|
sl@0
|
1 |
// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
|
|
sl@0
|
2 |
// All rights reserved.
|
|
sl@0
|
3 |
// This component and the accompanying materials are made available
|
|
sl@0
|
4 |
// under the terms of "Eclipse Public License v1.0"
|
|
sl@0
|
5 |
// which accompanies this distribution, and is available
|
|
sl@0
|
6 |
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
|
|
sl@0
|
7 |
//
|
|
sl@0
|
8 |
// Initial Contributors:
|
|
sl@0
|
9 |
// Nokia Corporation - initial contribution.
|
|
sl@0
|
10 |
//
|
|
sl@0
|
11 |
// Contributors:
|
|
sl@0
|
12 |
//
|
|
sl@0
|
13 |
// Description:
|
|
sl@0
|
14 |
// SQL Comparison predicate node class
|
|
sl@0
|
15 |
//
|
|
sl@0
|
16 |
//
|
|
sl@0
|
17 |
|
|
sl@0
|
18 |
#include "UQ_STD.H"
|
|
sl@0
|
19 |
#include "D32COMP.H"
|
|
sl@0
|
20 |
|
|
sl@0
|
21 |
// class CSqlCompPredicate
|
|
sl@0
|
22 |
|
|
sl@0
|
23 |
CSqlCompPredicate::CSqlCompPredicate(TType aType,const TDesC& aColumn,const RSqlLiteral& aLiteral)
|
|
sl@0
|
24 |
: CSqlLiteralNode(aType,aColumn,aLiteral)
|
|
sl@0
|
25 |
{
|
|
sl@0
|
26 |
__ASSERT(aType==ELess||aType==ELessEqual||aType==EEqual||aType==EGreaterEqual||aType==EGreater||aType==ENotEqual);
|
|
sl@0
|
27 |
}
|
|
sl@0
|
28 |
|
|
sl@0
|
29 |
TInt CSqlCompPredicate::CompareLongText8L(const TDbBlob& aBlob,const TTextOps& aTextOp) const
|
|
sl@0
|
30 |
{
|
|
sl@0
|
31 |
TInt r=Comp::Compare8L(StreamLC(aBlob),aBlob.Size(),Value().Text8(),aTextOp);
|
|
sl@0
|
32 |
CleanupStack::PopAndDestroy();
|
|
sl@0
|
33 |
return r;
|
|
sl@0
|
34 |
}
|
|
sl@0
|
35 |
|
|
sl@0
|
36 |
TInt CSqlCompPredicate::CompareLongText16L(const TDbBlob& aBlob,const TTextOps& aTextOp) const
|
|
sl@0
|
37 |
{
|
|
sl@0
|
38 |
TInt r=Comp::Compare16L(StreamLC(aBlob),aBlob.Size(),Value().Text16(),aTextOp);
|
|
sl@0
|
39 |
CleanupStack::PopAndDestroy();
|
|
sl@0
|
40 |
return r;
|
|
sl@0
|
41 |
}
|
|
sl@0
|
42 |
|
|
sl@0
|
43 |
TBool CSqlCompPredicate::EvaluateL(const TTextOps& aTextOp) const
|
|
sl@0
|
44 |
//
|
|
sl@0
|
45 |
// Evaluate a comparison between the columns and the data
|
|
sl@0
|
46 |
// NULL numeric data always compares false
|
|
sl@0
|
47 |
//
|
|
sl@0
|
48 |
{
|
|
sl@0
|
49 |
TDbColumnC col=Column();
|
|
sl@0
|
50 |
TDbColType t=ColType();
|
|
sl@0
|
51 |
if (t<=EDbColDateTime && col.IsNull())
|
|
sl@0
|
52 |
return EFalse; // NULL always compares false for non-text columns
|
|
sl@0
|
53 |
TInt r;
|
|
sl@0
|
54 |
switch (t)
|
|
sl@0
|
55 |
{
|
|
sl@0
|
56 |
