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Posted to user@geronimo.apache.org by David Carew <dc...@gmail.com> on 2007/09/02 01:41:25 UTC
Re: EJB 2.1 CMR Question
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 <ma...@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 <ma...@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?
>
>
>
>
Re: EJB 2.1 CMR Question
Posted by "A.L." <ur...@bk.ru>.
Hi,
I have the same problem/same scenario.
<enforce-foreign-key-constraints> flag is set.
I use "PostCreate" to create dependent objects.
Sometimes my application works after restart, sometimes the SQL-Exception is
thrown.
Any ideas?
Regards,
Al.
David Carew wrote:
>
> 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 <ma...@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 <ma...@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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