@Override
 public List<Product> updateproductmaindetails(
     String productcode,
     String brand,
     String productname,
     String categorycode,
     String barcode,
     String unitquantity,
     String packquantity,
     String retailprice,
     String discount,
     String packweight,
     String packmass,
     String compareweight,
     String comparemass,
     String gst)
     throws Exception {
   return productDao.updateproductmaindetails(
       productcode,
       brand,
       productname,
       categorycode,
       barcode,
       unitquantity,
       packquantity,
       retailprice,
       discount,
       packweight,
       packmass,
       compareweight,
       comparemass,
       gst);
 }