1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/persistentdata/persistentstorage/dbms/pcdbms/utable/UT_PRJCT.CPP	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,89 @@
     1.4 +// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +
    1.19 +#include "UT_STD.H"
    1.20 +
    1.21 +// Class HDbColumnMap
    1.22 +
    1.23 +class HDbColumnMap
    1.24 +	{
    1.25 +public:
    1.26 +	static HDbColumnMap* NewL(const RSqlColumnList& aSelect,const HDbColumnSet& aColumns);
    1.27 +	inline const TDbColNo& operator[](TDbColNo aCol) const
    1.28 +		{__ASSERT(aCol>0&&aCol<=iCount);return iMap[aCol-1];}
    1.29 +	inline TInt Count() const
    1.30 +		{return iCount;}
    1.31 +private:
    1.32 +	TInt iCount;
    1.33 +	TDbColNo iMap[1];	// at least one
    1.34 +	};
    1.35 +
    1.36 +HDbColumnMap* HDbColumnMap::NewL(const RSqlColumnList& aSelect,const HDbColumnSet& aColumns)
    1.37 +	{
    1.38 +	TInt count=aSelect.Count();
    1.39 +	HDbColumnMap* self=(HDbColumnMap*)User::AllocLC(_FOFF(HDbColumnMap,iMap[count]));
    1.40 +	self->iCount=count;
    1.41 +	TDbColNo* pCol=&self->iMap[0];
    1.42 +	for (TInt ii=0;ii<count;++ii)
    1.43 +		{
    1.44 +		TDbColNo col=aColumns.ColNoL(aSelect[ii]);
    1.45 +		if (col==KDbNullColNo)
    1.46 +			__LEAVE(KErrNotFound);
    1.47 +		*pCol++=col;
    1.48 +		}
    1.49 +	CleanupStack::Pop();
    1.50 +	return self;
    1.51 +	}
    1.52 +
    1.53 +// Class CDbProjectStage
    1.54 +
    1.55 +CDbProjectStage::CDbProjectStage()
    1.56 +	{}
    1.57 +
    1.58 +CDbProjectStage::~CDbProjectStage()
    1.59 +	{
    1.60 +	delete iMap;
    1.61 +	}
    1.62 +
    1.63 +void CDbProjectStage::ConstructL(const RSqlColumnList& aSelect,const HDbColumnSet& aColumns)
    1.64 +//
    1.65 +// Build the column map and allocate a row buffer
    1.66 +//
    1.67 +	{
    1.68 +	iMap=HDbColumnMap::NewL(aSelect,aColumns);
    1.69 +	}
    1.70 +
    1.71 +RDbRow* CDbProjectStage::RowBuffer()
    1.72 +//
    1.73 +// whole-row access cannot be done through a projection
    1.74 +//
    1.75 +	{
    1.76 +	return 0;
    1.77 +	}
    1.78 +
    1.79 +TDbColumn CDbProjectStage::Column(TDbColNo aColNo)
    1.80 +	{
    1.81 +	return CDbDataStage::Column((*iMap)[aColNo]);
    1.82 +	}
    1.83 +
    1.84 +TInt CDbProjectStage::ColumnCount() const
    1.85 +	{
    1.86 +	return iMap->Count();
    1.87 +	}
    1.88 +
    1.89 +const TDbColumnDef& CDbProjectStage::ColumnDef(TDbColNo aCol) const
    1.90 +	{
    1.91 +	return CDbDataStage::ColumnDef((*iMap)[aCol]);
    1.92 +	}