@Override
 @Transactional(readOnly = true)
 public List<PeriodBudget> findAssociatedToPeriod(Long periodId, Long userId) {
   return dao.findAssociatedToPeriod(periodId, userId);
 }
 @Override
 @Transactional(readOnly = true)
 public PeriodBudget getEntity(Long userId, Long periodId, Long budgetId) {
   return dao.getEntity(userId, periodId, budgetId);
 }