We've given some thought (haven't built much) to this.
Either the Event Service or the Asynchronous Messaging from
CORBA seem more appealing if there's a possibility of clients
that aren't Java.
We've also used some research-ware to manage subscriptions,
profiles and the like; see http://www.cda.mews.org/ or
drop me a line if you're interested.
Eric Hughes
Jeffrey Vagg - Sun Dallas wrote:
>
> Hi,
>
> I assume JMS will be the standard way to perfom this. If you use the
>publish/subscribe
> pattern in JMS it allows for the registration on topics (same as Weblogic events).
>
> Jeff Vagg
>
> >There doesn't seem to be any mechanism in the EJB framework
> >for doing event dispatching. I'm thinking of the case where several
> >clients are displaying "live" data (managed ultimately by an entity
> >bean somewhere). If one of the clients modifies the data, how
> >can the other clients be notified?
> >
> >I imagine most app servers provide some form of event
> >notification services, but these would be non-standard.
> >Is there a standard EJB way to handle this?
> >
> >We've been testing WebLogic events. The doc implies that
> >any arbitrary serializable object can be used as message data.
> >However, we've only been able to get it to work with built-in
> >objects (e.g. Integer), and not with any of our own objects.
> >Has anybody any experience in this area?
> >
> >Thanks! Michael
> >
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>
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--
Eric Hughes The MITRE Corporation [EMAIL PROTECTED] 781-271-7486
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