i don't get the problem.

you have an object with a field which is unique

than make the object, save it using a dao, catch the exception.
if it is something with unique constrain than you know...


tibi


Quoting Juan Antonio Calderón <juan....@tecnosfera.org>:

Is not an object "key", is a property in a model java class, an unique field
in the database :)

I have to try it, to know if there is a duplicate field.

Any other way? ;)

Thanks everybody.

2010/5/6 Dustin Pearce <dustin_pea...@yahoo.com>

Are you generating a random number for the object "key" and then seeing if
its already there and trying again...and again...?  Just curious.

-D

On May 5, 2010, at 7:17 PM, Juan Antonio Calderón wrote:

Maybe DataIntegrityViolationException could be used, like in
UserManagerImpl.java?

Thanks.

2010/5/6 Juan Antonio <juan....@tecnosfera.org>


Hello everybody.

I have a problem.

I generate a random field, that must be unique, and i need to catch the
exception thrown in the save() method in the DAO.

What is the exception thrown? Is an HibernateException, a
RuntimeException...?

I used to catch an ConstraintViolationException, could be this?

Thanks.
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