Package edu.uw.tcss.model

package edu.uw.tcss.model

Model classes for the UW Bookstore application.

This package contains the domain model for a bookstore shopping cart system:

• Item - Sealed interface for all purchasable items
• StoreItem - Simple item with standard pricing
• StoreBulkItem - Item with bulk pricing for members
• ItemOrder - Immutable record pairing an item with quantity
• Cart - Interface for shopping cart operations
• StoreCart - Shopping cart implementation

Class Hierarchy

Item (sealed interface)
├── StoreItem (final) — Simple pricing
└── StoreBulkItem (final) — Bulk pricing for members

Cart (interface)
└── StoreCart (final) — Shopping cart implementation

ItemOrder (record) — Item + quantity pair

Version:

Winter 2026

Author:

Charles Bryan

Class	Description
Cart	Represents a shopping cart that holds item orders.
Cart.CartSize	A record representing the size of a shopping cart.
Item	Represents a single item for sale in the bookstore.
ItemOrder	Represents a purchase order for an item - an immutable pairing of an Item with a desired quantity.
StoreBulkItem	Represents an item with bulk pricing available for members.
StoreCart	Implementation of a shopping cart for the bookstore.
StoreItem	Represents a simple item with standard pricing (no bulk discounts).