Hibernate @JoinFormula

Question

I have two entities A and B.

 public class A{

    @Id
    @GeneratedValue
    private Integer id;

    private String uuid;

    ...
  }

T

Answer 1

The following works:

@ManyToOne
@JoinColumnsOrFormulas({
  @JoinColumnOrFormula(formula=@JoinFormula(value="(SELECT a.id FROM A a WHERE a.uuid = uuid)", referencedColumnName="id")),
  @JoinColumnOrFormula(column = @JoinColumn("uuidOfA", referencedColumnName="uuid"))
})
private A a;