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// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include "UT_STD.H"
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// Class HDbColumnMap
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class HDbColumnMap
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{
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public:
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static HDbColumnMap* NewL(const RSqlColumnList& aSelect,const HDbColumnSet& aColumns);
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inline const TDbColNo& operator[](TDbColNo aCol) const
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{__ASSERT(aCol>0&&aCol<=iCount);return iMap[aCol-1];}
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inline TInt Count() const
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{return iCount;}
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private:
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TInt iCount;
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TDbColNo iMap[1]; // at least one
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};
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HDbColumnMap* HDbColumnMap::NewL(const RSqlColumnList& aSelect,const HDbColumnSet& aColumns)
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{
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TInt count=aSelect.Count();
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HDbColumnMap* self=(HDbColumnMap*)User::AllocLC(_FOFF(HDbColumnMap,iMap[count]));
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self->iCount=count;
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TDbColNo* pCol=&self->iMap[0];
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for (TInt ii=0;ii<count;++ii)
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{
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TDbColNo col=aColumns.ColNoL(aSelect[ii]);
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if (col==KDbNullColNo)
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__LEAVE(KErrNotFound);
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*pCol++=col;
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}
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CleanupStack::Pop();
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return self;
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}
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// Class CDbProjectStage
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CDbProjectStage::CDbProjectStage()
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{}
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CDbProjectStage::~CDbProjectStage()
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{
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delete iMap;
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}
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void CDbProjectStage::ConstructL(const RSqlColumnList& aSelect,const HDbColumnSet& aColumns)
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//
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// Build the column map and allocate a row buffer
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//
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{
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iMap=HDbColumnMap::NewL(aSelect,aColumns);
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}
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RDbRow* CDbProjectStage::RowBuffer()
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//
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// whole-row access cannot be done through a projection
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//
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{
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return 0;
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}
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TDbColumn CDbProjectStage::Column(TDbColNo aColNo)
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{
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return CDbDataStage::Column((*iMap)[aColNo]);
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}
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TInt CDbProjectStage::ColumnCount() const
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{
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return iMap->Count();
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}
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const TDbColumnDef& CDbProjectStage::ColumnDef(TDbColNo aCol) const
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{
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return CDbDataStage::ColumnDef((*iMap)[aCol]);
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}
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