private static function getMailingJobs($params)
 {
     if (is_array(static::$jobs)) {
         return static::$jobs;
     }
     static::$jobs = array();
     if (empty($params['crm_mailing_id'])) {
         return static::$jobs;
     }
     $jobBao = new CRM_Mailing_BAO_MailingJob();
     // This needs to be done as there can only be one query per DAO (see docs for reset()) - without this, the DAO
     // object was keeping residual data from previous operations elsewhere on the same DAO, making the below operations
     // unpredictable and fail
     $jobBao->reset();
     // This is needed as the reset() above clears the query completely
     $jobBao->selectAdd('*');
     $jobBao->mailing_id = $params['crm_mailing_id'];
     $jobBao->is_test = 0;
     if ($jobBao->find()) {
         while ($jobBao->fetch()) {
             static::$jobs[] = $jobBao->toArray();
         }
     }
     $jobBao->free();
     return static::$jobs;
 }