Aleksei,
There may be more than 1 @Id annotation if the entity defines @IdClass on it.
Regards,
-marina
Aleksei Valikov wrote:
> Hi,
>
> I am looking for a generic way to retrieve an id of the entity which
> was previously persisted with the given entity manager. It seems like
> JPA does not provide such functionality - or am I missing something?
>
> I need this to be really generic - I don't know exact entity classes,
> I don't know if they follow any conventions about ids, I don't know if
> ids are assigned or auto generated.
>
> The best solution I come up with is the following:
>
> * If the entity is annotated, check @Id and @EmbeddedId annotations
> * Otherwise, try using proprietary APIs of known entity managers like Hibernate
>
> I've attached what I've written so far. Is there a more standard way
> to get an id of the entity?
>
> Bye.
> /lexi