/**
  * Sets the total row count for this paginator
  *
  * Can be either an integer, or a Doctrine\ORM\Query object
  * which returns the count
  *
  * @param Query|integer $rowCount
  * @return void
  */
 public function setRowCount($rowCount)
 {
     if ($rowCount instanceof Query) {
         $this->rowCount = $rowCount->getSingleScalarResult();
     } else {
         if (is_integer($rowCount)) {
             $this->rowCount = $rowCount;
         } else {
             throw new \InvalidArgumentException("Invalid row count");
         }
     }
 }