[jbosscache-dev] Notification interceptor

[Bela Ban]

Let's find the bits and pieces of emails between us and Hany, we 
discussed this feature in great detail. IIRC, one of the issues was that 
there was no real good place for the NotificationInterceptor, in some 
cases towards the top would have been okay, in some not. Example: 
CacheLoader/Store interceptor: those methods don't get passed up, so a 
NotifInt towards the top would not be able to catch them.

But, yes, we need to start thinking about having all notifications 
emitted from one place, so let's kick-start that thought process again. 
Even if we end up having only 95% of all notifications emitted from the 
interceptor, and the rest directly, that would be fine too.

Manik, maybe it is a good idea to involve Hany again, because he was 
involved real deep before... I'm sure he remembers some of the 
discussions...

Manik Surtani wrote:
> Hi,
>
> There was talk of a separate notification interceptor some while 
> back.  What happened around this?
>
> Looking at wiring in the relevant notifications for move() and realise 
> what a PITA it is with notification calls scattered all over the code 
> base.
>
> I think an interceptor at (or close to) the head of the chain to fire 
> notifications would be quite straightforward and easy - pre and post 
> notifications would be easily handled.  The only notification that 
> would originate outside of this interceptor would be 
> load/evict/activate/passivate notifications ...
>
> What do people think?
>
> Cheers,
> -- 
> Manik Surtani
>
> Lead, JBoss Cache
> JBoss, a division of Red Hat
>
> Email: manik at jboss.org
> Telephone: +44 7786 702 706
> MSN: manik at surtani.org
> Yahoo/AIM/Skype: maniksurtani
>
>
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-- 
Bela Ban
Lead JGroups / Manager JBoss Clustering Group
JBoss - a division of Red Hat