default:
|
|
sl@0
|
57 |
__ASSERT(0);
|
|
sl@0
|
58 |
case EDbColBit:
|
|
sl@0
|
59 |
case EDbColUint8:
|
|
sl@0
|
60 |
case EDbColUint16:
|
|
sl@0
|
61 |
case EDbColUint32:
|
|
sl@0
|
62 |
r=Comp::Compare(TInt64(TUint(col.Uint32())),Value().Int64());
|
|
sl@0
|
63 |
break;
|
|
sl@0
|
64 |
case EDbColInt8:
|
|
sl@0
|
65 |
case EDbColInt16:
|
|
sl@0
|
66 |
case EDbColInt32:
|
|
sl@0
|
67 |
r=Comp::Compare(TInt64(TInt(col.Int32())),Value().Int64());
|
|
sl@0
|
68 |
break;
|
|
sl@0
|
69 |
case EDbColInt64:
|
|
sl@0
|
70 |
r=Comp::Compare(col.Int64(),Value().Int64());
|
|
sl@0
|
71 |
break;
|
|
sl@0
|
72 |
case EDbColReal32:
|
|
sl@0
|
73 |
r=Comp::Compare(TReal(col.Real32()),Value().Real64());
|
|
sl@0
|
74 |
break;
|
|
sl@0
|
75 |
case EDbColReal64:
|
|
sl@0
|
76 |
r=Comp::Compare(col.Real64(),Value().Real64());
|
|
sl@0
|
77 |
break;
|
|
sl@0
|
78 |
case EDbColDateTime:
|
|
sl@0
|
79 |
r=Comp::Compare(col.Time(),Value().Time());
|
|
sl@0
|
80 |
break;
|
|
sl@0
|
81 |
case EDbColText8:
|
|
sl@0
|
82 |
r=aTextOp.Compare(col.PtrC8(),Value().Text8());
|
|
sl@0
|
83 |
break;
|
|
sl@0
|
84 |
case EDbColText16:
|
|
sl@0
|
85 |
r=aTextOp.Compare(col.PtrC16(),Value().Text16());
|
|
sl@0
|
86 |
break;
|
|
sl@0
|
87 |
case EDbColLongText8:
|
|
sl@0
|
88 |
{
|
|
sl@0
|
89 |
const TDbBlob& blob=col.Blob();
|
|
sl@0
|
90 |
if (blob.IsInline())
|
|
sl@0
|
91 |
r=aTextOp.Compare(blob.PtrC8(),Value().Text8());
|
|
sl@0
|
92 |
else
|
|
sl@0
|
93 |
r=CompareLongText8L(blob,aTextOp);
|
|
sl@0
|
94 |
}
|
|
sl@0
|
95 |
break;
|
|
sl@0
|
96 |
case EDbColLongText16:
|
|
sl@0
|
97 |
{
|
|
sl@0
|
98 |
const TDbBlob& blob=col.Blob();
|
|
sl@0
|
99 |
if (blob.IsInline())
|
|
sl@0
|
100 |
r=aTextOp.Compare(blob.PtrC16(),Value().Text16());
|
|
sl@0
|
101 |
else
|
|
sl@0
|
102 |
r=CompareLongText16L(blob,aTextOp);
|
|
sl@0
|
103 |
}
|
|
sl@0
|
104 |
break;
|
|
sl@0
|
105 |
}
|
|
sl@0
|
106 |
switch (NodeType())
|
|
sl@0
|
107 |
{
|
|
sl@0
|
108 |
default:
|
|
sl@0
|
109 |
__ASSERT(0);
|
|
sl@0
|
110 |
case EGreater:
|
|
sl@0
|
111 |
r=-r;
|
|
sl@0
|
112 |
// drop throught to ELess
|
|
sl@0
|
113 |
case ELess:
|
|
sl@0
|
114 |
return r<0;
|
|
sl@0
|
115 |
case EGreaterEqual:
|
|
sl@0
|
116 |
r=-r;
|
|
sl@0
|
117 |
// drop throught to LessEqual
|
|
sl@0
|
118 |
case ELessEqual:
|
|
sl@0
|
119 |
return r<=0;
|
|
sl@0
|
120 |
case EEqual:
|
|
sl@0
|
121 |
return r==0;
|
|
sl@0
|
122 |
case ENotEqual:
|
|
sl@0
|
123 |
return r!=0;
|
|
sl@0
|
124 |
}
|
|
sl@0
|
125 |
}
|