Criteria
=====
Session session = ((HibernateEntityManagerFactory)entityManagerFactory).getSessionFactory().openSession();
      Criteria criteria = session.createCriteria(Department.class, "dept");
      criteria.createAlias("employees", "emp");
      //criteria.setFetchMode("employees", FetchMode.SELECT);
      criteria.add(Restrictions.eq("emp.empNo", 7459L));
      //criteria.setResultTransformer(criteria.DISTINCT_ROOT_ENTITY);
      return criteria.list();

HQL
====
select this_.DEPTNO as DEPTNO0_3_, this_.LOCATION_ID as LOCATION3_0_3_, this_.DNAME as DNAME0_3_, emp1_.EMPNO as EMPNO2_0_, emp1_.DEPTNO as DEPTNO2_0_, emp1_.ENAME as ENAME2_0_, emp1_.HIREDATE as HIREDATE2_0_, department4_.DEPTNO as DEPTNO0_1_, department4_.LOCATION_ID as LOCATION3_0_1_, department4_.DNAME as DNAME0_1_, location5_.LOCATION_ID as LOCATION1_1_2_, location5_.DESCRIPTION as DESCRIPT2_1_2_ from DEPT this_, EMP emp1_, DEPT department4_, LOCATION location5_ where this_.DEPTNO=emp1_.DEPTNO and emp1_.DEPTNO=department4_.DEPTNO(+) and department4_.LOCATION_ID=location5_.LOCATION_ID(+) and emp1_.EMPNO=?

Department Entity
public class Department {
   @Id
   @Column(name = "DEPTNO")
   private Long deptNo;

   @Column(name = "DNAME", nullable = false)
   private String name;

   @OneToMany(mappedBy = "department", cascade = { CascadeType.PERSIST,
         CascadeType.MERGE }, fetch= FetchType.EAGER)
         
   @Cascade( { org.hibernate.annotations.CascadeType.DELETE_ORPHAN })
   //@BatchSize(size = 1)
   private List<Employee> employees;
   
   @ManyToOne
   @JoinColumn(name = "LOCATION_ID", referencedColumnName = "LOCATION_ID")
   private Location location;

             // Getter and setter goes here


}

Employee Entity
public class Employee {
   @Column(name = "ENAME")
   private String empName;

   @Id
   @Column(name = "EMPNO", nullable = false)
   @GeneratedValue(strategy=GenerationType.AUTO,generator="EMPNO_SEQ")
   @SequenceGenerator(name="EMPNO_SEQ", sequenceName="EMP_SEQ")
   private Long empNo;

   @Column(name = "HIREDATE")
   private Date hireDate;

   public Date getHireDate() {
      
      return hireDate;
   }

   public void setHireDate(Date hireDate) {
      this.hireDate = hireDate;
   }

   @ManyToOne (fetch = FetchType.EAGER)
   @Cascade( { CascadeType.PERSIST, CascadeType.MERGE })
   @JoinColumn(name = "DEPTNO", referencedColumnName = "DEPTNO")
   private Department department;
             // Getter and setter goes here
}

Location Entity
public class Location {

   @Id
   @Column(name = "LOCATION_ID")
   private Long locationId;

   @Column(name = "DESCRIPTION")
   private String desc;

             // Getter and setter goes here
}