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Article #49

Re: Passing Objects by value using a CORBA Compliant ORB

#49
From: Andreas Vogel
Date: Sat, 04 Oct 1997 00:00
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John Poulin wrote:

> > > So how would you work with complex result set received ?
> > Nowadays you have something called opaque, which allows you to
> > transfer
> > the object itself (if i understand correctly).
> > Haven't tried it yet, we have our own way of distributing
> > (java)objects
> > (not references) with CORBA.
> > Would like to hear from someone who has tried this opaque-ting. :)
>

as someone ales pointed out already, it's mostly like that you just pass
data in dome combination sequences, struct, unions etc and NOT objects.

>     As far as I understand it "opaque" is Orbix specific or currently
> ORB vendor specific.  If you pass a object by value using an opaque
> type
> you must handle the marshalling of the objects parametes on the server
>
> side, and the demarshalling of the parameters on the client side.
>

that's correct, Visbroker/Caffeine has chose a different approach

>     I have heard rumors that pass by value is soon to be an addition
> to
> the CORBA standard.  Does anyone know if this has been done yet?  Does
>
> anyone know if ORB vendors have supported it yet?

It's not yet adopted, final specs have been delayed for another couple
of month, I guess that due to the aloignment with RMI, for details
check:

    http://www.omg.org/library/schedule.htm

Cheers,

Andreas

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note:           The answer to your Java/CORBA question is quite likely to be found at http://www.wiley.com/compbooks/vogel
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From: Andreas Vogel <avogel@visigenic.com>
Subject: Re: Passing Objects by value using a CORBA Compliant ORB
Date: 1997/10/04
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