[Order API TDD] in-memory to jpa

product-order-service/src/main/java/com/example/productorderservice/product/Product.java

@@ -1,12 +1,22 @@
 package com.example.productorderservice.product;
 
+import jakarta.persistence.*;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
 import org.springframework.util.Assert;
 
+@Entity
+@Table(name = "products")
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
 class Product {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
-    private final String name;
-    private final int price;
-    private final DiscountPolicy discountPolicy;
+    private String name;
+    private int price;
+    private DiscountPolicy discountPolicy;
 
     public Product(final String name, final int price, final DiscountPolicy discountPolicy) {
         Assert.hasText(name, "상품명은 필수입니다.");
@@ -16,12 +26,4 @@ public Product(final String name, final int price, final DiscountPolicy discount
         this.price = price;
         this.discountPolicy = discountPolicy;
     }
-
-    public void assigId(final Long id) {
-        this.id = id;
-    }
-
-    public Long getId() {
-        return id;
-    }
 }

product-order-service/src/main/java/com/example/productorderservice/product/ProductRepository.java

@@ -1,17 +1,6 @@
 package com.example.productorderservice.product;
 
-import org.springframework.stereotype.Repository;
+import org.springframework.data.jpa.repository.JpaRepository;
 
-import java.util.HashMap;
-import java.util.Map;
-
-@Repository
-class ProductRepository {
-    private Map<Long, Product> persistence = new HashMap<>();
-    private Long sequence = 0L;
-
-    public void save(final Product product) {
-        product.assigId(++sequence);
-        persistence.put(product.getId(), product);
-    }
+interface ProductRepository extends JpaRepository<Product, Long> {
 }

product-order-service/src/main/java/com/example/productorderservice/product/ProductService.java

@@ -2,6 +2,7 @@
 
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -17,6 +18,7 @@ class ProductService {
     }
 
     @PostMapping
+    @Transactional
     public ResponseEntity<Void> addProduct(@RequestBody final AddProductRequest request) {
         final Product product = new Product(request.name(), request.price(), request.discountPolicy()); // 05. Product 클래스 생성
 

product-order-service/src/main/resources/application.properties

@@ -1 +1,2 @@
-
+spring.jpa.properties.hibernate.show_sql=true
+spring.jpa.properties.hibernate.format_sql=true