Re: [infinispan-dev] support for extending Infinispan
On 13 Sep 2010, at 18:05, Manik Surtani wrote:
On 13 Sep 2010, at 17:19, Mircea Markus wrote:
> Hi,
>
> I've been working on an POC for continuous-query in ISPN. This runs on top of
Drools, and is a independent mvn module.
> One of the things I needed to do was broadcasting remote commands and make them
available in the interceptor chain. As Infinispan does only support a fixed number of
Commands and I cannot (and don't want to) add a new command as I am in a different
module, I hacked the PutKeyValue: on special key values, my interceptors know that they
should handle it. This way, PutKeyValue is not a put per se, but a way to facilitate RPC
and an ugly hack :)
What "command" is this, what do you need to be able to broadcast?
It
would be a GenericVisitableCommand, see bellow.
In my scenario I need to broadcast query definitions and queries. More to come
potentially.
> I was thinking that a GenericCommand that would contain a Map of parameters would be
handy for this scenario. Also a method on the visitor, visitGenericCommand. This would
allow integration projects (like cq) to be done nicely. If this sounds appealing I can
detail..
-1. This sounds like it opens a huge can of worms, making things hard to maintain and
open to abuse.
Maintenance shouldn't be a problem as we won't support
other people's code.
Commands should be very specific and properly typed.
That's
imposible in my scenario, as I am in a different module. I can add the command to the
core, but that's not the way to do it.
--
Manik Surtani
manik(a)jboss.org
Lead, Infinispan
Lead, JBoss Cache
http://www.infinispan.org
http://www.jbosscache.org
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