Nice! Though Orion and Weblogic both support incomplete versions of 2.0 (and each
different
aspects at that) and all of that is subject to change, of course! I couldn't tell
though if
Weblogic supports m-n relationships in a solid manner.
--- Reid Hartenbower <[EMAIL PROTECTED]> wrote:
> Hi Ray. The only vendors I know of who have EJB 2 implementations are Orion
> and WebLogic.
> I definitely prefer Orion's development environment, but there is no
> comparison in terms of support (and I mean free support; WebLogic staff
> developers routinely answer newsgroup questions and once, in response to a
> bug I submitted concerning compound primary keys, a WL developer not only
> identified himself as the one working on the problem, but asked me if I
> thought his proposed solution was acceptable. Wow.)
> Reid
>
> ----- Original Message -----
> From: "Ray Harrison" <[EMAIL PROTECTED]>
> To: "Orion-Interest" <[EMAIL PROTECTED]>
> Sent: Thursday, April 05, 2001 6:47 PM
> Subject: Re: Bi-directional relations (my kludge)
>
>
> > Hi Reid -
> > What App Servers currently offer m-n relationships - I'm interested in
> exploring how some of them
> > operate.
> >
> > Cheers
> > Ray
> > --- Reid Hartenbower <[EMAIL PROTECTED]> wrote:
> > > I have found the lack of bi-directional support very frustrating, and
> think
> > > that it so impedes CMP functionality that it should be qualified as a
> bug,
> > > and not a pending feature.
> > >
> > > I also don't see what the big technical challenge in implementing it
> would
> > > be.
> > > If Orion is going to be this sluggish with support and new features, I
> would
> > > ask them to consider going open source. Let me fix it if you won't--do
> you
> > > hear me Orion guys?
> > >
> > > My workaround is to manage the relations with a 'RelationManager'
> session
> > > bean. For n-m relations, I create my join tables with composite primary
> > > keys, as in (for hsql):
> > >
> > > CREATE TABLE User_Order (
> > > userId CHAR(37) NOT NULL,
> > > orderId CHAR(37) NOT NULL,
> > > PRIMARY KEY (userId, orderId));
> > >
> > >
> > > Then in the session bean, I explicitly create both sides of the
> relationship
> > > (eg. user.addOrder(order) and order.addUser(user) ) and catch the
> duplicate
> > > key exception, as in:
> > >
> > > user.addOrder(order);
> > > if(NON_DIRECTIONAL_BUG) {
> > > try {
> > > order.addUser(user);
> > > }
> > > catch(EJBException e) {
> > > // for Orion 1.4.7 bidirectional bug;
> > > }
> > > }
> > >
> > > When (if) Orion fixes this bug, the modifications to my code will be
> slight.
> > >
> > > ----- Original Message -----
> > > From: "Ray Harrison" <[EMAIL PROTECTED]>
> > > To: "Orion-Interest" <[EMAIL PROTECTED]>
> > > Sent: Thursday, April 05, 2001 10:50 AM
> > > Subject: Re: Bi-directional relations
> > >
> > >
> > > > Nope.
> > > > --- Patrik Andersson <[EMAIL PROTECTED]> wrote:
> > > > > Does bi-directional relations work yet? I'm pretty sure it did not
> work
> > > the
> > > > > last time I tried, but that was a fix fix versions ago.
> > > > >
> > > > > Any news on this issue?
> > > > >
> > > > > regards,
> > > > > Patrik Andersson
> > > > >
> > > >
> > > >
> > > > __________________________________________________
> > > > Do You Yahoo!?
> > > > Get email at your own domain with Yahoo! Mail.
> > > > http://personal.mail.yahoo.com/
> > > >
> > > >
> > >
> > >
> > >
> >
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Get email at your own domain with Yahoo! Mail.
> > http://personal.mail.yahoo.com/
> >
> >
>
>
>
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