public function getImpact()
    {
        if (!$this->impact) {
            $this->impact = 0;
            foreach ($this->filters as $filter) {
                $this->impact += $filter->getImpact();
            }
        }

        return $this->impact;
    }
public function getImpact()
    {
        if (!$this->impact) {
            $this->impact = 0;
            foreach ($this->filters as $filter) {
                $this->impact += $filter->getImpact();
            }
        }

        return $this->impact;
    }
public function getImpact ( ) { if ( ! $ this -> impact ) { $ this -> impact = 0 ; foreach ( $ this -> filters as $ filter ) { $ this -> impact += $ filter -> getImpact ( ) ; } } return $ this -> impact ; }
Returns calculated impact

@return integer
Returns calculated impact