/**
* If flag to use walker not set manually we try to figure out if it will not brake query logic
*
* @param Query|SqlQuery $query
*
* @return bool
*/
private function useWalker($query)
{
if ($query instanceof Query) {
if (null === $this->shouldUseWalker) {
return !$query->contains('GROUP BY') && null === $query->getMaxResults();
}
return $this->shouldUseWalker;
}
return false;
}