<%@LANGUAGE="VBSCRIPT" CODEPAGE="936"%>
<% Option Explicit %>
<% Response.Buffer = True %>
<%
' /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
' ///
' /// 文件名: SQLBuilderForVbs
' /// 作用: 构建一些简单的SQL语句，结合在提交表单时使用，可以较方便
' /// 程式编写者: 曾思源
' /// 说明: 简单SQL语句构建“类”,VBS版,只要保留本注释段，无论是否涉及商业，您可以任意使用，转载或引用
' /// 日期: 2005-1-8
' ///_________________________________________________________________________________________________
' /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
%>
<%
On Error Resume Next

Class QuestStringBuilder

Private objFields
Private strTableName
Private strPKey
Private strPKeySort
Private strCondition
Private aContition()
Private strOperator
Private strLogic
Private blnState

'/-----初始化-----/

Private Sub Class_Initialize()
Set objFields = Server.CreateObject("Scripting.Dictionary")
strTableName = Null
strPKey = Null
strPKeySort = Null
strCondition = Null
ReDim aContition(1)
strOperator = "="
strLogic = " AND "
blnState = False
End Sub

Private Sub Class_Terminate()
Set objFields = Nothing
strTableName = Null
strPKey = Null
strPKeySort = Null
strCondition = Null
Erase aContition
strOperator = Null
strLogic = Null
blnState = False
End Sub

' /----字段名处理----/

Private Function ProcessField(ByVal sField)
ProcessField = "[" & sField & "]"
End Function

' /-----字段值处理-----/

Private Function ProcessValue(ByVal sValue)
Dim tmpType : tmpType = VarType(sValue)
Select Case tmpType
Case 2,3,4,5,11 ' 数字类型，布尔类型
ProcessValue = sValue
Case 8 ' 字符类型
ProcessValue = "'" & Safe(sValue) & "'"
Case Else ' 其它类型
ProcessValue = "'" & Safe(sValue) & "'"
End Select
End Function

' /-----综合处理-----/

Private Function Process(ByRef obj, ByVal strType)
Dim Keys : Keys = obj.Keys
Dim Items : Items = obj.Items
Dim intCount : intCount = obj.Count
Dim tmp()
ReDim tmp(1)
If intCount > 0 Then
Dim tmpArray(), I
ReDim tmpArray(intCount-1)
For I=0 To intCount - 1
tmpArray(I) = Keys(I) & "=" & Items(I)
Next
Select Case UCase(Trim(strType))
Case "UPDATE"
Process = Join(tmpArray, ", ")
Case "SELECT"
Process = Join(Keys, " ,")
Case "INSERT"
tmp(0) = Join(Keys, " ,")
tmp(1) = Join(Items, " ,")
Process = tmp
Erase tmp
End Select
Erase tmpArray
Else
Select Case UCase(Trim(strType))
Case "UPDATE"
Process = False
Case "SELECT"
Process = "*"
Case "INSERT"
Process = tmp
End Select
End If
End Function

' /-----小小的安全处理-----/

Private Function Safe(s)
Safe = Replace(s,"'","''")
End Function

' /-----清空上一次输入的参数，但保留TableName-----/

Public Sub Clear()
objFields.RemoveAll
'strTableName = Null
strPKey = Null
strPKeySort = Null
strCondition = Null
Erase aContition
strOperator = "="
strLogic = " AND "
blnState = False
End Sub

' /----生成查询语句--