WITH_BINARY)
|
|
hr = PackDNWithBinary(pADsColumn->pADsValues[i].pDNWithBinary,
|
|
pVarArray+i);
|
|
else if(pADsColumn->dwADsType == ADSTYPE_DN_WITH_STRING)
|
|
hr = PackDNWithString(pADsColumn->pADsValues[i].pDNWithString,
|
|
pVarArray+i);
|
|
|
|
BAIL_ON_FAILURE(hr);
|
|
break;
|
|
|
|
case VT_BOOL:
|
|
V_I4(pVarArray+i) = pADsColumn->pADsValues[i].Boolean ?
|
|
VARIANT_TRUE: VARIANT_FALSE;
|
|
break;
|
|
|
|
case VT_BSTR:
|
|
hr = ADsAllocString (
|
|
pADsColumn->pADsValues[i].CaseIgnoreString,
|
|
&(V_BSTR(pVarArray+i))
|
|
);
|
|
BAIL_ON_FAILURE(hr);
|
|
break;
|
|
|
|
case VT_DATE:
|
|
{
|
|
double date = 0;
|
|
hr = SystemTimeToVariantTime(
|
|
&pADsColumn->pADsValues[i].UTCTime,
|
|
&date);
|
|
BAIL_ON_FAILURE(hr);
|
|
V_DATE(pVarArray+i)= date;
|
|
break;
|
|
}
|
|
|
|
case (VT_UI1 | VT_ARRAY):
|
|
VariantInit(pVarArray+i);
|
|
|
|
if(pADsColumn->dwADsType == ADSTYPE_OCTET_STRING)
|
|
hr = BinaryToVariant(
|
|
pADsColumn->pADsValues[i].OctetString.dwLength,
|
|
pADsColumn->pADsValues[i].OctetString.lpValue,
|
|
pVarArray+i);
|
|
else if(pADsColumn->dwADsType == ADSTYPE_NT_SECURITY_DESCRIPTOR)
|
|
hr = BinaryToVariant(
|
|
pADsColumn->pADsValues[i].SecurityDescriptor.dwLength,
|
|
pADsColumn->pADsValues[i].SecurityDescriptor.lpValue,
|
|
pVarArray+i);
|
|
else if(pADsColumn->dwADsType == ADSTYPE_PROV_SPECIFIC)
|
|
hr = BinaryToVariant(
|
|
pADsColumn->pADsValues[i].ProviderSpecific.dwLength,
|
|
pADsColumn->pADsValues[i].ProviderSpecific.lpValue,
|
|
pVarArray+i);
|
|
|
|
BAIL_ON_FAILURE(hr);
|
|
break;
|
|
|
|
default:
|
|
BAIL_ON_FAILURE(hr = E_ADS_CANT_CONVERT_DATATYPE);
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
fSafeArrayLocked = FALSE;
|
|
SafeArrayUnaccessData( aList );
|
|
|
|
V_VT((PVARIANT)pVariant) = VT_ARRAY | VT_VARIANT;
|
|
V_ARRAY((PVARIANT)pVariant) = aList;
|
|
|
|
*ppVariant = pVariant;
|
|
|
|
RRETURN(S_OK);
|
|
|
|
error:
|
|
|
|
if (fSafeArrayLocked && (NULL != aList))
|
|
{
|
|
SafeArrayUnaccessData( aList );
|
|
SafeArrayDestroy( aList );
|
|
}
|
|
|
|
|
|
if (pVariant) {
|
|
FreeADsMem(pVariant);
|
|
}
|
|
RRETURN(hr);
|
|
|
|
|
|
}
|
|
|
|
|
|
HRESULT
|
|
PackLargeInteger(
|
|
LARGE_INTEGER *plargeint,
|
|
PVARIANT pVarDestObject
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
IADsLargeInteger * pLargeInteger = NULL;
|
|
IDispatch * pDispatch = NULL;
|
|
|
|
hr = CoCreateInstance(
|
|
CLSID_LargeInteger,
|
|
NULL,
|
|
CLSCTX_INPROC_SERVER,
|
|
IID_IADsLargeInteger,
|
|
(void **) &pLargeInteger);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
hr = pLargeInteger->put_LowPart(plargeint->LowPart);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
hr = pLargeInteger->put_HighPart(plargeint->HighPart);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
