geronimo-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "A.L." <urkb1...@bk.ru>
Subject Re: EJB 2.1 CMR Question
Date Wed, 07 Nov 2007 14:18:23 GMT

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 <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?
>>
>>
>>
>>
> 
> 

-- 
View this message in context: http://www.nabble.com/EJB-2.1-CMR-Question-tf4361086s134.html#a13627832
Sent from the Apache Geronimo - Users mailing list archive at Nabble.com.


Mime
View raw message