长期交易？

Question

用户注册后，他通常会尝试登录，但他通常不能用拳头尝试，有时需要一些时间才能成功登录。所以，最重要的是：

    SessionFactory factory = HibernateUtil.getSessionFactory();
    Session hSession = factory.openSession();

    Transaction tx = null;
    List<UserTable> list1 = null;

    try {
        tx = hSession.beginTransaction();
        Criteria crit = hSession.createCriteria(UserTable.class).add(
                Restrictions.like("email", email));
        list1 = crit.list();
        tx.commit();
    } catch (Exception e) {
        e.printStackTrace();
        if (tx != null)
            tx.rollback();
    } finally {
        hSession.close();
    }

    // the 'if' is usualy 'true' after some time...
    if(list1.size() > 0) {
        String hash = null;
        try {
            hash = EncryptPassword.encryptPassword(password);
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }           
        if (list1.get(0).getPassword().equals(hash)) {
            session.put("email", email);
            log.info("login successful: " + email);
            return SUCCESS;
        } else {
            log.info(email + " - the deer does't remember password");
        }
    }

    addActionError(getText("error.login"));
    // the next warning usually happens twice or more
    log.warn("login error: " + email);
    return ERROR;

这是什么？一个长期运行的交易或其他什么？