EmployeeDAO.java 文件源码

/**
 * Find an Employee who is a user by is login.
 * @param login Login of the Employee.
 * @return The Employee with the matching login.
 */
public Employee findByLogin(String login) {
    EntityManager em = HibernateUtil.getEntityManagerFactory().createEntityManager();

    String hql = "from Employee where login = :login";
    Query query = em.createQuery(hql);
    query.setParameter("login", login);

    Employee employee = null;
    try {
         employee = (Employee) query.getSingleResult();
    } catch (NoResultException e) {
        e.printStackTrace();
    }

    em.close();

    return employee;
}