private String getEmailAddr(Bill bill) {
if (bill == null) return null;
String currName = bill.getCurrUserName();
if (!Util.isEmpty(currName)) {
List<User> list = billDao.getEntitiesByColumn(User.class, "name", currName);
if (list != null && list.size() > 0) return list.get(0).getEmail();
}
return null;
}
