--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/persistentstorage/dbms/usql/UQ_COMP.CPP	Fri Jan 22 11:06:30 2010 +0200
@@ -0,0 +1,125 @@
+// 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 Comparison predicate node class
+// 
+//
+
+#include "UQ_STD.H"
+#include "D32COMP.H"
+
+// class CSqlCompPredicate
+
+CSqlCompPredicate::CSqlCompPredicate(TType aType,const TDesC& aColumn,const RSqlLiteral& aLiteral)
+	: CSqlLiteralNode(aType,aColumn,aLiteral)
+	{
+	__ASSERT(aType==ELess||aType==ELessEqual||aType==EEqual||aType==EGreaterEqual||aType==EGreater||aType==ENotEqual);
+	}
+
+TInt CSqlCompPredicate::CompareLongText8L(const TDbBlob& aBlob,const TTextOps& aTextOp) const
+	{
+	TInt r=Comp::Compare8L(StreamLC(aBlob),aBlob.Size(),Value().Text8(),aTextOp);
+	CleanupStack::PopAndDestroy();
+	return r;
+	}
+
+TInt CSqlCompPredicate::CompareLongText16L(const TDbBlob& aBlob,const TTextOps& aTextOp) const
+	{
+	TInt r=Comp::Compare16L(StreamLC(aBlob),aBlob.Size(),Value().Text16(),aTextOp);
+	CleanupStack::PopAndDestroy();
+	return r;
+	}
+
+TBool CSqlCompPredicate::EvaluateL(const TTextOps& aTextOp) const
+//
+// Evaluate a comparison between the columns and the data
+// NULL numeric data always compares false
+//
+	{
+	TDbColumnC col=Column();
+	TDbColType t=ColType();
+	if (t<=EDbColDateTime && col.IsNull())
+		return EFalse;	// NULL always compares false for non-text columns
+	TInt r;
+	switch (t)
+		{
+	default:
+		__ASSERT(0);
+	case EDbColBit:
+	case EDbColUint8:
+	case EDbColUint16:
+	case EDbColUint32:
+		r=Comp::Compare(TInt64(TUint(col.Uint32())),Value().Int64());
+		break;
+	case EDbColInt8:
+	case EDbColInt16:
+	case EDbColInt32:
+		r=Comp::Compare(TInt64(TInt(col.Int32())),Value().Int64());
+		break;
+	case EDbColInt64:
+		r=Comp::Compare(col.Int64(),Value().Int64());
+		break;
+	case EDbColReal32:
+		r=Comp::Compare(TReal(col.Real32()),Value().Real64());
+		break;
+	case EDbColReal64:
+		r=Comp::Compare(col.Real64(),Value().Real64());
+		break;
+	case EDbColDateTime:
+		r=Comp::Compare(col.Time(),Value().Time());
+		break;
+	case EDbColText8:
+		r=aTextOp.Compare(col.PtrC8(),Value().Text8());
+		break;
+	case EDbColText16:
+		r=aTextOp.Compare(col.PtrC16(),Value().Text16());
+		break;
+	case EDbColLongText8:
+		{
+		const TDbBlob& blob=col.Blob();
+		if (blob.IsInline())
+			r=aTextOp.Compare(blob.PtrC8(),Value().Text8());
+		else
+			r=CompareLongText8L(blob,aTextOp);
+		}
+		break;
+	case EDbColLongText16:
+		{
+		const TDbBlob& blob=col.Blob();
+		if (blob.IsInline())
+			r=aTextOp.Compare(blob.PtrC16(),Value().Text16());
+		else
+			r=CompareLongText16L(blob,aTextOp);
+		}
+		break;
+		}
+	switch (NodeType())
+		{
+	default:
+		__ASSERT(0);
+	case EGreater:
+		r=-r;
+		// drop throught to ELess
+	case ELess:
+		return r<0;
+	case EGreaterEqual:
+		r=-r;
+		// drop throught to LessEqual
+	case ELessEqual:
+		return r<=0;
+	case EEqual:
+		return r==0;
+	case ENotEqual:
+		return r!=0;
+		}
+	}