Hibernate uuid relational generator injection

Let's say I have the following objects:

@Entity
public class A {

    @Id
    @Type(type = "pg-uuid")
    @GeneratedValue(generator = "uuid")
    @GenericGenerator(name = "uuid", strategy = "uuid2")
    private UUID id;

    @OneToMany
    private List<B> bs;

    // other fields + getter and setter
}

      

        
        
        
      

    

and

@Entity
public class B {

    @Type(type = "pg-uuid")
    private UUID aId;

    // other fields + getter and setter
}

      

        
        
        
      

    

While creating an object A

(saving with JPA) that contains a list B

, is there a way to use A uuid generator

to populate the field aId

in B

? Or do I need to generate a uuid using UUID.randomUUID()

in java and then create objects A/B

?