一個(gè)改進(jìn)的ASP生成SQL命令字符串類(lèi)的代碼[已測

代碼如下:
<%
class SQLString
'************************************
'變量定義
'************************************
'sTableName ---- 表名
'iSQLType ----SQL語(yǔ)句類(lèi)型：0-增加，1-更新，2-刪除,3-查詢(xún)
'sWhere ---- 條件
'sOrder ---- 排序方式
'sSQL ----值
Private sTableName,iSQLType,sWhere,sOrder,sSQL
'************************************
'類(lèi)初始化/結束
'************************************
Private Sub Class_Initialize()
sTableName=""
iSQLType=0
sWhere=""
sOrder=""
sSQL=""
End Sub
Private Sub Class_Terminate()
End Sub
'************************************
'屬性
'************************************
'設置表名的屬性
Public Property Let TableName(value)
sTableName=value
End Property
'設置條件
Public Property Let Where(value)
sWhere=value
End Property
'設置排序方式
Public Property Let Order(value)
sOrder=value
End Property
'設置查詢(xún)語(yǔ)句的類(lèi)型
Public property Let SQLType(value)
iSQLType=value
select case iSQLType
case 0
sSQL="insert into {&*#}0 ({&*#}1) values ({&*#}2)"
case 1
sSQL="update {&*#}0 set {&*#}1={&*#}2"
case 2
sSQL="delete from {&*#}0 "
case 3
sSQL="select {&*#}1 from {&*#}0 "
end select
End Property
'************************************
'函數
'************************************
'增加字段（字段名稱(chēng)，字段值）
Public Sub AddField(sFieldName,sValue)
select case iSQLType
case 0
sSQL=replace(sSQL,"{&*#}1",sFieldName & ",{&*#}1")
sSQL=replace(sSQL,"{&*#}2","" & sValue & ",{&*#}2")
case 1
sSQL=replace(sSQL,"{&*#}1",sFieldName)
sSQL=replace(sSQL,"{&*#}2","" & sValue & ",{&*#}1={&*#}2")
case 3
sSQL=replace(sSQL,"{&*#}1",sFieldName & ",{&*#}1")
End Select
End Sub
'修改的返回字符串值的函數
'返回SQL語(yǔ)句
Public Function ReturnSQL()
sSQL=replace(sSQL,"{&*#}0",sTableName)
select case iSQLType
case 0
sSQL=replace(sSQL,",{&*#}1","")
sSQL=replace(sSQL,",{&*#}2","")
case 1
sSQL=replace(sSQL,",{&*#}1={&*#}2","")
case 3
sSQL=replace(sSQL,",{&*#}1","")
end Select
if sWhere<>"" and iSQLType<>0 then
sSQL=sSQL & " where " & sWhere
end if
if sOrder<>"" and iSQLType<>0 then
sSQL=sSQL & " order by " & sOrder
end if
ReturnSQL=sSQL
End Function
'返回SQL語(yǔ)句
Public Function ReturnSQL1()
sSQL=replace(sSQL,"{&*#}0",sTableName)
select case iSQLType
case 0
sSQL=replace(sSQL,",{&*#}1","")
sSQL=replace(sSQL,",{&*#}2","")
case 1
sSQL=replace(sSQL,",{&*#}1={&*#}2","")
case 3
sSQL=replace(sSQL,",{&*#}1","")
end Select
if sWhere<>"" and iSQLType<>0 then
sSQL=sSQL & " where " & sWhere
end if
if sOrder<>"" and iSQLType<>0 then
sSQL=sSQL & " order by " & sOrder
end if
ReturnSQL=sSQL
End Function
'清空語(yǔ)句
Public Sub Clear()
sTableName=""
iSQLType=0
sWhere=""
sOrder=""
sSQL=""
End Sub
End class
%>
調用例子：
<%
set a =new SQLString '創(chuàng )建類(lèi)對象
a.TableName=" message " '設置表名為message
'a.where=" issend =9"
'a.order=" issend desc"
a.SQLType=0 '設置查詢(xún)類(lèi)型為增加記錄
a.AddField " incept", "'2'"
a.AddField " sender ", "'%3%' "
a.AddField " title ", "#"&now&"#"
a.AddField " sender ", "5 "
a.AddField " content ", " 6 "
a.AddField " sendtime ", "7"
a.AddField " flag", 8
a.AddField " issend ", 9
Response.Write a.ReturnSQl
set a=nothing
%>
<%
set a =new SQLString '創(chuàng )建類(lèi)對象
a.TableName=" message " '設置表名為message
'a.where=" issend =9"
'a.order=" issend desc"
a.SQLType=0 '設置查詢(xún)類(lèi)型為增加記錄
a.AddField " incept", "'2'"
a.AddField " sender ", "'%3%' "
a.AddField " title ", "#"&now&"#"
a.AddField " sender ", "5 "
a.AddField " content ", " 6 "
a.AddField " sendtime ", "7"
a.AddField " flag", 8
a.AddField " issend ", 9
Response.Write a.ReturnSQl
set a=nothing
%>
<%
set a =new SQLString '創(chuàng )建類(lèi)對象
a.TableName=" message " '設置表名為message
'a.where=" issend =9"
'a.order=" issend desc"
a.SQLType=0 '設置查詢(xún)類(lèi)型為增加記錄
a.AddField " incept", "'2'"
a.AddField " sender ", "'%3%' "
a.AddField " title ", "#"&now&"#"
a.AddField " sender ", "5 "
a.AddField " content ", " 6 "
a.AddField " sendtime ", "7"
a.AddField " flag", 8
a.AddField " issend ", 9
Response.Write a.ReturnSQl
set a=nothing
%>