1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/persistentdata/persistentstorage/dbms/usql/UQ_NULL.CPP	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,34 @@
     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 +// SQL NULL-predicate node class
    1.18 +// 
    1.19 +//
    1.20 +
    1.21 +#include "UQ_STD.H"
    1.22 +
    1.23 +// class CSqlNullPredicate
    1.24 +
    1.25 +CSqlNullPredicate::CSqlNullPredicate(TType aType,const TDesC& aColumn)
    1.26 +	: CSqlBoundNode(aType,aColumn)
    1.27 +	{
    1.28 +	__ASSERT(aType==EIsNull||aType==EIsNotNull);
    1.29 +	}
    1.30 +
    1.31 +TBool CSqlNullPredicate::EvaluateL(const TTextOps&) const
    1.32 +	{
    1.33 +	__ASSERT(IsBound());
    1.34 +	TBool null=Column().IsNull();
    1.35 +	return NodeType()==EIsNull ? null : !null;
    1.36 +	}
    1.37 +