Question

如何将单个Address类映射到Customer和Employee类？

我有一个基类BaseModel，继承了User类的一些属性。

@MappedSuperclass
public class BaseModel implements Serializable{

    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "id", updatable = false, nullable = false)
    private Long id;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "createdOn")
    private Date createdOn;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "modifyOn")
    private Date modifyOn;
// getters and setters
}

//扩展BaseModel以将其属性继承到User

@MappedSuperclass
    public class User extends BaseModel {
    private static final long serialVersionUID = 1L;

        private String firstName;

        private String lastName;

        private String email;

        private String mobileno;

        private String username;

        private String password;

        @OneToMany(mappedBy="user", fetch=FetchType.EAGER)
        @Fetch(FetchMode.SUBSELECT)
        private List<Address> address;
    //getters and setters
    }

//这里扩展User类继承Customer和Employee类中的所有属性。

@Entity
@Table(name="Customer")
public class Customer extends User {
//
}

@Entity
@Table(name="Employee")
public class Employee extends User {
//
}

//这里是例外

org.hibernate.AnnotationException：in.silversun.bean.Address.user上的@OneToOne或@ManyToOne引用了一个未知实体：

我的第一个困惑是，它是多重继承吗？

如果没有，是否可以这样做？如果是，我该如何实现它。非常感谢帮助。谢谢。

如何将单个Address类映射到Customer和Employee类？

0 个答案: