Class ShoppingCartDTO

java.lang.Object

com.goldenleaf.shop.dto.ShoppingCartDTO

public class ShoppingCartDTO
extends Object

Data Transfer Object representing a customer's shopping cart.

Used in:

• GET /api/cart — returning current cart state
• Mini-cart widget in header
• Checkout page — final review before order
• Service layer → controller communication

Important:

• totalPrice is calculated server-side — never trust client input!
• customerId is derived from authentication context — not accepted from client
• List of items is returned as unmodifiable to prevent external modification

Since:

1.0

Constructor Summary

Constructors

Constructor	Description
ShoppingCartDTO()	Required for JSON deserialization
ShoppingCartDTO(Long id, Long customerId, List<ShoppingItemDTO> items, double totalPrice)

Method Summary

Modifier and Type	Method	Description
Long	getCustomerId()
Long	getId()
List<ShoppingItemDTO>	getItems()	Returns an unmodifiable view of cart items.
double	getTotalPrice()
void	setCustomerId(Long customerId)
void	setId(Long id)
void	setItems(List<ShoppingItemDTO> items)
void	setTotalPrice(double totalPrice)	Total price is calculated on the server.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

ShoppingCartDTO

public ShoppingCartDTO()

Required for JSON deserialization

ShoppingCartDTO

public ShoppingCartDTO(Long id,
 Long customerId,
 List<ShoppingItemDTO> items,
 double totalPrice)

Method Details

getId

public Long getId()

setId

public void setId(Long id)

getCustomerId

public Long getCustomerId()

setCustomerId

public void setCustomerId(Long customerId)

getItems

public List<ShoppingItemDTO> getItems()

Returns an unmodifiable view of cart items. Ensures external code cannot modify the list after DTO creation.

setItems

public void setItems(List<ShoppingItemDTO> items)

getTotalPrice

public double getTotalPrice()

setTotalPrice

public void setTotalPrice(double totalPrice)

Total price is calculated on the server. This setter should only be used internally or in mapping.

toString

public String toString()

Overrides:

toString in class Object