changed OrderLineDto model and updated OrderServiceImpl

src/main/java/com/nisum/ecomorder/model/dto/OrderLineDto.java

@@ -4,7 +4,6 @@ import lombok.Data;
 
 import javax.validation.constraints.Min;
 import javax.validation.constraints.NotBlank;
-import javax.validation.constraints.NotNull;
 
 @Data
 public class OrderLineDto {
@@ -13,8 +12,4 @@ public class OrderLineDto {
     private String productId;
     @Min(value = 1, message = "quantity must be at least one")
     private int quantity;
-    private String productName;
-    @NotNull(message = "price can't be null")
-    @Min(value = 1, message = "price can't be negative")
-    private Double price;
 }

src/main/java/com/nisum/ecomorder/service/impl/OrderServiceImpl.java

@@ -47,6 +47,8 @@ public class OrderServiceImpl implements OrderService {
             String productId = orderLine.getProductId();
             Product product = productClient.getProductById(productId);
             if (product.getId() == null) throw new NotFoundException("product not found with ID: " + productId);
+            orderLine.setProductName(product.getName());
+            orderLine.setPrice(product.getPrice());
             orderLine.setSubTotal(product.getPrice() * orderLine.getQuantity());
         });
         order.setOrderTotal(order.getLineItems().stream().mapToDouble(OrderLine::getSubTotal).sum());