hr = pLargeInteger->QueryInterface(
|
|
IID_IDispatch,
|
|
(void **) &pDispatch
|
|
);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
V_VT(pVarDestObject) = VT_DISPATCH;
|
|
V_DISPATCH(pVarDestObject) = pDispatch;
|
|
|
|
error:
|
|
|
|
if (pLargeInteger) {
|
|
pLargeInteger->Release();
|
|
}
|
|
RRETURN(hr);
|
|
}
|
|
|
|
HRESULT
|
|
PackDNWithBinary(
|
|
PADS_DN_WITH_BINARY pDNWithBinary,
|
|
PVARIANT pVarDestObject
|
|
)
|
|
{
|
|
HRESULT hr;
|
|
IADsDNWithBinary *pIADsDNWithBinary = NULL;
|
|
BSTR bstrTemp = NULL;
|
|
SAFEARRAYBOUND aBound;
|
|
SAFEARRAY *aList = NULL;
|
|
CHAR HUGEP *pArray = NULL;
|
|
IDispatch *pIDispatch = NULL;
|
|
|
|
if( (NULL == pDNWithBinary) || (NULL == pVarDestObject) )
|
|
BAIL_ON_FAILURE(hr = E_INVALIDARG);
|
|
|
|
hr = CoCreateInstance(
|
|
CLSID_DNWithBinary,
|
|
NULL,
|
|
CLSCTX_INPROC_SERVER,
|
|
IID_IADsDNWithBinary,
|
|
(void **) &pIADsDNWithBinary
|
|
);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
if (pDNWithBinary->pszDNString) {
|
|
hr = ADsAllocString(pDNWithBinary->pszDNString, &bstrTemp);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
//
|
|
// Put the value in the object - we can only set BSTR's
|
|
//
|
|
hr = pIADsDNWithBinary->put_DNString(bstrTemp);
|
|
BAIL_ON_FAILURE(hr);
|
|
}
|
|
|
|
aBound.lLbound = 0;
|
|
aBound.cElements = pDNWithBinary->dwLength;
|
|
|
|
aList = SafeArrayCreate( VT_UI1, 1, &aBound );
|
|
|
|
if ( aList == NULL )
|
|
{
|
|
hr = E_OUTOFMEMORY;
|
|
BAIL_ON_FAILURE(hr);
|
|
}
|
|
|
|
hr = SafeArrayAccessData( aList, (void HUGEP * FAR *) &pArray );
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
memcpy( pArray, pDNWithBinary->lpBinaryValue, aBound.cElements );
|
|
|
|
SafeArrayUnaccessData( aList );
|
|
|
|
V_VT(pVarDestObject) = VT_ARRAY | VT_UI1;
|
|
V_ARRAY(pVarDestObject) = aList;
|
|
|
|
hr = pIADsDNWithBinary->put_BinaryValue(*pVarDestObject);
|
|
VariantClear(pVarDestObject);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
hr = pIADsDNWithBinary->QueryInterface(
|
|
IID_IDispatch,
|
|
(void **) &pIDispatch
|
|
);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
V_VT(pVarDestObject) = VT_DISPATCH;
|
|
V_DISPATCH(pVarDestObject) = pIDispatch;
|
|
|
|
error:
|
|
if(pIADsDNWithBinary)
|
|
pIADsDNWithBinary->Release();
|
|
|
|
if (bstrTemp)
|
|
ADsFreeString(bstrTemp);
|
|
|
|
RRETURN(hr);
|
|
}
|
|
|
|
HRESULT
|
|
PackDNWithString(
|
|
PADS_DN_WITH_STRING pDNWithString,
|
|
PVARIANT pVarDestObject
|
|
)
|
|
{
|
|
HRESULT hr;
|
|
IADsDNWithString *pIADsDNWithString = NULL;
|
|
BSTR bstrDNVal = NULL;
|
|
BSTR bstrStrVal = NULL;
|
|
IDispatch *pIDispatch;
|
|
|
|
if( (NULL == pDNWithString) || (NULL == pVarDestObject) )
|
|
