--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/persistentstorage/dbms/usql/UQ_NULL.CPP	Fri Jan 22 11:06:30 2010 +0200
@@ -0,0 +1,34 @@
+// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// SQL NULL-predicate node class
+// 
+//
+
+#include "UQ_STD.H"
+
+// class CSqlNullPredicate
+
+CSqlNullPredicate::CSqlNullPredicate(TType aType,const TDesC& aColumn)
+	: CSqlBoundNode(aType,aColumn)
+	{
+	__ASSERT(aType==EIsNull||aType==EIsNotNull);
+	}
+
+TBool CSqlNullPredicate::EvaluateL(const TTextOps&) const
+	{
+	__ASSERT(IsBound());
+	TBool null=Column().IsNull();
+	return NodeType()==EIsNull ? null : !null;
+	}
+