3:17 a.m.
Hi,
I just ran the test case, and there's something odd indeed: as Florian
said, @MapKeyJoinColumn in embeddables seem to be completely ignored when
the (embedded) association is overridden using @AssociationOverride. When
not using @AssociationOverride, everything works fine.
Vlad, do you think this could be a bug? It seems odd, but maybe I'm missing
something.
I forked the test to make it run on an embedded H2 instance, which should
be easier to run quickly: https://github.com/yrodiere/hibernate-test-case
Yoann Rodière <yoann(a)hibernate.org>
Hibernate NoORM Team
On 23 November 2016 at 17:09, Florian Lacreuse <florian.lacreuse(a)smile.fr>
wrote:
We didn't know about the JPA spec on this particular detail,
thanks for
the precision.
Nonetheless, we don't want to override the @MapKeyJoinColumn, we just
want the annotation to be taken into consideration while we use
@AssociationOverride to override something else.
We have updated the test case
(https://github.com/florianlacreuse/hibernate-test-case
<https://github.com/florianlacreuse/hibernate-test-case>). In Employee
entity we use the same embeddable twice, so we have to use
@AssociationOverride to name the two join tables. In both tables, the
column related to the key has the default name ("experiences_KEY")
instead of the one provided by the @MapKeyJoinColumn ("jobtitle_id").
To resume, we understrand that it's not possible to override
@MapKeyJoinColumn but @MapKeyJoinColumn should not be ignored.
In Employee entity you can also find a third attribute with the same
embeddable but without any @AssociationOverride. In this case,
@MapKeyJoinColumn works as expected.
Kind regards,
Logo <http://www.smile.fr/>
151 boulevard Stalingrad
69100 Villeurbanne
www.smile.fr <http://www.smile.fr/>
*Florian LACREUSE*
Ingénieur d'études et développement
Pôle Développement Spécifique Java
Open Wide - Systèmes d'Information
Email : florian.lacreuse(a)smile.fr <mailto:florian.lacreuse@smile.fr>
Le 23/11/2016 à 16:08, Vlad Mihalcea a écrit :
> The JPA spec does not specify a way to override the MapKeyJoinColumn.
> You can override the association, like the JoinColumn for a ManyToOne
> or a JoinTable for OneToMany.
>
> In your case, maybe it's better to move that association out of the
> embeddable.
> It's always a good idea to keep the model as simple as possible.
>
> Vlad
>
> On Wed, Nov 23, 2016 at 4:10 PM, Florian Lacreuse
> <florian.lacreuse(a)smile.fr <mailto:florian.lacreuse@smile.fr>> wrote:
>
> Hi,
>
> We have a problem using @AssociationOverride and @MapKeyJoinColumn
and
> we would like to have your opinion about this to know if this is
> an issue.
>
> Here is the test case :
> https://github.com/florianlacreuse/hibernate-test-case
> <https://github.com/florianlacreuse/hibernate-test-case>
>
> Short explanation about the model : an entity with an embeddable
field
> wrapping a map with an entity as key and a basic type as value.
>
> We use @AssociationOverride to rename the join table (annotation on
> embeddable field) and @MapKeyJoinColumn to rename the column
> related to
> the key map (annotation on map field).
>
> Unfortunately, it would seem that the @MapKeyJoinColumn annotation is
> ignored. @AssociationOverride may override any other annotations
> on the
> map field ? In this case how to rename the column related to the
> key map
> with the @AssociationOverride ?
>
> Is this an issue or is there any trick we don't know about?
>
> Thanks for your help.
>
> Kind regards,
>
>
> Logo <http://www.smile.fr/>
>
> 151 boulevard Stalingrad
> 69100 Villeurbanne
> www.smile.fr <http://www.smile.fr> <http://www.smile.fr/>
> *Florian LACREUSE*
> Ingénieur d'études et développement
> Pôle Développement Spécifique Java
> Open Wide - Systèmes d'Information
> Email : florian.lacreuse(a)smile.fr
> <mailto:florian.lacreuse@smile.fr>
> <mailto:florian.lacreuse@smile.fr <mailto:florian.lacreuse@smile.fr
>>
>
>
> _______________________________________________
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