BAIL_ON_FAILURE(hr = E_INVALIDARG);
|
|
|
|
hr = CoCreateInstance(
|
|
CLSID_DNWithString,
|
|
NULL,
|
|
CLSCTX_INPROC_SERVER,
|
|
IID_IADsDNWithString,
|
|
(void **) &pIADsDNWithString
|
|
);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
if (pDNWithString->pszDNString) {
|
|
hr = ADsAllocString(pDNWithString->pszDNString, &bstrDNVal);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
hr = pIADsDNWithString->put_DNString(bstrDNVal);
|
|
BAIL_ON_FAILURE(hr);
|
|
}
|
|
|
|
if (pDNWithString->pszStringValue) {
|
|
hr = ADsAllocString(
|
|
pDNWithString->pszStringValue,
|
|
&bstrStrVal
|
|
);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
hr = pIADsDNWithString->put_StringValue(bstrStrVal);
|
|
|
|
BAIL_ON_FAILURE(hr);
|
|
}
|
|
|
|
hr = pIADsDNWithString->QueryInterface(
|
|
IID_IDispatch,
|
|
(void **) &pIDispatch
|
|
);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
V_VT(pVarDestObject) = VT_DISPATCH;
|
|
V_DISPATCH(pVarDestObject) = pIDispatch;
|
|
|
|
error:
|
|
|
|
if(pIADsDNWithString)
|
|
pIADsDNWithString->Release();
|
|
|
|
if (bstrDNVal) {
|
|
ADsFreeString(bstrDNVal);
|
|
}
|
|
|
|
if (bstrStrVal) {
|
|
ADsFreeString(bstrStrVal);
|
|
}
|
|
|
|
RRETURN(hr);
|
|
}
|
|
|
|
HRESULT
|
|
CRowProvider::SeekToNextRow(void)
|
|
{
|
|
HRESULT hr;
|
|
DWORD dwExtError = ERROR_SUCCESS;
|
|
const int ERROR_BUF_SIZE = 512;
|
|
const int NAME_BUF_SIZE = 128;
|
|
WCHAR ErrorBuf[ERROR_BUF_SIZE];
|
|
WCHAR NameBuf[NAME_BUF_SIZE];
|
|
|
|
do {
|
|
// Clear the ADSI extended error, so that after the call to GetNextRow,
|
|
// we can safely check if an extended error was set.
|
|
ADsSetLastError(ERROR_SUCCESS, NULL, NULL);
|
|
dwExtError = ERROR_SUCCESS;
|
|
|
|
//
|
|
// read the next row
|
|
//
|
|
hr = _pDSSearch->GetNextRow(
|
|
_hSearchHandle
|
|
);
|
|
|
|
// we should treat SIZE_LIMIT_EXCEEDED error message as
|
|
// S_ADS_NOMORE_ROWS
|
|
// in the future, we might want to return this error message
|
|
// to the user under non-paged search situation
|
|
if (LIMIT_EXCEEDED_ERROR(hr))
|
|
hr = S_ADS_NOMORE_ROWS;
|
|
|
|
BAIL_ON_FAILURE( hr );
|
|
|
|
if (hr == S_ADS_NOMORE_ROWS)
|
|
{
|
|
// check if more results are likely (pagedTimeLimit search). If so,
|
|
// we will keep trying till a row is obtained.
|
|
hr = ADsGetLastError(&dwExtError, ErrorBuf, ERROR_BUF_SIZE,
|
|
NameBuf, NAME_BUF_SIZE);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
if (dwExtError != ERROR_MORE_DATA)
|
|
// we really have no more data
|
|
RRETURN(S_ADS_NOMORE_ROWS);
|
|
}
|
|
} while(ERROR_MORE_DATA == dwExtError);
|
|
|
|
error:
|
|
RRETURN(hr);
|
|
}
|
|
|
|
HRESULT
|
|
CRowProvider::SeekToPreviousRow(void)
|
|
{
|
|
RRETURN( _pDSSearch->GetPreviousRow(_hSearchHandle) );
|
|
}
|