[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5695) Hibernate complains about an unknown mappedBy property when mapping a bidirectional OneToOne relation with a derived identifier

[Pascal Thivent (JIRA)]

Hibernate complains about an unknown mappedBy property when mapping a bidirectional OneToOne relation with a derived identifier
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                 Key: HHH-5695
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5695
             Project: Hibernate Core
          Issue Type: Bug
          Components: entity-manager
    Affects Versions: 3.6.0, 3.6.0.CR2, 3.6.0.CR1, 3.5.6, 3.6.0.Beta4, 3.6.0.Beta3, 3.5.5, 3.6.0.Beta2, 3.6.0.Beta1, 3.5.4, 3.5.3, 3.5.2, 3.5.1, 3.5.0-Final
         Environment: Hibernate 3.5+, any database.
            Reporter: Pascal Thivent
         Attachments: HHH-5695.zip

I have a OneToOne mapping between Foo and Bar where Bar uses a derived identifier. So Bar is the "dependent" entity and has a single primary key attribute which is mapped by the relationship attribute (i.e. using `Id` on the `OneToOne` relationship).

Foo is mapped like this:
  
{code}
@Entity
public class Foo {
    @Id @GeneratedValue
    private Long id;

    private String name;

    @OneToOne(mappedBy="foo", cascade=CascadeType.ALL)
    private Bar bar;

    public Long getId() {
        return id;
    }
    //...
}
{code}

and Bar:

{code}
@Entity
public class Bar {
    @Id
    @OneToOne
    @JoinColumn(name="BAR_ID")
    private Foo foo;

    //...
}
{code}

This mapping is described in the section 2.4.1.2 of the JPA 2.0 specification, Example 4, case (a) and works with the RI (run {{mvn test -Peclipselink,h2}} on the attached project).

However, Hibernate fails to initialize and complains about the mappedBy attribute:

{code}
Caused by: org.hibernate.AnnotationException: Unknown mappedBy in: com.acme.Foo.bar, referenced property unknown: com.acme.Bar.foo
	at org.hibernate.cfg.OneToOneSecondPass.doSecondPass(OneToOneSecondPass.java:159)
	at org.hibernate.cfg.Configuration.originalSecondPassCompile(Configuration.java:1686)
	at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1393)
	at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1345)
	at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1477)
	at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:193)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:1096)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:278)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:362)
	... 24 more
{code}

Run {{mvn test}} to reproduce.

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