At 11:53 AM 5/23/01 -0500, Ian Bicking wrote:
>J�rn Schrader <[EMAIL PROTECTED]> wrote:
> > I would like to use MiddleKit in a WebKit Application. Can anyone describe
> > the best way to embed a middlekit store in the WebKit Application, so
> that I
> > dont have to open it for each request.
>
>I have a SitePage class that all pages inherit from. I include a
>method:
>
> def store(self):
> if not hasattr(self, "_store"):
> self._store = MySQLObjectStore(user='username',
> passwd='password')
>
>self._store.readModelFileNamed(os.path.join('Gallery'))
> return self._store
>
>Then I just call self.store() to get the store.
>
>It might be better to do:
>
> def store(self):
> try:
> return self._store
> except AttributeError:
> self._store = [...]
> return self._store
>
> Ian
This isn't thread-safe -- 2 servlets could create the store at the same time.
You're better off putting the store initialization into a module that gets
imported -- then Python automatically ensures that only one thread imports
it at once. (Either that or you should explicitly use a threading.Lock
object to make it thread-safe.)
If you want to "pre-load" the store when the app server starts up to reduce
response time, then you can put the import into the __init__.py in your
context directory. __init__.py automatically gets imported when the app
server starts.
--
- Geoff Talvola
[EMAIL PROTECTED]
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