jpashop : entity config

jpashop/src/main/java/com/example/jpashop/domain/Category.java

@@ -3,6 +3,7 @@ package com.example.jpashop.domain;
 import com.example.jpashop.domain.item.Item;
 import lombok.Getter;
 import lombok.Setter;
+import org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy;
 
 import javax.persistence.*;
 import java.util.ArrayList;
@@ -25,10 +26,16 @@ public class Category {
             inverseJoinColumns = @JoinColumn(name = "item_id"))
     private List<Item> items = new ArrayList<>();
 
-    @ManyToOne
+    @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "parent_id")
     private Category parent;
 
     @OneToMany(mappedBy = "parent")
     private List<Category> child = new ArrayList<>();
+
+    // 연관관계 메서드
+    public void addChildCategory(Category child) {
+        this.child.add(child);
+        child.setParent(this);
+    }
 }

jpashop/src/main/java/com/example/jpashop/domain/Delivery.java

@@ -13,7 +13,7 @@ public class Delivery {
     @Column(name = "delivery_id")
     private Long id;
 
-    @OneToOne(mappedBy = "delivery")
+    @OneToOne(mappedBy = "delivery", fetch = FetchType.LAZY)
     private Order order;
 
     @Embedded

jpashop/src/main/java/com/example/jpashop/domain/Order.java

@@ -17,14 +17,14 @@ public class Order {
     @Column(name = "order_id")
     private Long id;
 
-    @ManyToOne
+    @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "member_id")
     private Member member;
 
-    @OneToMany(mappedBy = "order")
+    @OneToMany(mappedBy = "order", cascade = CascadeType.ALL)
     private List<OrderItem> orderItems = new ArrayList<>();
 
-    @OneToOne
+    @OneToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
     @JoinColumn(name = "delivery_id")
     private Delivery delivery;
 
@@ -32,4 +32,20 @@ public class Order {
 
     @Enumerated(EnumType.STRING)
     private OrderStatus status; // 주문 상태 [ORDER, CANCEL]
+
+    // 연관관계 메서드
+    public void setMember(Member member) {
+        this.member = member;
+        member.getOrder().add(this);
+    }
+
+    public void addOrderItem(OrderItem orderItem) {
+        orderItems.add(orderItem);
+        orderItem.setOrder(this);
+    }
+
+    public void setDelivery(Delivery delivery) {
+        this.delivery = delivery;
+        delivery.setOrder(this);
+    }
 }

jpashop/src/main/java/com/example/jpashop/domain/OrderItem.java

@@ -14,11 +14,11 @@ public class OrderItem {
     @Column(name = "order_item_id")
     private Long id;
 
-    @ManyToOne
+    @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "item_id")
     private Item item;
 
-    @ManyToOne
+    @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "order_id")
     private Order order;