Mapping Employee to Manager in Hibernate doing a self join

I have a table containing primary key and foreign key that references same table. How can I implement this mapping in hibernate... structure of tables is as follows..

Dept (

  deptno pk,

  dname,

  location

)



employee (

  empid pk,

  ename,

  Manager Id Foregin key references Employee(empid),

  deptno Foregin key references dept(deptno),

  doj date,

)

if the relation is bidirectional, you could have something like this:

          
@Entity
 
public class Employee implements Serializable {
 
    private Long empid;
 
    private String ename;
 
    private Employee manager;
 
    private Set<Employee> employees = new HashSet<Employee>();
 
    private Dept deptno;
 
    private Date doj;
 


 
    @Id
 
    @GeneratedValue
 
    public Long getEmpid() {
 
        return empid;
 
    }
 


 
    public void setEmpid(Long empid) {
 
        this.empid = empid;
 
    }
 


 
    @ManyToOne
 
    public Employee getManager() {
 
        return manager;
 
    }
 


 
    public void setManager(Employee manager) {
 
        this.manager = manager;
 
    }
 


 
    @OneToMany(mappedBy = "manager")
 
    public Set<Employee> getEmployees() {
 
        return employees;
 
    }
 


 
    public void setEmployees(Set<Employee> employees) {
 
        this.employees = employees;
 
    }
 


 
    @ManyToOne
 
    public Dept getDeptno() {
 
        return deptno;
 
    }
 


 
    public void setDeptno(Dept deptno) {
 
        this.deptno = deptno;
 
    }
 


 
    // ...
 
}
 
Nothing fancy for Dept:
 
@Entity
 
public class Dept implements Serializable {
 
    private Long deptno;
 
    private String dname;
 
    private String location;
 


 
    @Id
 
    @GeneratedValue
 
    public Long getDeptno() {
 
        return deptno;
 
    }
 


 
    public void setDeptno(Long deptno) {
 
        this.deptno = deptno;
 
    }
 


 
    // ...
 
}