CacheCls緩存的應(yīng)用

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Rem =================================================================
Rem = 類:CacheCls
Rem = 說(shuō)明:緩存的應(yīng)用
Rem = Revision:1.01 Beta
Rem = 作者:熊氏英雄（cexo255）
Rem = Date:2005/05/6 18:38:10
Rem = QQ:30133499
Rem = MySite:Http://www.Relaxlife.net
Rem = 下載：Http://www.Relaxlife.net/cexo/Cache_pro.rar
Rem = QQ群：4341998
Rem = 適用:對(duì)一些常用到，而又不常改變的數(shù)據(jù)放入緩存中，調(diào)用速度要比每次都要從數(shù)據(jù)庫(kù)中讀要快N陪
Rem =================================================================

CacheName = "RL"
Class CacheCls
    Private LocalCacheName, Cache_Data

    Public Property Let Name(ByVal vNewValue)
        LocalCacheName = LCase(vNewValue)
        Cache_Data=Application(CacheName  "_"  LocalCacheName)
    End Property

    Public Property Let Value(ByVal vNewValue)
        Dim N,i,NewValueArr
        If LocalCacheName>"" Then 
            N = CountInStr(vNewValue,"|")
            NewValueArr = Split(vNewValue,"|",-1,1)
            ReDim Cache_Data(N)
            For i = 0 to N
                Cache_Data(i) = NewValueArr(i)
            Next 
            Application.Lock
            Application(CacheName  "_"  LocalCacheName) = Cache_Data
            Application.unLock
        Else
            Response.Write "設(shè)置緩存出錯(cuò)，或緩存名不能為空，請(qǐng)重新更新緩存"
            Response.End()
        End If
    End Property

    Public Property Get Value()
        If LocalCacheName>"" Then     
            If IsArray(Cache_Data) Then
                Value=Cache_Data
            End If
        Else
            Response.Write "設(shè)置緩存出錯(cuò)，或緩存名不能為空，請(qǐng)重新更新緩存"
            Response.End()
        End If
    End Property

    '取指定緩存中的值
    Public Function GetCacheValue(MyCaheName)
        GetCacheValue = Application(CacheName  "_"  MyCaheName)
    End Function

    '取所有緩存名
    Public Function GetallCacheName()
        Dim Cacheobj
        For Each Cacheobj in Application.Contents
            GetallCacheName = GetallCacheName  Cacheobj  ","
        Next
        GetallCacheName = Left(GetallCacheName,Len(GetallCacheName)-1)
        GetallCacheName = Replace(GetallCacheName,CacheName  "_","")
    End Function

    '釋放緩存    
    Public Sub DelCahe(MyCaheName)
        Application.Lock
        Application.Contents.Remove(CacheName  "_"  MyCaheName)
        Application.unLock
    End Sub

    '釋放所有緩存
    Public Sub RemoveAllCache()
        Dim Cachelist,i
        Cachelist=Split(GetallCacheName(),",")
        If UBound(Cachelist)>0 Then
            For i=0 to UBound(Cachelist)
                DelCahe Cachelist(i)
            Next
        End If
    End Sub

    '統(tǒng)計(jì)字符Char在Str中出現(xiàn)的次數(shù)
    Private Function CountInStr(Str,Char)
        CountInStr = 0
        Dim i, CharLen
        CharLen = Len(Char)
        For i = 1 to Len(Str)
            If Mid(Str, i, CharLen) = Char Then CountInStr = CountInStr + 1
        Next
    End Function

End Class

Dim CachePro 
Set CachePro = New CacheCls
'設(shè)置緩存“cexo255”和它的值："cexo2551|cexo2552|cexo2553|cexo2554|cexo2555"
CachePro.Name = "cexo255"
CachePro.Value = "cexo2551|cexo2552|cexo2553|cexo2554|cexo2555"
'取當(dāng)前緩存中的值
'CacheArr = CachePro.Value

CachePro.Name = "wxf"
CachePro.Value = "wxf"
CachePro.Name = "dw"
CachePro.Value = "dw"

'釋放緩存cexo255
'CachePro.DelCahe("cexo255")

'釋放所有緩存
'CachePro.RemoveAllCache

'取cexo255緩存中的值
CacheArr = CachePro.GetCacheValue("cexo255")
If isArray(CacheArr) Then
    For i = 0 to UBound(CacheArr)
        Response.Write CacheArr(i)  "br>"
    Next
Else
    Response.Write "緩存被釋放?。?！"
End if

Set CachePro = Nothing
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