JPA and recursive query.

[binle]

I have a entity:
@Entity
public class Person implements Serializable {

private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private long id;
private String name;
private long idPersonParentt;
.....
}

please tell me how to use JPA to get all person to be children of one.
(i need use JPA to process. i was process in SQL but in JPA not process )

Thank for reading.