public function getRegPeriod($con = null) { include_once 'lib/model/om/BaseRegPeriodPeer.php'; if ($this->aRegPeriod === null && $this->reg_period_id !== null) { $this->aRegPeriod = RegPeriodPeer::retrieveByPK($this->reg_period_id, $con); } return $this->aRegPeriod; }