The @ManyTOne (javax.persistence.ManyToOne) annotation that comes with ejb3-persistence.jar does not contain a declaration for mappedBy attribute.

Using: Hibernate Annotations 3.1beta7 and Entity Manager 3.1beta5

Where do I get a correct Version? Can I safely use other ejb3 Jars (where to find)?

Thanks,
Frank

Well, probably I'm wrong, but no mappedBy attribute is provisioned for @ManyToOne in the ejb3 spec.

The mappedBy attribute is available with the @ManyToOne's counterpart: @OneToMany.

You probably want to specify the mapped column in the class by an @JoinColumn(name = "asdads").

Yes, after browsing the EJB3 Spec I did not find it. I was a bit mislead by the example in Hibernate Annotations reference (Chapter 2.2.5.3.3. Many-to-many) where:

@Entity
public class Employee implements Serializable {
@ManyToMany(
cascade={CascadeType.CREATE, CascadeType.MERGE},
mappedBy="employees"
targetEntity=Employer.class
)
public Collection getEmployers() {
return employers;
}
}

was published as bidirectional ManyToMany.