My opinion is that JOnAS should prevent creation of duplicate entities, but I think it
doesn't and I do not know what EJB
specs tell about this.
> Hi,
>
> I am developing an entity bean with CMP whose primary key is a String value.
> I want that the client get the DuplicateKeyException when it tries to create
> a bean instance with an existing primary key value.
>
> First I assumed that the container would call findByPrimaryKey() before
> calling ejbCreate(), which does not seem to be the case. Then I decided to
> try to find an existing instance in ejbCreate(), handle the FinderException
> and throw a DuplicateKeyException if an instance is found. This works but I
> don't know if it is the right way to do it or if it's just a hack?
>
> Your opinion about this?
>
> Regards,
> Samuel
>
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