function ProductApp( $upload_path = '', $file_name = '' ) {
        $this->table = TB_PRODUCT;
        $this->upload_path = $upload_path == '' ? '../'.upload_path : $upload_path;
        $this->file_name = $file_name == '' ? 'product_photo-' : $file_name;
        $this->width_s = 133;
        $this->extension = array('jpg');
        parent :: SQL();
        parent :: commandTable($this->table);
    }