[4기 황창현, 이현호] JPA Mission 3 - 도메인 연관관계 매핑 실습

src/main/java/com/programmers/springbootjpa/domain/Address.java → src/main/java/com/programmers/springbootjpa/domain/customer/Address.java

@@ -1,4 +1,4 @@
-package com.programmers.springbootjpa.domain;
+package com.programmers.springbootjpa.domain.customer;
 
 import jakarta.persistence.Column;
 import jakarta.persistence.Embeddable;

src/main/java/com/programmers/springbootjpa/domain/Customer.java → src/main/java/com/programmers/springbootjpa/domain/customer/Customer.java

@@ -1,11 +1,15 @@
-package com.programmers.springbootjpa.domain;
+package com.programmers.springbootjpa.domain.customer;
 
+import com.programmers.springbootjpa.domain.order.Order;
 import jakarta.persistence.Column;
 import jakarta.persistence.Embedded;
 import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
 import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
+import jakarta.persistence.OneToMany;
+import java.util.ArrayList;
+import java.util.List;
 import lombok.AccessLevel;
 import lombok.Builder;
 import lombok.Getter;
@@ -26,12 +30,15 @@ public class Customer {
     @Column(name = "age", nullable = false)
     private Integer age;
 
-    @Column(name = "nick_name", nullable = false)
+    @Column(name = "nick_name", nullable = false, unique = true, length = 20)
     private String nickName;
 
     @Embedded
     private Address address;
 
+    @OneToMany(mappedBy = "customer")
+    private List<Order> orders = new ArrayList<>();
+
     @Builder
     public Customer(String name, Integer age, String nickName, Address address) {
         this.name = name;

src/main/java/com/programmers/springbootjpa/domain/item/Item.java

@@ -0,0 +1,33 @@
+package com.programmers.springbootjpa.domain.item;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Table(name = "item")
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Item {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private Long id;
+
+    private String name;
+    private Integer price;
+    private Integer stockQuantity;
+
+    @Builder
+    public Item(String name, Integer price, Integer stockQuantity) {
+        this.name = name;
+        this.price = price;
+        this.stockQuantity = stockQuantity;
+    }
+}

src/main/java/com/programmers/springbootjpa/domain/order/Order.java

@@ -0,0 +1,60 @@
+package com.programmers.springbootjpa.domain.order;
+
+import com.programmers.springbootjpa.domain.customer.Customer;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import java.time.LocalDateTime;
+import java.util.Objects;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Table(name = "orders")
+@Getter
+public class Order {
+
+    @Id
+    @Column(name = "id", nullable = false)
+    private String uuid;
+
+    @Column(name = "order_datetime", columnDefinition = "TIMESTAMP", nullable = false)
+    private LocalDateTime orderDatetime;
+
+    @Enumerated(EnumType.STRING)
+    @Column(name = "order_status", nullable = false)
+    private OrderStatus orderStatus;
+
+    @Column(name = "memo", columnDefinition = "TEXT")
+    private String memo;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "customer_id", referencedColumnName = "id")
+    private Customer customer;
+
+    @Builder
+    public Order(String uuid, LocalDateTime orderDatetime, OrderStatus orderStatus, String memo) {
+        this.uuid = uuid;
+        this.orderDatetime = orderDatetime;
+        this.orderStatus = orderStatus;
+        this.memo = memo;
+    }
+
+    public void setCustomer(Customer customer) {
+        if (Objects.nonNull(this.customer)) {
+            this.customer.getOrders().remove(this);
+        }
+
+        this.customer = customer;
+        customer.getOrders().add(this);
+    }
+}

