Transfering an object within J2EE

I have this problem. I need to use an object in the client side, that is
gotten in on the server side, on a  non-web J2EE aplication.
Once I get this object I want to used locally and save it locally. Only when
the object on the server side changes ( its code is upgraded) I will
download it again. I think this could be made using RMI, but using EJB
tecnlogoly I can't do this, because only a reference is transfered and not
the object itself. I need the object on the client side because I what it to
run in the client machine , even if the server is down.

If I transfer a plain old java object (POJO) using a stateless EJB has a
factory , can I save the object locally ? And if yes how ?

SMMT wrote:

>I have this problem. I need to use an object in the client side, that is
>gotten in on the server side, on a  non-web J2EE aplication.
>Once I get this object I want to used locally and save it locally. Only whe
n
>the object on the server side changes ( its code is upgraded) I will
>download it again. I think this could be made using RMI, but using EJB
>tecnlogoly I can't do this, because only a reference is transfered and not
>the object itself. I need the object on the client side because I what it t
o
>run in the client machine , even if the server is down.
>
>If I transfer a plain old java object (POJO) using a stateless EJB has a
>factory , can I save the object locally ? And if yes how ?
>
>
>
>
Hi,
I 'm supposing you're talking about a java standalone program (clint
side) that need some kind of  code-synchronization with the server version.
You'd probably use java web start technology.
carlo

 
when 
not 
to 
> Hi,
> I 'm supposing you're talking about a java standalone program (clint
> side) that need some kind of  code-synchronization with the server
version.
> You'd probably use java web start technology.

No. In my project I will need to use some objects like validators and
converters that are used too ofen to use a Stateless Bean to do the
validation server side. I'm not developing for web, but a client / server
aplication.
My idea was, to look for the validator once , and cache it on the client
side. But for this to happen I need the object to be free of j2ee server
side string-attachments.


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.760 / Virus Database: 509 - Release Date: 10/9/2004

Have you tried using RMI to talk between the server side EJBs directly to th
e client or to a facade on the server side outside of the container.  So it 
could be you have an EJB talking with a POJO in the app server but not in th
e container.  The POJO deals with interfaces and then talks with the applica
tion via RMI or any protocol you want.  The POJO may be able to talk with th
e EJB using interfaces or RMI.

I am struggling with the same problem in a way.  No good answer yet. 

David


quote:
Originally posted by SMMT 
I have this problem. I need to use an object in the client side, that is
gotten in on the server side, on a  non-web J2EE aplication.
Once I get this object I want to used locally and save it locally. Only when
the object on the server side changes ( its code is upgraded) I will
download it again. I think this could be made using RMI, but using EJB
tecnlogoly I can't do this, because only a reference is transfered and not
the object itself. I need the object on the client side because I what it to
run in the client machine , even if the server is down.

If I transfer a plain old java object (POJO) using a stateless EJB has a
factory , can I save the object locally ? And if yes how ?