捌度空間 緩存類代碼
復(fù)制代碼 代碼如下:
%
class Cache
private obj 'cache內(nèi)容
private expireTime '過(guò)期時(shí)間
private expireTimeName '過(guò)期時(shí)間application名
private cacheName 'cache內(nèi)容application名
private path 'url
private sub class_initialize()
path=request.servervariables("url")
path=left(path,instrRev(path,"/"))
end sub
private sub class_terminate()
end sub
public property get blEmpty
'是否為空
if isempty(obj) then
blEmpty=true
else
blEmpty=false
end if
end property
public property get valid
'是否可用(過(guò)期)
if isempty(obj) or not isDate(expireTime) then
valid=false
elseif CDate(expireTime)now then
valid=false
else
valid=true
end if
end property
public property let name(str)
'設(shè)置cache名
cacheName=str path
obj=application(cacheName)
expireTimeName=str "expires" path
expireTime=application(expireTimeName)
end property
public property let expires(tm)
'重設(shè)置過(guò)期時(shí)間
expireTime=tm
application.lock
application(expireTimeName)=expireTime
application.unlock
end property
public sub add(var,expire)
'賦值
if isempty(var) or not isDate(expire) then
exit sub
end if
obj=var
expireTime=expire
application.lock
application(cacheName)=obj
application(expireTimeName)=expireTime
application.unlock
end sub
public property get value
'取值
if isempty(obj) or not isDate(expireTime) then
value=null
elseif CDate(expireTime)now then
value=null
else
value=obj
end if
end property
public sub makeEmpty()
'釋放application
application.lock
application(cacheName)=empty
application(expireTimeName)=empty
application.unlock
obj=empty
expireTime=empty
end sub
public function equal(var2)
'比較
if typename(obj)>typename(var2) then
equal=false
elseif typename(obj)="Object" then
if obj is var2 then
equal=true
else
equal=false
end if
elseif typename(obj)="Variant()" then
if join(obj,"^")=join(var2,"^") then
equal=true
else
equal=false
end if
else
if obj=var2 then
equal=true
else
equal=false
end if
end if
end function
end class
%>
使用方法:
復(fù)制代碼 代碼如下:
set myCache=new cache
myCache.name="flash1"
If myCache.valid then
StartGet = myCache.value
Else
StartGet = GetHttpPage(HttpUrl)
myCache.add StartGet,dateadd("h",3,Now)
End if
List=GetBody(StartGet,"/form>","!-- ********網(wǎng)頁(yè)中部代碼結(jié)束******** -->",False,False)