public function clear($uri)
    {
        try {
            $this->splitURI($uri);
            unset($this->pclasses);
            $this->connect();

            mysql_query(
                "DELETE FROM `{$this->dbName}`.`{$this->dbTable}`",
                $this->link
            );
        } catch(Exception $e) {
            throw new Klarna_DatabaseException(
                $e->getMessage(), $e->getCode()
            );
        }
    }