/**
* @param String $campaignId
* @return NULL|Pap_Common_Campaign
*/
public static function getCampaignById($campaignId) {
if($campaignId == '') {
return null;
}
$campaign = new Pap_Common_Campaign();
$campaign->setPrimaryKeyValue($campaignId);
try {
$campaign->load();
} catch (Gpf_DbEngine_NoRowException $e) {
return null;
}
return $campaign;
}