protected function getCriteria()
    {
        $result = array();

        if($this->filters){
            $result['filters'] = $this->filters;
        }

        if($this->limit!==null){
            $result['limit'] = $this->limit;
        }

        if($this->order!==null){
            $result['order'] = $this->order;
        }

        if($this->page!==null){
            $result['page'] = $this->page;
        }

        return $result;
    }