Hi,
The problem isn't that the constraint isn't being applied - it is, and it's
working fine. The problem is that we can't catch the exception gracefully.
For example:
1) Create a user named 'bob'
2) Create another user also called 'bob'
This generates an exception - which is fine. The 'Caused by' will be
java.sql.SQLException: Duplicate entry 'bob' for key 2. I can catch the
Exception in the Stateless Session Bean which is creating the user Entity Beans
(org.hibernate.exception.ConstraintViolationException), but this doesn't stop
the bubble of the Exception. I next get the following in my log:
ERROR [AssertionFailure] an assertion failure occured (this may indicate a bug
in Hibernate, but is more likely due to unsafe use of the session)
For example, If a Stateless Session Bean looks like this:
|
| public boolean addUser(String username) {
| try {
| User newUser = new User(username);
| em.persist(newUser);
| return true;
| } catch (Exception e) {
| /* Ignore exception */
| return false;
| }
| }
|
i would expect the method to return false in the event of a duplicate key
insert...and that be the end of it. But, what actually happens is a the
AssertionFailure exception.
My guess is this is something to do with the underlying Hibernate session.
What I'd like to do is stop the AssertionFailure exception from occuring.
Any help or ideas would be appreciated
Thanks,
Jason
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