trea1/Order.java

package com.soa.order.entity;

import javax.persistence.*;
import java.math.BigDecimal;
import java.util.Date;
import java.util.List;

/**
 * 订单实体类
 */
@Entity
@Table(name = "orders")
public class Order {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(name = "user_id", nullable = false)
    private Long userId;

    @OneToMany(mappedBy = "order", cascade = CascadeType.ALL, orphanRemoval = true)
    private List<OrderItem> items;

    @Column(name = "total_amount", nullable = false, precision = 10, scale = 2)
    private BigDecimal totalAmount;

    @Column(nullable = false)
    private String status; // PENDING, PAID, SHIPPED, DELIVERED, CANCELLED

    @Column(name = "created_at")
    @Temporal(TemporalType.TIMESTAMP)
    private Date createdAt;

    // 构造函数
    public Order() {
        this.createdAt = new Date();
        this.status = "PENDING";
        this.totalAmount = BigDecimal.ZERO;
    }

    // getter和setter方法
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public Long getUserId() {
        return userId;
    }

    public void setUserId(Long userId) {
        this.userId = userId;
    }

    public List<OrderItem> getItems() {
        return items;
    }

    public void setItems(List<OrderItem> items) {
        this.items = items;
        // 计算总金额
        calculateTotalAmount();
    }

    public BigDecimal getTotalAmount() {
        return totalAmount;
    }

    public void setTotalAmount(BigDecimal totalAmount) {
        this.totalAmount = totalAmount;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public Date getCreatedAt() {
        return createdAt;
    }

    public void setCreatedAt(Date createdAt) {
        this.createdAt = createdAt;
    }

    // 计算订单总金额
    public void calculateTotalAmount() {
        BigDecimal total = BigDecimal.ZERO;
        if (items != null) {
            for (OrderItem item : items) {
                if (item.getSubtotal() != null) {
                    total = total.add(item.getSubtotal());
                }
            }
        }
        this.totalAmount = total;
    }
}