[4기 황준호]JPA : Mission 3 제출입니다.

kdt-jpa/src/main/java/com/kdt/kdtjpa/domain/order/BaseEntity.java

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+package com.kdt.kdtjpa.domain.order;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.MappedSuperclass;
+import lombok.Getter;
+
+import java.time.LocalDateTime;
+
+@Getter
+@MappedSuperclass
+public abstract class BaseEntity {
+    @Column(name = "created_by")
+    private String createdBy;
+
+    @Column(name = "created_at", columnDefinition = "TIMESTAMP")
+    private LocalDateTime createdAt;
+}

kdt-jpa/src/main/java/com/kdt/kdtjpa/domain/order/Item.java

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+package com.kdt.kdtjpa.domain.order;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.util.Objects;
+
+@Entity
+@Table(name = "item")
+@Getter
+@Setter
+@DiscriminatorColumn(name = "DTYPE")
+@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
+public abstract class Item extends BaseEntity {
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private Long id;
+
+    private int price;
+    private int stockQuantity;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "order_item_id", referencedColumnName = "id")
+    private OrderItem orderItem;
+
+    public void setOrderItem(OrderItem orderItem) {
+        if (Objects.nonNull(this.orderItem)) {
+            this.orderItem.getItems().remove(this);
+        }
+        this.orderItem = orderItem;
+        orderItem.getItems().add(this);
+    }
+}

kdt-jpa/src/main/java/com/kdt/kdtjpa/domain/order/Member.java

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+package com.kdt.kdtjpa.domain.order;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Table(name = "member")
+@Getter
+public class Member extends BaseEntity {
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private Long id;
+
+    @Column(name = "name", nullable = false, length = 30)
+    private String name;
+
+    @Column(name = "nick_name", nullable = false, length = 30, unique = true)
+    private String nickName;
+
+    @Column(name = "age", nullable = false)
+    private int age;
+
+    @Column(name = "address", nullable = false)
+    private String address;
+
+    @Column(name = "description")
+    private String description;
+
+    @OneToMany(mappedBy = "member") // 연관관계 주인 설정
+    private List<Order> orders = new ArrayList<>();
+
+    public void addOrder(Order order) { // 연관관계 편의 메서드
+        order.setMember(this);
+    }
+}

kdt-jpa/src/main/java/com/kdt/kdtjpa/domain/order/Order.java

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+package com.kdt.kdtjpa.domain.order;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+@Table(name = "orders")
+@Getter
+public class Order extends BaseEntity {
+    @Id
+    @Column(name = "id")
+    private String uuid;
+
+    @Lob
+    private String memo;
+
+    @Enumerated(value = EnumType.STRING)
+    private OrderStatus orderStatus;
+
+    @Column(name = "order_datetime", columnDefinition = "TIMESTAMP")
+    private LocalDateTime orderDateTime;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "memeber_id", referencedColumnName = "id")
+    private Member member;
+
+    @OneToMany(mappedBy = "order", cascade = CascadeType.ALL, orphanRemoval = true)
+    List<OrderItem> orderItems;
+
+    public void setMember(Member member) {
+        if (Objects.nonNull(this.member)) {
+            member.getOrders().remove(this);
+        }
+        this.member = member;
+        member.getOrders().add(this);
+    }
+
+    public void addOrderItem(OrderItem orderItem) {
+        orderItem.setOrder(this);
+    }
+}

kdt-jpa/src/main/java/com/kdt/kdtjpa/domain/order/OrderItem.java

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+package com.kdt.kdtjpa.domain.order;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+@Table(name = "order_item")
+@Getter
+public class OrderItem extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private Long id;
+
+    private int price;
+    private int quantity;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "order_id", referencedColumnName = "id")
+    private Order order;
+
+    @OneToMany(mappedBy = "orderItem", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<Item> items;
+
+    public void setOrder(Order order) {
+        if (Objects.nonNull(this.order)) {
+            this.order.getOrderItems().remove(this);
+        }
+        this.order = order;
+        order.getOrderItems().add(this);
+    }
+
+    public void addItem(Item item) {
+        item.setOrderItem(this);
+    }
+}

kdt-jpa/src/main/java/com/kdt/kdtjpa/domain/order/OrderStatus.java

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+package com.kdt.kdtjpa.domain.order;
+
+public enum OrderStatus {
+    OPENED, CANCELLED
+}