Foreign key to entity id instead of entity

Hibernate ORM
5

Thanks for your answer. I guess I found another way:

@Entity
public class B   {
  private @Id @GeneratedValue Long id;
  private @Transient Long a_id;
  private @JsonbTransient @ManyToOne @JoinColumn(name = "a_id") A a;
  ...
}

This makes my code a bit more complex b/c of the necessary mapping between the fields, but OTOH nothing changes for the caller.