CLASS功能.替换传入的字符串成为SQL语句Where关键字后面的表达式:

词语搜索 [例如: 小明]

词组搜索
词组里面每一个词都将被检索
例如: 小强1 小名1 小强强 小小强

逻辑搜索
支持 And 和 Or 运算符.
例如: 小明 And 小强 And 小小强

复合条件:
例如:(小小明 Or 小明) And (小强 Or 小小强)
例如:(小小明 Or 小名) And 小小强
例如: ROOT1 And (广东人 Or 北京人)

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Class CreateQueryString

Public objReg
Public intStart
Public strField
Private objNode2
Private strText

Public Property Let QueryString( strValue )
strText = Lcase( strValue )
End Property

Private Sub Class_Initialize()
Set objReg = new RegExp
strField = "(标题+文章)"
End Sub

Private Sub Class_Terminate()
Set objReg = Nothing
End Sub

Public Default Function GetText()
Dim blnRes
Dim strSky
With objReg
.IgnoreCase = true
.Global = True
.Pattern = "\s"
blnRes = .Test( strText )
End With
If (Not blnRes) Then
intStart = 2
GetText = strField & " like '%" & strText & "%'"
Else
objReg.Pattern = "\sand|\sor"
blnRes = objReg.Test( strText )
If blnRes Then
strSky = check()
If strSky = False Then
GetText = wahaha()
Else
GetText = strSky
End if
Else
GetText = wahaha()
End if
End If
End Function

Private Function wahaha()
Dim strTer
Dim strLikes
Dim strOrs
Dim strI
Dim objRe
strTer = ""
strLikes = " or (" & strField & " like '%"
strOrs = "%')"
objReg.Pattern = "(\S*\S)"
Set objRe = objReg.Execute(strText)
For Each strI In objRe
strTer = strTer & strLikes & strI & strOrs
Next
wahaha = Mid( strTer , 4 )
intStart = 3
End Function

Private Function CheckYes( strMode , intCount)
Dim objNode1
objReg.Pattern = strMode
Set objNode1 = objReg.Execute( strText )
If objNode1.Count < 1 Then
CheckYes = True
Else
Set objNode2 = objNode1( 0 )
If objNode2.subMatches.C