java – 如何在同一个表中连接多个列？

这是学生班：

@Entity
public class Student {
    @Id
    Long id;
    String firstName;
    String lastName;
    Long accountId;

    @OneToOne(fetch=FetchType.EAGER)
    @JoinColumns({@JoinColumn(name="country",referencedColumnName = "name"),@JoinColumn(name="accountId",referencedColumnName = "accountId")}
    )
    PickList country;

    @OneToOne(fetch=FetchType.EAGER)
    @JoinColumns({@JoinColumn(name="state",referencedColumnName = "accountId")}
    )
    PickList state;
}

这是选项列表：

@Entity
@Table(name = "picklist",uniqueConstraints = {
    @UniqueConstraint(columnNames = {"accountId","name"})
})
public class PickList {
    @Id
    long id;

    long accountId;
    String name;
}

错误 –
?引起：org.hibernate.MappingException：实体映射中的重复列：column：accountid(应使用insert =“false”update =“false”映射)