You can try ReadOnly entity beans (weblogic and other vendors support this)
and have a timeout period, or devise a lazy-dirty system. There's a good
one described here:
http://dima.dhs.org/misc/
Gene
----- Original Message -----
From: "Bolt, Dave" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, April 06, 2001 1:29 PM
Subject: Lazy loading media in EJB
> I have an bean-managed entity bean which reads an image from a custom
> multimedia repository. The image is stored inside my bean as a byte array
> and can be served to a web client via a servlet. The bean is read-only in
> regards to the repository, it is not used as the mechanism for updating
the
> binary data.
>
> I'd like to lazy load my bean, by only talking to the media repository
(via
> sockets) when absolutely needed. This will keep the load on the server
down.
> The only reliable scheme I have found is to code the read into my
ejbLoad()
> callback so that it happens every time.
>
> Here is what I'd like.
>
> 1) Load the media only when the media is requested, once it is requested,
it
> can stay in memory until passivated.
> 2) If the media has been loaded, I need the bean to dump it and reload it
> when my bean instance is swapped out.
>
> Thus loading the media is defered, until absolutely necessary, but once
> loaded it is maintained in memory until the bean is swapped out.
>
> What scheme can I use that combines ejbActivate(), ejbPassivate(), and
> ejbLoad() to get this behavior.
>
> Dave Bolt
> There is always plenty of bandwidth, just none for you.
>
>
===========================================================================
> To unsubscribe, send email to [EMAIL PROTECTED] and include in the
body
> of the message "signoff EJB-INTEREST". For general help, send email to
> [EMAIL PROTECTED] and include in the body of the message "help".
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff EJB-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
