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