/**
* Returns the first object in the result set, if any.
*
* @return mixed The first object of the result set or NULL if the result set was empty
* @api
*/
public function getFirst()
{
if (is_array($this->queryResult)) {
$queryResult =& $this->queryResult;
} else {
$query = clone $this->query;
$query->setLimit(1);
$queryResult = $this->dataMapper->mapToObjects($this->persistenceManager->getObjectDataByQuery($query));
}
return isset($queryResult[0]) ? $queryResult[0] : null;
}