@JoinFormula and @OneToMany definition – poor documentation

Answer 1 :

@Size(max=10)
private List<Comment> commentList;

Answer 2 :(just example like that)

public class A{

    @Id
    @GeneratedValue
    private Integer id;

    private String uuid;

    ...
  }

other class

public class B{
      @Id 
      @GeneratedValue
      private Integer id;

      private String uuidOfA;



  @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;      
}