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

src/main/java/com/programmers/springbootjpa/controller/CustomerController.java

@@ -8,14 +8,14 @@
 import java.util.List;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PatchMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseStatus;
 import org.springframework.web.bind.annotation.RestController;
 
 
@@ -27,37 +27,32 @@ public class CustomerController {
     private final CustomerService customerService;
 
     @PostMapping
-    public ResponseEntity<Void> createCustomer(@Valid @RequestBody CustomerCreateRequest customerCreateRequest) {
-        customerService.createCustomer(customerCreateRequest);
-
-        return ResponseEntity.status(HttpStatus.CREATED).body(null);
+    @ResponseStatus(HttpStatus.CREATED)
+    public void create(@Valid @RequestBody CustomerCreateRequest customerCreateRequest) {
+        customerService.create(customerCreateRequest);
     }
 
     @GetMapping("/{id}")
-    public ResponseEntity<CustomerResponse> readCustomer(@PathVariable Long id) {
-        CustomerResponse customerResponse = customerService.readCustomer(id);
-
-        return ResponseEntity.ok(customerResponse);
+    @ResponseStatus(HttpStatus.OK)
+    public CustomerResponse readById(@PathVariable Long id) {
+        return customerService.readById(id);
     }
 
     @GetMapping
-    public ResponseEntity<List<CustomerResponse>> readAllCustomer() {
-        List<CustomerResponse> customerResponses = customerService.readAllCustomer();
-
-        return ResponseEntity.ok(customerResponses);
+    @ResponseStatus(HttpStatus.OK)
+    public List<CustomerResponse> readAll() {
+        return customerService.readAll();
     }
 
-    @PatchMapping
-    public ResponseEntity<Void> updateCustomer(@Valid @RequestBody CustomerUpdateRequest customerUpdateRequest) {
-        customerService.updateCustomer(customerUpdateRequest);
-
-        return ResponseEntity.ok(null);
+    @PatchMapping("/{id}")
+    @ResponseStatus(HttpStatus.OK)
+    public void updateById(@PathVariable Long id, @Valid @RequestBody CustomerUpdateRequest customerUpdateRequest) {
+        customerService.updateById(id, customerUpdateRequest);
     }
 
     @DeleteMapping("/{id}")
-    public ResponseEntity<Void> deleteCustomer(@PathVariable Long id) {
-        customerService.deleteCustomer(id);
-
-        return ResponseEntity.noContent().build();
+    @ResponseStatus(HttpStatus.NO_CONTENT)
+    public void deleteById(@PathVariable Long id) {
+        customerService.deleteById(id);
     }
 }

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;
@@ -13,8 +13,10 @@ public class Address {
 
     @Column(name = "street_address", nullable = false)
     private String streetAddress;
+
     @Column(name = "detailed_address", nullable = false)
     private String detailedAddress;
+
     @Column(name = "zip_code", nullable = false)
     private Integer zipCode;
 

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

@@ -1,11 +1,16 @@
-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.Collections;
+import java.util.List;
 import lombok.AccessLevel;
 import lombok.Builder;
 import lombok.Getter;
@@ -26,12 +31,15 @@ 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;
@@ -40,6 +48,18 @@ public Customer(String name, Integer age, String nickName, Address address) {
         this.address = address;
     }
 
+    public List<Order> getOrders() {
+        return Collections.unmodifiableList(orders);
+    }
+
+    public void add(Order order) {
+        this.orders.add(order);
+    }
+
+    public void remove(Order order) {
+        this.orders.remove(order);
+    }
+
     public void changeNickName(String nickName) {
         this.nickName = nickName;
     }

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

@@ -0,0 +1,32 @@
+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.remove(this);
+        }
+
+        this.customer = customer;
+        customer.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;
@@ -16,12 +16,15 @@ public class CustomerCreateRequest {
 
     @NotBlank(message = "이름은 공백이거나 값이 없으면 안됩니다.")
     private String name;
+
     @Min(value = 1, message = "나이는 한살보다 많아야합니다.")
-    @Max(value = 100, message = "나이는 백살보다 적여야합니다.")
+    @Max(value = 100, message = "나이는 백살보다 적어야합니다.")
     @NotNull(message = "나이는 값이 없으면 안됩니다.")
     private Integer age;
+
     @NotBlank(message = "닉네임은 공백이거나 값이 없으면 안됩니다.")
     private String nickName;
+
     @NotNull(message = "주소값은 없을 수 없습니다.")
     private Address address;
 

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

@@ -1,9 +1,8 @@
 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;
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -12,10 +11,9 @@
 @NoArgsConstructor(access = AccessLevel.PRIVATE)
 public class CustomerUpdateRequest {
 
-    @PositiveOrZero(message = "id값은 0이상 이어야합니다.")
-    private Long id;
     @NotBlank(message = "닉네임은 공백이거나 값이 없으면 안됩니다.")
     private String nickName;
+
     @NotNull(message = "주소값은 없을 수 없습니다.")
     private Address address;
 

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> {
+
+}