[hibernate-dev] Default access type and MappedSuperclass

Guillaume Smet guillaume.smet at gmail.com
Thu Jan 10 06:51:40 EST 2019


The generated model of the MappedSuperclass?

Because the one of the subclass is correct for sure.

On Thu, Jan 10, 2019 at 12:44 PM andrea boriero <andrea at hibernate.org>
wrote:

> I'm not sure I have fully understood the issue, the @Id may be not defined
> in the MappedSuperclass but for sure it must be in the subclasses extending
> it.
>
> I have tried and I can reproduce the issue only if I do not specify
> any @Id annotation in the subclass, but as soon as I add the @Id to a
> subclass of the MappedSuperclass the generated static metamodel is correct.
>
>
> On Thu, 10 Jan 2019 at 11:04, Guillaume Smet <guillaume.smet at gmail.com>
> wrote:
>
>> Hi,
>>
>> We recently had this issue opened about us not choosing the right access
>> type for a mapped super class:
>> https://hibernate.atlassian.net/browse/HHH-12938 .
>>
>> Hibernate currently base the access type decision on the sole placement of
>> the @Id annotation, which, in the case of a @MappedSuperclass might not be
>> defined (this is the OP's case).
>>
>> I closed the issue explaining what we do and pointing a workaround but the
>> OP rightfully replied with the JPA spec saying "The default access type of
>> an entity hierarchy is determined by the placement of mapping annotations
>> on the attributes of the entity classes and mapped superclasses of the
>> entity hierarchy that do not explicitly specify an access type".
>>
>> I'm wondering if we should also consider the @Column annotations placement
>> if there is no @Id annotation.
>>
>> If the answer is that it's already fixed in 6, it's all good for me :).
>>
>> Thoughts?
>>
>> --
>> Guillaume
>> _______________________________________________
>> hibernate-dev mailing list
>> hibernate-dev at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/hibernate-dev
>>
>


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