/**
* Dequeuet an URL
*
* @param string $name queue name, one of self::QUEUE_ constants
*
* @return string|null null if empty queue, else URL
*
* @throws \Exception if queue name is incorrect
*/
public function get($name)
{
$this->checkName($name);
// Get row with minimal id
$row = ORM::for_table(self::TABLE)->select_many('id', 'url')->where('name', $name)->order_by_asc('id')->find_one();
if (!$row) {
return null;
}
// Store and remove for the DB
$url = $row->url;
$row->delete();
return $url;
}
