123 lines
3.8 KiB
C++
123 lines
3.8 KiB
C++
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////////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// Microsoft WMIOLE DB Provider
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// (C) Copyright 1999 Microsoft Corporation. All Rights Reserved.
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//
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// IAlterTable.cpp - IAlterTable interface implementation
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#include "headers.h"
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#include "dbsess.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// Modifies properties of columns
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// In WMI terms modifies properties of a class
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//
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// Returns one of the following values:
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// S_OK Altering the column succeeded
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// E_FAIL AlterColumn failed due to a WMI error
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// DB_E_BADTABLEID The TableID passed is invalid or bad
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// DB_E_NOCOLUMN The ColumnID passed is invalid or bad
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// E_INVALIDARG One of more arguments passed in not valid
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// DB_E_NOTSUPPORTED The requested type of modification of column
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// not supported
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////////////////////////////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP CImplIAlterTable::AlterColumn(DBID * pTableID,
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DBID * pColumnID,
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DBCOLUMNDESCFLAGS ColumnDescFlags,
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DBCOLUMNDESC * pColumnDesc)
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{
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HRESULT hr = E_FAIL;
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WCHAR *pwcsTableName = NULL;
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//===================================================================
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// Initialize incoming parameters
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//===================================================================
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CSetStructuredExceptionHandler seh;
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TRY_BLOCK;
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// Seriliaze the object
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CAutoBlock cab(m_pObj->GetCriticalSection());
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// Clear ErrorInfo
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g_pCError->ClearErrorInfo();
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if(wcslen(pTableID->uName.pwszName) == 0 || pTableID->eKind != DBKIND_NAME)
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{
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hr = DB_E_BADTABLEID;
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}
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else
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if(wcslen(pColumnID->uName.pwszName) == 0 || pColumnID->eKind != DBKIND_NAME)
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{
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hr = DB_E_NOCOLUMN;
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}
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else
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if( pColumnDesc == NULL)
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{
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hr = E_INVALIDARG;
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}
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else
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if( pColumnDesc->dbcid.uName.pwszName == NULL)
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{
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hr = E_INVALIDARG;
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}
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else
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//===================================================================================
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// Check the connection is valid & the alteration flags is supported or not
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//===================================================================================
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if(S_OK == (hr =CheckIfSupported(ColumnDescFlags)) &&
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m_pObj->m_pCDataSource->m_pWbemWrap->ValidConnection() )
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{
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CWmiOleDBMap Map;
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if(SUCCEEDED(hr =Map.FInit(NO_QUALIFIERS,(LPWSTR)pTableID->uName.pwszName,m_pObj->m_pCDataSource->m_pWbemWrap)))
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{
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hr = Map.SetColumnProperties(pColumnDesc);
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}
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}
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hr = hr == S_OK ? hr :g_pCError->PostHResult(hr,&IID_IAlterTable);
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CATCH_BLOCK_HRESULT(hr,L"IAlterTable::AlterColumn");
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return hr;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// Modifies some of the attributes of the class
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//
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// Returns one of the following values:
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// DB_E_NOTSUPPORTED Altering the properties of table not supported
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////////////////////////////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP CImplIAlterTable::AlterTable(DBID * pTableID,
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DBID * pNewTableID,
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ULONG cPropertySets,
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DBPROPSET rgPropertySet[])
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{
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HRESULT hr = DB_E_NOTSUPPORTED;
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CSetStructuredExceptionHandler seh;
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TRY_BLOCK;
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// Clear ErrorInfo
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g_pCError->ClearErrorInfo();
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hr = hr == S_OK ? hr :g_pCError->PostHResult(hr,&IID_IAlterTable);
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// return not supported as no TABLE Properties are supported
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CATCH_BLOCK_HRESULT(hr,L"IAlterTable::AlterTable");
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return hr;
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}
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HRESULT CImplIAlterTable::CheckIfSupported(DBCOLUMNDESCFLAGS ColumnDescFlags)
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{
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if(ColumnDescFlags == DBCOLUMNDESCFLAGS_PROPERTIES)
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return S_OK;
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else
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return DB_E_NOTSUPPORTED;
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}
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