Hibernate 分页

public EmailBean[] findByPage(Date begin, Date end, String emailreference, int pageNo, final int pageSize, String status) throws AIException {
        List emails = new ArrayList();  

        try {
            Session s = getSessionFactory().getCurrentSession();  

            Criteria hcriteria = s.createCriteria(EmailBean.class);  

            if (begin != null && end != null) {
                hcriteria.add(Restrictions.between("creation", begin, end));
            }  

            if (emailreference != null && !emailreference.isEmpty()) {
                hcriteria.add(Restrictions.ilike("mailName", emailreference));
            }  

            if (status != null && !status.isEmpty()) {
                hcriteria.createAlias("status", "s");
                hcriteria.add(Restrictions.eq("s.statusname", status));
            }
            //Total record number
            int totalCount = ((Integer) hcriteria.setProjection(Projections.rowCount()).uniqueResult()).intValue();
            hcriteria.setProjection( null );  

            hcriteria.addOrder(Order.desc("creation")).setFirstResult((pageNo - 1)*pageSize).setMaxResults(pageSize);  

            emails = hcriteria.list();
            Hibernate.initialize(emails);
        } catch (Exception e) {
            _logger.error(e.fillInStackTrace());
            throw new AIException("Error when retrieving emails");
        }  

        return emails.toArray(new EmailBean[emails.size()]);
    }