[4기 박상민] Springboot-jpa weekly 미션 3 PR입니다.

src/main/java/org/programmers/jpaweeklymission/customer/Customer.java

@@ -5,14 +5,17 @@
 import jakarta.persistence.GeneratedValue;
 import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
+import jakarta.persistence.OneToMany;
 import jakarta.persistence.Table;
-import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.Size;
 import lombok.AccessLevel;
 import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import org.programmers.jpaweeklymission.global.BaseEntity;
+import org.programmers.jpaweeklymission.order.domain.Order;
+import java.util.ArrayList;
+import java.util.List;
 
 @Table(name = "customers")
 @Entity
@@ -21,18 +24,20 @@
 public class Customer extends BaseEntity {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "id")
     private Long id;
 
-    @NotBlank
     @Size(min = 1, max = 20)
     @Column(name = "first_name", length = 20, nullable = false)
     private String firstName;
 
-    @NotBlank
     @Size(min = 1, max = 20)
     @Column(name = "last_name", length = 20, nullable = false)
     private String lastName;
 
+    @OneToMany(mappedBy = "customer")
+    private List<Order> orders = new ArrayList<>();
+
     @Builder
     private Customer(String firstName, String lastName) {
         this.firstName = firstName;
@@ -51,4 +56,8 @@ private void changeFirstName(String firstName) {
     private void changeLastName(String lastName) {
         this.lastName = lastName;
     }
+
+    public void removeOrder(Order order) {
+        this.orders.remove(order);
+    }
 }

src/main/java/org/programmers/jpaweeklymission/customer/presentation/dto/CustomerCreationRequest.java

@@ -1,10 +1,13 @@
 package org.programmers.jpaweeklymission.customer.presentation.dto;
 
+import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.Size;
 
 public record CustomerCreationRequest(
+        @NotBlank(message = "First name must not be blank.")
         @Size(min = 1, max = 20, message = "First name must be at least 1 character and no more than 20 characters.")
         String firstName,
+        @NotBlank(message = "Last name must not be blank.")
         @Size(min = 1, max = 20, message = "Last name must be at least 1 character and no more than 20 characters.")
         String lastName
 ) {

src/main/java/org/programmers/jpaweeklymission/customer/presentation/dto/CustomerUpdateRequest.java

@@ -1,10 +1,13 @@
 package org.programmers.jpaweeklymission.customer.presentation.dto;
 
+import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.Size;
 
 public record CustomerUpdateRequest(
+        @NotBlank(message = "First name must not be blank.")
         @Size(min = 1, max = 20, message = "First name must be at least 1 character and no more than 20 characters.")
         String firstName,
+        @NotBlank(message = "Last name must not be blank.")
         @Size(min = 1, max = 20, message = "Last name must be at least 1 character and no more than 20 characters.")
         String lastName
 ) {

src/main/java/org/programmers/jpaweeklymission/global/BaseEntity.java

@@ -14,8 +14,8 @@
 public abstract class BaseEntity {
     @Column(name = "create_at", nullable = false, updatable = false)
     @CreatedDate
-    LocalDateTime createAt;
+    private LocalDateTime createAt;
     @Column(name = "update_at", nullable = false)
     @LastModifiedDate
-    LocalDateTime updateAt;
+    private LocalDateTime updateAt;
 }

src/main/java/org/programmers/jpaweeklymission/global/exception/GlobalExceptionHandler.java

@@ -11,7 +11,7 @@
 
 @Slf4j
 @RestControllerAdvice
-public class GlobalExceptionHandler {  // TODO: 혹시 멘토님들은 여기서 어떤 어떤 에러를 잡으시나요?
+public class GlobalExceptionHandler {
     @ExceptionHandler(EntityNotFoundException.class)
     @ResponseStatus(HttpStatus.NOT_FOUND)
     public ErrorResponse handleEntityNotFoundException(EntityNotFoundException e) {
@@ -23,7 +23,11 @@ public ErrorResponse handleEntityNotFoundException(EntityNotFoundException e) {
     @ResponseStatus(HttpStatus.BAD_REQUEST)
     public ErrorResponse handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {
         log.warn(e.getMessage(), e);
-        return ErrorResponse.newErrorResponse(e.getMessage());
+        return ErrorResponse.newErrorResponse(e
+                .getBindingResult()
+                .getFieldErrors()
+                .get(0)
+                .getDefaultMessage());
     }
 
