Re: Can we use Jigs

[Kotesh]

Nicol,

your assumptions about my intention towards replacing DO with jigs is
correct. But currently I am evaluating different technologies like JMS,RMI
etc. I am more worried about the performance impact on the components after
replacing DO. In any case I will let you know if get any success in
embedding new communication medium inside jigs...

thanks
kotesh




----- Original Message -----
From: "Nicola Pero" <nicola@brainstorm.co.uk>
To: "Kotesh" <kotesh@orillion.com>
Cc: "Discuss-Gnustep (E-mail)" <discuss-gnustep@gnu.org>; "Nicola Pero"
<n.pero@mi.flashnet.it>
Sent: Monday, September 10, 2001 5:00 PM
Subject: Re: Can we use Jigs


>
> Hi,
>
> > Hi,
> >
> > Can jigs be used as a communication medium between two ObjectiveC
> > components?
> > To be Precise can jigs replace the existing DO communication between two
> > ObjectiveC components?
>
> I'm not sure I understood what you want to do... :-)
>
> DO (distributed objects) is mainly used to have objects in different
> processes/machines talk as if they were in the same process. (also useful
> with different threads).
>
> JIGS allows you to talk to Java objects from Objective-C and viceversa,
> but all in the same process.
>
> Perhaps you mean you want to use Java's RMI instead of DO to talk between
> objects in different processes, and you want to access Java's RMI from
> Objective-C by using JIGS.
>
> GNUstep DO are more dynamical and flexible than Java's RMI - you don't
> have to generate stubs or stuff like that - everything just works out of
> the box at runtime - it's because Objective-C is more flexible than Java.
>
> But, if you want to interface a GNUstep ObjC app with a Java's RMI app, it
> might be useful and interesting to try using Java's RMI from ObjC.
>
> I never experimented with that, please let me know if you do :-)
>
> I suppose it might work to access a remote Java's RMI server from
> Objective-C using JIGS by simply getting the java object in ObjC, and
> accessing it as if it were a local java object - Java's RMI should do the
> rest.  NB: `easily' should not be taken too literally as using Java from
> Objective-C works quite well but it's quite cumbersome and not well
> documented yet - anyway accessing a remote Java RMI server should not be
> any more difficult than accessing a local Java object.
>
> Perhaps you might want to declare manually an Objective-C protocol which
> mirrors the Java interface implemented by the remote server to make sure
> it's compiled right ...
>
> Exposing ObjC stuff to remote Java processes using Java RMI is going to be
> less attractive, you probably want to write manually a Java RMI server
> which internally calls methods of ObjC objects exposed to Java - that will
> certainly work.
>
> There might be ways to add better support in JIGS for these games but I've
> never experimented with them.  If you have suggestions, they are welcome.
>
> > If yes , Is there any information on this is avialable on the Net???
>
> no