如何为自引用表创建Hibernate映射

Question

null

帮我处理一下这种情况吧。谢谢你。

Answer 1

您可以在employee类中有对manager的引用。

实体如下所示：

@Entity
@Table(name="EMPLOYEE")
public class Employee {

    @Id
    @Column(name="EMPLOYEE_ID")
    @GeneratedValue
    private Long employeeId;

    @Column(name="FIRSTNAME")
    private String firstname;

    @Column(name="LASTNAME")
    private String lastname;

    @ManyToOne(cascade={CascadeType.ALL})
    @JoinColumn(name="manager_id")
    private Employee manager;

    @OneToMany(mappedBy="manager")
    private Set<employee> subordinates = new HashSet<employee>();

    public Employee() {
    }

    public Employee(String firstname, String lastname) {
        this.firstname = firstname;
        this.lastname = lastname;
    }

    // Getter and Setter methods
}

有关完整示例,请参阅此链接：