Hi! I get an EntityNotFoundException from the EntityManager.find()-Method. I've the following DB structure:
:

Table "Order":
-id
-myClassId

Table "MyClasses":

-id

My POJOs look like:

Order
{
int id;
MyClass myClass;
}

MyClass
{
int id;
}

In case when no MyClass is defined for an Order, the field myClassId hat the Integer value 0 (not NULL).

When calling the find()-method Hibernate finds an order which has no MyClass difined (myClassId has the value 0). Hibernate tries to find a MyClass in the table MyClasses, finds nothing and throws an EntityNotFoundException. But I want to get an Order object with a null pointer in the variable myClass in such cases.

Which ways are there to achieve that? Thank you!

I've figured out how to solve the problem. There is a Hibernate annotation @org.hibernate.NotFound. Setting action = NotFoundAction.IGNORE makes Hibernate set a null pointer to myClass variable instead of throwing the EntityNotFoundException.

The funny thing about this story is when you have the action = NotFoundAction.Exception being set, Hibernate distinguishes between 2 cases:

1)FetchType.EAGER: The EntityNotFoundException is being thrown
2)FetchType.Lazy: myClass variable references an empty MyClass-object

Have anyone an idea why?

I've another question: I'm using java persistence api and i'd like to be undependant from the persistence provider. Has anyone an idea how to achieve that using by means of JPA (without using Hibernate annotation)?