class ProductCartService extends WebService {

   @PreAuthorize("hasRole('ROLE_DOWNLOAD')")
   @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
   public List<Product> getProductsOfCart(String uuid, int skip, int top)
         throws UserNotExistingException
   {
      return productCartDao.scrollCartOfUser(getUser(uuid), skip, top);
   }

}