src/main/java/com/programmers/springbootjpa/domain/order/OrderItem.java

@@ -0,0 +1,46 @@
+package com.programmers.springbootjpa.domain.order;
+
+import com.programmers.springbootjpa.domain.item.Item;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@Table(name = "order_item")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class OrderItem {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private Long id;
+
+    private Integer price;
+
+    private Integer quantity;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "order_id", referencedColumnName = "id")
+    private Order order;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "item_id", referencedColumnName = "id")
+    private Item item;
+
+    @Builder
+    public OrderItem(Integer price, Integer quantity, Order order, Item item) {
+        this.price = price;
+        this.quantity = quantity;
+        this.order = order;
+        this.item = item;
+    }
+}

src/main/java/com/programmers/springbootjpa/domain/order/OrderStatus.java

@@ -0,0 +1,6 @@
+package com.programmers.springbootjpa.domain.order;
+
+public enum OrderStatus {
+    OPENED,
+    CANCELLED
+}

src/main/java/com/programmers/springbootjpa/dto/request/CustomerCreateRequest.java

@@ -1,7 +1,7 @@
 package com.programmers.springbootjpa.dto.request;
 
-import com.programmers.springbootjpa.domain.Address;
-import com.programmers.springbootjpa.domain.Customer;
+import com.programmers.springbootjpa.domain.customer.Address;
+import com.programmers.springbootjpa.domain.customer.Customer;
 import jakarta.validation.constraints.Max;
 import jakarta.validation.constraints.Min;
 import jakarta.validation.constraints.NotBlank;

src/main/java/com/programmers/springbootjpa/dto/request/CustomerUpdateRequest.java

@@ -1,6 +1,6 @@
 package com.programmers.springbootjpa.dto.request;
 
-import com.programmers.springbootjpa.domain.Address;
+import com.programmers.springbootjpa.domain.customer.Address;
 import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.PositiveOrZero;

src/main/java/com/programmers/springbootjpa/dto/response/CustomerResponse.java

@@ -1,7 +1,7 @@
 package com.programmers.springbootjpa.dto.response;
 
-import com.programmers.springbootjpa.domain.Address;
-import com.programmers.springbootjpa.domain.Customer;
+import com.programmers.springbootjpa.domain.customer.Address;
+import com.programmers.springbootjpa.domain.customer.Customer;
 import lombok.Getter;
 
 @Getter

src/main/java/com/programmers/springbootjpa/repository/CustomerRepository.java

@@ -1,6 +1,6 @@
 package com.programmers.springbootjpa.repository;
 
-import com.programmers.springbootjpa.domain.Customer;
+import com.programmers.springbootjpa.domain.customer.Customer;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface CustomerRepository extends JpaRepository<Customer, Long> {

src/main/java/com/programmers/springbootjpa/repository/ItemRepository.java

@@ -0,0 +1,8 @@
+package com.programmers.springbootjpa.repository;
+
+import com.programmers.springbootjpa.domain.item.Item;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ItemRepository extends JpaRepository<Item, Long> {
+
+}

src/main/java/com/programmers/springbootjpa/repository/OrderItemRepository.java

@@ -0,0 +1,8 @@
+package com.programmers.springbootjpa.repository;
+
+import com.programmers.springbootjpa.domain.order.OrderItem;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface OrderItemRepository extends JpaRepository<OrderItem, Long> {
+
+}

src/main/java/com/programmers/springbootjpa/repository/OrderRepository.java

@@ -0,0 +1,8 @@
+package com.programmers.springbootjpa.repository;
+
+import com.programmers.springbootjpa.domain.order.Order;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface OrderRepository extends JpaRepository<Order, String> {
+
+}

src/main/java/com/programmers/springbootjpa/service/CustomerService.java

@@ -1,6 +1,6 @@
 package com.programmers.springbootjpa.service;
 
-import com.programmers.springbootjpa.domain.Customer;
+import com.programmers.springbootjpa.domain.customer.Customer;
 import com.programmers.springbootjpa.dto.request.CustomerCreateRequest;
 import com.programmers.springbootjpa.dto.request.CustomerUpdateRequest;
 import com.programmers.springbootjpa.dto.response.CustomerResponse;