/** * return foreign keys and entity references * * @static * @access public * @return array of CRM_Core_Reference_Interface */ static function getReferenceColumns() { if (!self::$_links) { self::$_links = array(new CRM_Core_Reference_Basic(self::getTableName(), 'job_id', 'civicrm_hrjob', 'id'), new CRM_Core_Reference_Basic(self::getTableName(), 'provider', 'civicrm_contact', 'id'), new CRM_Core_Reference_Basic(self::getTableName(), 'provider_life_insurance', 'civicrm_contact', 'id')); } return self::$_links; }