我有一个父类Person，两个子类RoleA和RoleB，RoleA下可以有多个RoleB，反之亦然，我的目标是让一个人同时拥有两个角色。

但是，休眠状态会引发WrongClassException。据我了解，一个Person对象被强制转换为RoleA，并且不能同时成为RoleB。请告诉我一些修复/解决方法，谢谢！

PS：我在role_a和role_b表中都有人ID 2

@Entity
@Inheritance(strategy = InheritanceType.JOINED)
@Table(name = "person")
public class Person implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "user_id")
    protected Long id;
}



@Entity
@Table(name = "role_a")
@PrimaryKeyJoinColumn(name = "role_a_id")
public class RoleA extends Person implements Serializable {

    @ManyToMany
    @JoinTable(
name = "role_a_b_join",joinColumns = @JoinColumn(name = "role_a_id",columnDefinition = 
"bigint(20)"),inverseJoinColumns = @JoinColumn(name = "role_b_id",columnDefinition = "bigint(20)"))
    private Set<RoleB> roleB;
}



@Entity
@Table(name = "role_b")
@PrimaryKeyJoinColumn(name = "role_b_id")
public class RoleB extends Person implements Serializable {

    @ManyToMany(mappedBy = "roleB")
    private Set<RoleA> roleA;
}

错误堆栈跟踪：

org.hibernate.WrongClassException: Object [id=2] was not of the specified 
subclass [RoleB] : loaded object was of wrong class class RoleA