     @ExceptionHandler(HttpMessageNotReadableException.class)

src/main/java/org/programmers/jpaweeklymission/item/domain/Item.java

@@ -0,0 +1,36 @@
+package org.programmers.jpaweeklymission.item.domain;
+
+import jakarta.persistence.Column;
+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;
+import org.programmers.jpaweeklymission.global.BaseEntity;
+
+@Table(name = "items")
+@Getter
+@Entity
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Item extends BaseEntity {
+    @Id
+    @Column(name = "id")
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @Column(name = "price")
+    private int price;
+
+    @Column(name = "stock_quantity")
+    private int stockQuantity;
+
+    @Builder
+    public Item(int price, int stockQuantity) {
+        this.price = price;
+        this.stockQuantity = stockQuantity;
+    }
+}

src/main/java/org/programmers/jpaweeklymission/order/domain/Order.java

@@ -0,0 +1,58 @@
+package org.programmers.jpaweeklymission.order.domain;
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.NotNull;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import org.programmers.jpaweeklymission.customer.Customer;
+import org.programmers.jpaweeklymission.global.BaseEntity;
+
+import java.util.List;
+import java.util.Objects;
+
+@Table(name = "orders")
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Order extends BaseEntity {
+    @Id
+    @Column(name = "id")
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @Enumerated(EnumType.STRING)
+    @Column(name = "status", nullable = false)
+    @NotNull
+    private OrderStatus status;
+
+    @Lob
+    @Column(name = "memo")
+    private String memo;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "customer_id", referencedColumnName = "id")
+    private Customer customer;
+
+    @OneToMany(mappedBy = "order")
+    private List<OrderItem> orderItems;
+
+    @Builder
+    public Order(OrderStatus status, String memo) {
+        this.status = status;
+        this.memo = memo;
+    }
+
+    public void setCustomer(Customer customer) {
+        if (Objects.nonNull(this.customer)) {
+            customer.removeOrder(this);
+        }
+        this.customer = customer;
+        customer.getOrders().add(this);
+    }
+
+    public void addOrderItems(OrderItem orderItem) {
+        orderItem.setOrder(this);
+    }
+}

src/main/java/org/programmers/jpaweeklymission/order/domain/OrderItem.java

@@ -0,0 +1,39 @@
+package org.programmers.jpaweeklymission.order.domain;
+
+import jakarta.persistence.*;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import org.programmers.jpaweeklymission.global.BaseEntity;
+import org.programmers.jpaweeklymission.item.domain.Item;
+
+import java.util.Objects;
+
+@Entity
+@Getter
+@Table(name = "order_items")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class OrderItem extends BaseEntity {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name = "id")
+    private Long id;
+
+    @ManyToOne
+    @JoinColumn(name = "order_id", referencedColumnName = "id")
+    private Order order;
+
+    @ManyToOne
+    @JoinColumn(name = "item_id", referencedColumnName = "id")
+    private Item item;
+
+    public void setOrder(Order order) {
+        this.order = order;
+        order.getOrderItems().add(this);
+    }
+
+    public void setItem(Item item) {
+        this.item = item;
+    }
+}

src/main/java/org/programmers/jpaweeklymission/order/domain/OrderStatus.java

@@ -0,0 +1,9 @@
+package org.programmers.jpaweeklymission.order.domain;
+
+
+public enum OrderStatus {
+    CREATED,
+    SHIPPING,
+    DELIVERED,
+    CANCELED
+}