jpashop : order, orderItem entity

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

@@ -48,4 +48,49 @@ public class Order {
         this.delivery = delivery;
         delivery.setOrder(this);
     }
+
+    // 생성 메서드
+    public static Order createOrder(Member member, Delivery delivery, OrderItem... orderItems) {
+        Order order = new Order();
+        order.setMember(member);
+        order.setDelivery(delivery);
+        for (OrderItem orderItem : orderItems) {
+            order.addOrderItem(orderItem);
+        }
+        order.setStatus(OrderStatus.ORDER);
+        order.setOrderDate(LocalDateTime.now());
+        return order;
+    }
+
+    // 비지니스 로직
+    /**
+     *  주문 취소
+     */
+    public void cancel() {
+        if (delivery.getStatus() == DeliveryStatus.COMP) {
+            throw new IllegalStateException("이미 배송완료된 상품은 취소가 불가능 합니다.");
+        }
+
+        this.setStatus(OrderStatus.CANCEL);
+//        for (OrderItem orderItem : orderItems) {
+//            orderItem.cancel();
+//        }
+        orderItems.forEach(OrderItem::cancel);
+    }
+
+    // 조회 로직
+
+    /**
+     * 전체 주문 가격 조회
+     */
+    public int getTotalPrice() {
+        return orderItems.stream()
+                .mapToInt(OrderItem::getTotalPrice)
+                .sum();
+//        int totalPrice = 0;
+//        for (OrderItem orderItem : orderItems) {
+//            totalPrice += orderItem.getTotalPrice();
+//        }
+//        return totalPrice;
+    }
 }

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

@@ -24,4 +24,28 @@ public class OrderItem {
 
     private int orderPrice; // 주문가격
     private int count; // 주문 수량
+
+    // 생성 메서드
+    public static OrderItem createOrderItem(Item item, int orderPrice, int count){
+        OrderItem orderItem = new OrderItem();
+        orderItem.setItem(item);
+        orderItem.setOrderPrice(orderPrice);
+        orderItem.setCount(count);
+        item.removeStock(count);
+        return orderItem;
+    }
+
+    // 비지니스 로직
+    public void cancel() {
+        getItem().addStock(count);
+    }
+
+    // 조회 로직
+
+    /**
+     *  주문상품 전체 가격 조회
+     */
+    public int getTotalPrice() {
+        return getOrderPrice() * getCount();
+    }
 }