@SuppressWarnings("unchecked")
    @Override
    public StudentCredential getStudentDetailsByUnameAndPassword(String uname,String password){
        Session session;
        DetachedCriteria detachedCriteria =  DetachedCriteria.forClass(StudentCredential.class);
        detachedCriteria.add(Restrictions.eq("uname", uname));
        detachedCriteria.add(Restrictions.eq("password", password));
        List<StudentCredential> findByCriteria = (List<StudentCredential>)session.getIdentifier(detachedCriteria);
        if(findByCriteria !=null && findByCriteria.size()>0)
        return findByCriteria.get(0);
        else
            return null;
    }