Re: [hibernate-dev] Use @AssociationOverride with @MapKeyJoinColumn
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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