请教Hibernate JPA 单表一对一双向关联配置

public class Person {    private Integer id;    private String username;    @OneToOne    @JoinColumn(name = "otherId")    private Person other;

Person a=new Person;a.setUsername("A");Person b= new Person;b.setUsername("B");a.setOther(b);b.setOther(a);sess.save(a);sess.save(b);