yilai/Order.java

/**
 * 订单类，包含订单的基本信息
 */
package com.orderprocessing;

import java.util.Date;
import java.util.List;

public class Order {
    private String orderId;
    private Date orderDate;
    private double totalAmount;
    private String customerName;
    private List<OrderItem> items;
    private OrderStatus status;
    
    public enum OrderStatus {
        CREATED, VALIDATED, PROCESSED, SHIPPED, DELIVERED, CANCELLED
    }
    
    // 构造方法
    public Order(String orderId, String customerName, List<OrderItem> items) {
        this.orderId = orderId;
        this.customerName = customerName;
        this.items = items;
        this.orderDate = new Date();
        this.status = OrderStatus.CREATED;
        calculateTotalAmount();
    }
    
    // 计算订单总金额
    private void calculateTotalAmount() {
        totalAmount = 0;
        if (items != null) {
            for (OrderItem item : items) {
                totalAmount += item.getPrice() * item.getQuantity();
            }
        }
    }
    
    // 应用折扣
    public void applyDiscount(double discountAmount) {
        if (discountAmount > 0 && discountAmount <= totalAmount) {
            totalAmount -= discountAmount;
        }
    }
    
    // getter和setter方法
    public String getOrderId() {
        return orderId;
    }
    
    public Date getOrderDate() {
        return orderDate;
    }
    
    public double getTotalAmount() {
        return totalAmount;
    }
    
    public String getCustomerName() {
        return customerName;
    }
    
    public List<OrderItem> getItems() {
        return items;
    }
    
    public OrderStatus getStatus() {
        return status;
    }
    
    public void setStatus(OrderStatus status) {
        this.status = status;
    }
    
    @Override
    public String toString() {
        return "Order{" +
                "orderId='" + orderId + '\'' +
                ", customerName='" + customerName + '\'' +
                ", totalAmount=" + totalAmount +
                ", status=" + status +
                '}';
    }
}