On Sun, 18 Jun 2000, Freeman Jackson wrote:
> Rob Castaneda wrote:
>
> > Hi,
> >
> > >> Name Binding is not enough. You need to distribute EJB Home Object across
> > the >>network too!
> >
> > Give me an example when this is not enough, and why I would have to
> > redistribute the Home object?
>
> You have to distribute before you redistribute. EJB clients need to gain access
> to the Home object and whatever JNDI limitations you impose on your application
> will limit your scalability. Maybe you don't need to distribute and redistribute
> Home objects in a network. The real question is whether or not this is true.
> Maybe you can give me an example.
Hi Freeman --
In jBoss, as far as I can tell, the home interface stub is downloaded on
demand by the client (using http?), once the EJB is found with JNDI.
As a result, there's no need to distribute the object itself in the
sense you're talking about, right? I think some other app servers are
using similar mechanisms.
Regards,
Gary
>
> > JNDI is a naming and directory service, some
> > containers support dynamic class loading but this has nothing to do with
> > JNDI and obtaining references.
>
> It's not an issue of dynamic class loading but distribution over a network. EJB
> Clients and Servers on different machines.
>
> > What if my client is a C++ CORBA client
> > accessing through the naming services' CORBA interface.
>
> COSName is ok for certain things but Jini surrogates with COSName a re possible
> too. It's very easy to write an IDL file and use COSName Stringified
> representations of objects but you still need to distribute/proxy the object
> somehow over the network.
>
> > Why does it need to
> > distribute the EJB Home object across the network??
>
> Maybe not. Maybe all of your EJB clients and servers run on the same machine.
> I'm not clear on this point either. .
>
> Freeman Jackson
> EJB Portal Management with Jini Connection Technology
> Siliware, Inc.
> Jini-JNDI Implementation: http://www.siliware.com/jinijndi.zip
> Draft: http://www.siliware.com/whatisnds.htm
> Draft: http://www.siliware.com/techsnds.htm
> Home Page: http://www.siliware.com
> Voice 201-239-0253
>
> ===========================================================================
> To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
> of the message "signoff EJB-INTEREST". For general help, send email to
> [EMAIL PROTECTED] and include in the body of the message "help".
>
>
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff EJB-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
