Extension Point: Validate Shopping Item at Remove from Cart

Basics

Parameter	Value
Extension Point Key	VALIDATE_SHOPPING_ITEM_AT_REMOVE_FROM_CART
Extension Point Name	Validate Shopping Item at Remove from Cart
Extension Interface	ShoppingItemValidator
Supports Multiple Extensions?	Yes
Selector Type	Store
Available Since	1.0.0

Use Cases

Extensions implementing this Extension Point can enforce business rules that prevent items from being removed from the shopping cart.

Methods

validate

The validate method is invoked when an item is being removed from the shopping cart. In Cortex, this happens when a DELETE operation is executed against the shopping cart line entity. If one or more extensions returns StructuredErrorMessage objects, then a 400 BAD REQUEST response is returned, and the error message details are returned in the response body so that the shopper can understand why the item can’t be removed from the shopping cart.

Extension Sample

@Extension
@XPFAssignment(extensionPoint = XPFExtensionPointEnum.VALIDATE_SHOPPING_ITEM_AT_REMOVE_FROM_CART, priority = 100)
public class BlockingShoppingItemValidator extends XPFExtensionPointImpl implements ShoppingItemValidator {
    @Override
    public Collection<XPFStructuredErrorMessage> validate(final XPFShoppingItemValidationContext context) {
        List<XPFStructuredErrorMessage> results = new ArrayList<>();
        results.add(new XPFStructuredErrorMessage("block-remove-from-cart", "Always block remove-from-cart.", Collections.emptyMap()));
        return results;
    }
}