SpringMVC 中实体类父子类关系设置

SpringMVC 中实体类父子类关系设置

父类:

@Entity
@Table(name="tbl_AlbumSuper")
@Inheritance(strategy=InheritanceType.SINGLE_TABLE)
public class AlbumSuperClass {
    @Id
    @Column(length = 32)
    @GeneratedValue(generator = "system-uuid")
    @GenericGenerator(strategy = "uuid", name = "system-uuid")
    private String strID;   
    @Column
    private String strName;   
}

子类:

@Entity
public class VideoAlbum extends AlbumSuperClass{
         //写一些子类特有的属性，如：
　 @OneToMany(fetch=FetchType.EAGER)
    @JoinColumn(name="FK_album_ID")
    private Set<Video> videoSet;  
}





Video实体中专辑对象为父类对象
@ManyToOne(cascade=CascadeType.ALL)

@JoinColumn(name = "FK_album_ID")

private AlbumSuperClass beanSuperAlbum;