/
SQLArithmeticExpression.cls
executable file
·68 lines (55 loc) · 1.79 KB
/
SQLArithmeticExpression.cls
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
VERSION 1.0 CLASS
BEGIN
MultiUse = -1 'True
Persistable = 0 'NotPersistable
DataBindingBehavior = 0 'vbNone
DataSourceBehavior = 0 'vbNone
MTSTransactionMode = 0 'NotAnMTSObject
END
Attribute VB_Name = "SQLArithmeticExpression"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = True
' ___________________________________________________
'
' © Hi-Integrity Systems 2014. All rights reserved.
' www.hisystems.com.au - Toby Wicks
' ___________________________________________________
'
Option Explicit
Implements ISQLExpression
Public Enum SQLArithmeticOperatorEnum
dboArithmeticAdd
dboArithmeticSubtract
dboArithmeticMultiply
dboArithmeticDivide
dboArithmeticModulus
End Enum
Public Left As ISQLExpression
Public Right As ISQLExpression
Public Operator As SQLArithmeticOperatorEnum
Private Sub Class_Initialize()
Set Left = New SQLValueExpression
Set Right = New SQLValueExpression
Operator = dboArithmeticAdd
End Sub
Private Property Get ISQLExpression_SQL(ByVal eConnection As ConnectionTypeEnum) As String
ISQLExpression_SQL = "(" & Left.SQL(eConnection) & " " & OperatorToString(Operator) & " " & Right.SQL(eConnection) & ")"
End Property
Private Function OperatorToString(ByVal eOperator As SQLArithmeticOperatorEnum) As String
Select Case eOperator
Case dboArithmeticAdd
OperatorToString = "+"
Case dboArithmeticDivide
OperatorToString = "/"
Case dboArithmeticModulus
OperatorToString = "%"
Case dboArithmeticMultiply
OperatorToString = "*"
Case dboArithmeticSubtract
OperatorToString = "-"
Case Else
RaiseError dboErrorInvalidArgument
End Select
End Function