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Re: [ozone-dev] Ozone and jBoss
Hi,
Thanks to Gerd for the reply.
For finders in EJB, you would typically write something like:
Enumeration findByPrimaryKey( CustomerPK key );
Enumeration findBySurname( String surname );
on a Customer bean whos primary key is CustomerPK class. The return value is
the set of Customer objects which satisfy the given criteria.
In your opinion, is it possible to use such methods for finding objects with
Ozone as it stands at the moment?
Thanks,
Peter.
----- Original Message -----
From: "Gerd Mueller" <gerd@smb-tec.com>
To: <ozone-users@ozone-db.org>
Sent: Wednesday, October 04, 2000 8:16 AM
Subject: Re: [ozone-dev] Ozone and jBoss
>
> Hi,
>
> > I have been charged with looking at integrating Ozone and jBoss with
regards
> > to implementing Container Managed Persistence (CMP). I am not sure,
however,
> > that Ozone is a good choice and I would like some opinions.
> >
> > First of all, is it even possible? Bare in mind that for EJB support,
you
> > must be able to execute 'finder' queries which return result sets. That
> > means a query language and I believe Ozone doesn't have one, navigation
(I
> > presume) being done by well known root objects and persistence by
> > reachability.
>
> That's right, at the moment there is no query language but as you may have
> noticed there are discussions in the ozone-users list about that. I'm not
that
> familar with EJB, so I don't know what is necessary for 'finders'. Do we
really
> need an query language for that ? If yes, it could be really difficult to
use
> ozone for CMP at the moment.
>
> > If it is possible, has anyone tried to do something similar with it
already?
>
> As far as I know you are the first one :)
>
> > Basically, I'm looking for opinions on how Ozone could be used for CMP
if at
> > all. Any help would be appreciated. Also, since jBoss is now part of a
fully
> > commercial supported product called openJoda, it would do Ozone no harm
to
> > be associated with jBoss.
>
> Best Regards,
> Gerd
>
> --
> ________________________________________________________________
> Gerd Mueller gerd@smb-tec.com
> SMB GmbH http://www.smb-tec.com
>