David,
What are you trying to achieve? Persistent objects, including transactions?
I can do that using any number of DBs with a JDBC driver. Ozone can do it
to. But EJBs are not just about storing objects, are they? (Are they? :-))
EJBs are there to provide scalable middleware to distance clients from the
database, and many other things too. Search for discussions on 3-tier
architecture for reasons why this is a good idea. Also, of course, you tie
yourself to ozone if you use a client linked directly to it. jBoss isn't
just EJB... it's J2EE. This can obviously do more than Ozone.. Servlets,
JSPs, Web app hosting, JMS and the whole alphabet soup. Ozone can't do any
of the stuff.
As for plans to integrate jBoss and Ozone, yes there are. This is under
Project Game Over on the site and I'm assigned to look at it. I am currently
setting up an environment at home to do building and testing of such things
and hopefully will begin next week (where "begin" = "start pestering list
with questions about jBoss"!!)
CMP is a great theory. What you say about switching from Hypersonic to Ozone
(or InstantDB, PostgreSQL...) *should* be true, but I don't think it is just
yet. We can all work on it though! Maybe I'm wrong, and changing DBs at the
moment is already seamless!!
Peter.
----- Original Message -----
From: "David Leuschner" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, August 09, 2000 9:59 AM
Subject: [jBoss-User] ozone and jboss
> Hi,
>
> I'm a beginner and I've looked at jBoss and looked at ozone and thought:
why
> should I care about the ejbSpec? I could write simple java classes (and
use
> inheritance and interfaces as i like) and they would be persistent and
> transactional, which is all I need. I don't need servlets and JSP for my
> current project. Why should I use jBoss? What are the main advantages of
an
> ejbServer to an oodbms? Please tell me what I missed...
>
> Let's say you convinced me - jBoss can do more than ozone. Will ozone be
> integrated in jBoss as backend-storage instead of an relational-db which I
> wouldn't use anyway? (As I will only write CMP-Beans I should be able to
> switch from Hypersonic to Ozone whithout having to change the code?)
>
> Can I build class hierarchies with EJB 1.1? Can I have a manager bean
which
> somehow extends a person bean? Is there a book like "applying design
> patterns to ejb"? Should I do so? I seemed to me as if this was
impossible.
>
> Another thing:
> I would be GREAT to have releases (i don't mind alpha beta or whatever)
more
> often and to have a list which tell's me what should be working and what
> still has to be implemented.
>
> Thanks in advance,
>
> regards
>
> david
>
>
>
>
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