Question

I have a person table that contains the following fields:

id, 姓名,亲子。

the parent_id is actually a FK for column id. the data should look like this (Like a pyramid):

"id"   "name"                  "parent_id"

"1"    "I am the Top Father"   "1"
"2"    "My Father Is 1"        "1"
"3"    "My Father Is 2"        "2"
"4"    "My Father Is 2"        "2"

我的爱护者如何看待?

增编

Answer 1

@Entity
@Table(name="persons")
public class Person {

    @Id
    private Long id;
    private String name;

    @ManyToOne
    @JoinColumn(name="parent_id")
    private Person parent;

    ...

}

查阅。

友情链接