Neos\Flow\Persistence\Doctrine\Query::count PHP Метод

    public function count()
    {
        try {
            $originalQuery = $this->queryBuilder->getQuery();
            $dqlQuery = clone $originalQuery;
            $dqlQuery->setParameters($originalQuery->getParameters());
            $dqlQuery->setHint(\Doctrine\ORM\Query::HINT_CUSTOM_TREE_WALKERS, [CountWalker::class]);
            $offset = $dqlQuery->getFirstResult();
            $limit = $dqlQuery->getMaxResults();
            if ($offset !== null) {
                $dqlQuery->setFirstResult(null);
            }
            $numberOfResults = (int) $dqlQuery->getSingleScalarResult();
            if ($offset !== null) {
                $numberOfResults = max(0, $numberOfResults - $offset);
            }
            if ($limit !== null) {
                $numberOfResults = min($numberOfResults, $limit);
            }
            return $numberOfResults;
        } catch (\Doctrine\ORM\ORMException $ormException) {
            $this->systemLogger->logException($ormException);
            return 0;
        } catch (\PDOException $pdoException) {
            throw new Exception\DatabaseConnectionException($pdoException->getMessage(), $pdoException->getCode());
        }
    }

 /**
  * Returns the number of objects in the result
  *
  * @return integer The number of matching objects
  * @api
  */
 public function count()
 {
     if ($this->numberOfRows === null) {
         if (is_array($this->rows)) {
             $this->numberOfRows = count($this->rows);
         } else {
             $this->numberOfRows = $this->query->count();
         }
     }
     return $this->numberOfRows;
 }