From: Leandro J. Komosinski <leandro_at_inf.ufsc.br>
Date: Fri, 15 Feb 2008 18:19:42 -0200

  Hi,

    I think that I found a Toplink bug or I'm missing something about JPA:

Let classes A and B have an one-to-one required association:

@Entity
public class A {
   @Id
    @GeneratedValue(strategy=SEQUENCE)
    Long id;

   @OneToOne(cascade=CascadeType.ALL)
   @JoinColumn (nullable=false)
   B b;
}

@Entity
public class B {
   @Id
    Long id;
}

It's impossible for a B object to have the same id value of A object.

   The following session bean's method doesn't run:

public void test() {
    A a = new A();
    B b = new B();

    // a.id is null ok

    em.persist(a);
  
    // a.id still is null Is this correct?
   
    b.setId(a.getId()); // this will set b.id = null;
}

   If I change A's strategy to AUTO the method runs ok. The point is
precisely this: if i change strategy i must change the logic of my code.
Is this correct?

  Thanks,

   Leandro

-- 
|:| Prof. Leandro J. Komosinski
|:| Depto de Informática e Estatística
|:| Centro Tecnológico
|:| Universidade Federal de Santa Catarina
|:| -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.
|:| leandro_at_inf.ufsc.br
|:| http://www.inf.ufsc.br/~leandro
|:| fone: (48) 3721 7508