/**
  * @see parent::store
  */
 function store()
 {
     if (!$this->_id) {
         $transf_rule = new CEAITransformationRule();
         $transf_rule->eai_transformation_ruleset_id = $this->eai_transformation_ruleset_id;
         $this->rank = $transf_rule->countMatchingList() + 1;
     }
     return parent::store();
 }