Eclipse Community Forums: EclipseLink » can't create a new object

Home

Home » Eclipse Projects » EclipseLink » can't create a new object(is it a bug?)

can't create a new object [message #651481]

Mon, 31 January 2011 05:41

Eclipse User

hi all

first, sorry about my english Embarrassed

i don't know if its a bug or not, but here's my problem: ig have these three classes:

Cliente: http://pastie.org/1501994 (yes, cliente has id, but is not shown)
GrupoTelefone: http://pastie.org/1501995
Telefone: http://pastie.org/1501996

when i try to save a NEW 'cliente', eclipselink says that the fields to insert on grupotelefone table is null..so, looking at the grupotelefone table, it has only an Id, which is referenced in other tables...but, being a new grupotelefone, he hasn't id (the database generates a new one) and this way, all the fields (only id) is null...
is there a configuration to disable this verification or something like?
thanks in advice

Re: can't create a new object [message #651500 is a reply to message #651481]

Mon, 31 January 2011 08:02

Eclipse User

Hello,

I cannot see any obvious issues with the entities, other than using cascade.persist with cascade.all unneccessarily. Calling grupotelefone_id = new GrupoTelefone(); within ClienteFornecedor might cause extra GrupoTelefone entities to be persisted, but I'm not sure its related to this problem.

Can you post the code you are using to persist and commit these entities, as well as the log with the <property name="eclipselink.logging.level" value="FINEST"/> property set?

Best Regards,
Chris

Re: can't create a new object [message #651513 is a reply to message #651500]

Mon, 31 January 2011 08:57

Eclipse User

here is how i persist:
http://pastie.org/1514673
i persist with saveOrUpdate method (not the persistEntity!)
but call new GrupoTelefone didn't cause any extra entities persisted.

here's my configuration of entityManager: http://pastie.org/1514676

Re: can't create a new object [message #651545 is a reply to message #651481]

Mon, 31 January 2011 10:44

Eclipse User

I'm not sure it is possible to insert into a table with no columns in it, other than a generated id. Perhaps add another field, or do not use IDENTITY id generation, use TABLE or SEQUENCE instead.

I checked, and on MySQL at least an empty insert is possible with an identity column, so I think you are correct, and we should not be throwing this error. Please log a bug for this and vote for it.

Re: can't create a new object [message #651584 is a reply to message #651545]

Mon, 31 January 2011 12:57

Eclipse User

edit: https://bugs.eclipse.org/bugs/show_bug.cgi?id=335885

[Updated on: Mon, 31 January 2011 13:03] by Moderator

Previous Topic:	Multiple Mapping-Files in PersistenceUnit
Next Topic:	stale data refreshed after a size()?

Goto Forum:

-=] Back to Top [=-

Current Time: Wed Jul 02 23:57:30 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter