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

Hibernate complains about an unknown mappedBy property when mapping a bidirectional OneToOne relation with a derived identifier ------------------------------------------------------------------------------------------------------------------------------- Key: HHH-5695 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5695 Project: Hibernate Core Issue Type: Bug Components: entity-manager Affects Versions: 3.5.0-Final, 3.5.1, 3.5.2, 3.5.3, 3.5.4, 3.6.0.Beta1, 3.6.0.Beta2, 3.5.5, 3.6.0.Beta3, 3.6.0.Beta4, 3.5.6, 3.6.0.CR1, 3.6.0.CR2, 3.6.0 Environment: Hibernate 3.5+, any database. Reporter: Pascal Thivent Assignee: Gail Badner Fix For: 3.6.1, 4.0.0.Alpha1 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.