Re: EntityExistsException

[Craig L Russell]

Hi Gul,






Thanks,

Craig

On Dec 2, 2007, at 8:32 AM, Gul Onural wrote:

The way I read the spec, these exceptions should be the top exception. That is, you should be able to } catch (EntityExistsException eeex) { and not have to catch Throwable and dive into the exception. If this is not the behavior you see, please raise a JIRA and attach a simple test case. And if you're so inclined, provide a patch for the issue.

see below. However, the OpenJPA buries these exceptions

how many times I need to catch throwable using ex.getCause().

Am I missing something ? All I am trying to find out is that if the
transaction is rolled back because of the fact that the entity already
exists
programmatically. Is there a way to deterministically find out this

exceptions
In OpenJPA?

Gul


EntityExistsException : Thrown by the persistence provider when
EntityManager.persist(Object) is called and the entity already exists.
EntityNotFoundException : Thrown by the persistence provider when an

accessed but the entity does not exist.
NonUniqueResultException : Thrown by the persistence provider when
getSingleResult() is executed on a query and there is more than one
result from the query.
NoResultException : Thrown by the persistence provider when
getSingleResult() is executed on a query and there is no result to
return.
OptimisticLockException : Thrown by the persistence provider when an
optimistic locking conflict occurs.

occurs.
RollbackException : Thrown by the persistence provider when the
EntityTransaction.commit() fails.

transaction is required but is not active.

The JPA Spec states defines five exceptions for JPA providers to raise, undeterministic number of levels of nested exceptions, i.e. not obvious programmatically, how many level deep I have to go to catch standard JPA entity reference obtained by EntityManager.getReference (Class,Object) is PersistenceException : Thrown by the persistence provider when a problem TransactionRequiredException : Thrown by the persistence provider when a

Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:[EMAIL PROTECTED]
P.S. A good JDO? O, Gasp!

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