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From "David Carew" <dcca...@gmail.com>
Subject Re: EJB 2.1 CMR Question
Date Sat, 01 Sep 2007 23:41:25 GMT
Check out  the  EJB section in Aaron Mulder's book here.
http://www.chariotsolutions.com/geronimo/geronimo-1.1/ejb-structure.html#id2594234
There's a element in the EJB deployment plan called
<enforce-foreign-key-constraints> that may be applicable to your scenario.


On 9/1/07, Mark Aufdencamp <mark@aufdencamp.com> wrote:
>
> I've done some more homework on my own regarding this one.
>
> It appears both JBoss and WebLogic have identified this issue and resolved
> it by allowing the containers Insert Transaction to be delayed until after
> the EJB PostCreate method.  This appears to be set in both flavors via a
> container configuration command.
>
> JBoss - <insert-after-ejb-post-create>true</insert-after-ejb-post-create>
> WebLogic -
> <delay-database-insert-until>ejbPostCreate</delay-database-insert-until>
>
> How can one configure Geroimo 1.1.1 to engage in similar behavior?
>
>
> -------- Original Message --------
> Subject: EJB 2.1 CMR Question
> From: Mark Aufdencamp <mark@aufdencamp.com>
> Date: Fri, August 31, 2007 12:14 pm
> To: user@geronimo.apache.org
>
> Hi All,
>
> I'm working on some CMR EJB's and had a more general question on EJB
> architecture rather than specifically with Geronimo's implementation.
>
> I have a pair of entity beans with a 1:M relationship.  I'm attempting to
> set the parent object with a CMR,
> setParentEntityLocal(ParentEntityLocal parent), on the many object during
> the creation of the many.  I've tried to do this in the PostCreate and the
> Create.
>
> Problem is the Foreign Key Column on the Child table has a NOT NULL
> constraint.  How does one typically deal with this?   Is it possible, or do
> I need to modify the DDL on the database?  Can the FK column be defined as a
> CMP and set without messing up the CMR field?
>
> I have the freedom to change the DDL, but was a bit curious how one would
> deal with this if they were working in a more structured environment where
> the DBA might not be so willing to change th DDL.
>
> Thanks, as always:)
>
> Mark Aufdencamp
> Mark@Aufdencamp.com
>
> BTW - I'm pretty close to migrating to Geronimo 2.0 (a couple of
> iterations).  How does this same scenario work out with JPA?
>
>
>
>

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