2. API 개발 고급 - 준비

조회용 샘플 데이터 입력

@Component
@RequiredArgsConstructor
public class InitDb {
    
    private final InitService initService;

    @PostConstruct
    public void init() {
        initService.dbInit1();
        initService.dbInit2();
    }
    
    @Component
    @Transactional
    @RequiredArgsConstructor
    static class InitService {
        
        private final EntityManager em;
        
        public void dbInit1() {
            Member member = createMember("userA", "서울", "1", "1111"); 
            em.persist(member);
            
            Book book1 = createBook("JPA1 BOOK", 10000, 100);
            em.persist(book1);
            Book book2 = createBook("JPA2 BOOK", 20000, 100);
            em.persist(book2);
            
            OrderItem orderItem1 = OrderItem.createOrderItem(book1, 10000, 1);
            OrderItem orderItem2 = OrderItem.createOrderItem(book2, 20000, 2);
            Order order = Order.createOrder(member, createDelivery(member), orderItem1, orderItem2);
            em.persist(order);
        }
        
        public void dbInit2() {
            Member member = createMember("userB", "진주", "2", "2222");
            em.persist(member);
            
            Book book1 = createBook("SPRING1 BOOK", 20000, 200);
            em.persist(book1);
            Book book2 = createBook("SPRING2 BOOK", 40000, 300);
            em.persist(book2);
            
            Delivery delivery = createDelivery(member);
            OrderItem orderItem1 = OrderItem.createOrderItem(book1, 20000, 3);
            OrderItem orderItem2 = OrderItem.createOrderItem(book2, 40000, 4);
            Order order = Order.createOrder(member, delivery, orderItem1, orderItem2);
            em.persist(order);
        }
        
        private Member createMember(String name, String city, String street,
                                    String zipcode) {
            
            Member member = new Member();
            member.setName(name);
            member.setAddress(new Address(city, street, zipcode));
            return member;
        }
        
        private Book createBook(String name, int price, int stockQuantity) {
            Book book = new Book();
            book.setName(name);
            book.setPrice(price);
            book.setStockQuantity(stockQuantity);
            return book;
        }
        
        private Delivery createDelivery(Member member) {
            Delivery delivery = new Delivery();
            delivery.setAddress(member.getAddress());
            return delivery;
        }
    }
}