龙目岛和泛化

Question

我有两个班级。一个通用的抽象父类和一个扩展这个父类的子类。

@Setter
@Getter
public abstract class JPAEntity {

    @Id
    @GeneratedValue(generator = "uuid2")
    @GenericGenerator(name = "uuid2", strategy = "org.hibernate.id.UUIDGenerator")
    @Column(name = "uuid", columnDefinition = "CHAR(36)")
    private String uuid;

    @NonNull
    @Column(name = "update_date")
    private Date updateDate;

    @NonNull
    @Column(name = "creation_date")
    private Date creationDate;

}

@Entity
@Table(name = "doc_document")
@EntityListeners(AuditingEntityListener.class)
@Setter
@Getter
public class Document extends JPAEntity {

    @NonNull
    @Column(name = "name", length=200)
    private String name;

    @Column(name = "status", length=50)
    private String status;

}

但是 - Document 类上没有父方法 - 比如 getUuid()。 我做错了什么？