BAEL-2275: Change constructor of Order

ddd/src/main/java/com/baeldung/ddd/PersistingDddAggregatesApplication.java

@@ -1,12 +1,12 @@
-package com.baeldung.ddd;
+package com.baeldung.ddd;
-
+
-import org.springframework.boot.SpringApplication;
+import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
-
+
-@SpringBootApplication
+@SpringBootApplication(scanBasePackages = "com.baeldung.ddd.order")
-public class PersistingDddAggregatesApplication {
+public class PersistingDddAggregatesApplication {
-
+
-	public static void main(String[] args) {
+	public static void main(String[] args) {
-		SpringApplication.run(PersistingDddAggregatesApplication.class, args);
+		SpringApplication.run(PersistingDddAggregatesApplication.class, args);
-	}
+	}
-}
+}

ddd/src/main/java/com/baeldung/ddd/layers/application/OrderController.java

@@ -22,9 +22,9 @@ public class OrderController {
 
     @PostMapping(produces = MediaType.APPLICATION_JSON_UTF8_VALUE, consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)
     CreateOrderResponse createOrder(@RequestBody final CreateOrderRequest createOrderRequest) {
-        return new CreateOrderResponse(orderService
+        final ObjectId id = orderService.createOrder(createOrderRequest.getProduct());
-          .createOrder(createOrderRequest.getProducts())
+
-          .toString());
+        return new CreateOrderResponse(id.toString());
     }
 
     @PostMapping(value = "/{id}/products", consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)

ddd/src/main/java/com/baeldung/ddd/layers/application/request/AddProductRequest.java

@@ -4,8 +4,10 @@ import com.baeldung.ddd.layers.domain.Product;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import javax.validation.constraints.NotNull;
+
 public class AddProductRequest {
-    private Product product;
+    @NotNull private Product product;
 
     @JsonCreator
     public AddProductRequest(@JsonProperty("product") final Product product) {

ddd/src/main/java/com/baeldung/ddd/layers/application/request/CreateOrderRequest.java

@@ -4,18 +4,17 @@ import com.baeldung.ddd.layers.domain.Product;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
-import java.util.ArrayList;
+import javax.validation.constraints.NotNull;
-import java.util.List;
 
 public class CreateOrderRequest {
-    private List<Product> products;
+    @NotNull private Product product;
 
     @JsonCreator
-    public CreateOrderRequest(@JsonProperty("products") final List<Product> productList) {
+    public CreateOrderRequest(@JsonProperty("product") @NotNull Product product) {
-        this.products = new ArrayList<>(productList);
+        this.product = product;
     }
 
-    public List<Product> getProducts() {
+    public Product getProduct() {
-        return products;
+        return product;
     }
 }

ddd/src/main/java/com/baeldung/ddd/layers/domain/Order.java

@@ -14,14 +14,11 @@ public class Order {
     private List<Product> products;
     private BigDecimal price;
 
-    public Order(final ObjectId id, final List<Product> products) {
+    public Order(final ObjectId id, final Product product) {
         this.id = id;
-        this.products = new ArrayList<>(products);
+        this.products = new ArrayList<>(Collections.singletonList(product));
         this.status = OrderStatus.CREATED;
-        this.price = products
+        this.price = product.getPrice();
-          .stream()
-          .map(Product::getPrice)
-          .reduce(BigDecimal.ZERO, BigDecimal::add);
     }
 
     public void complete() {

ddd/src/main/java/com/baeldung/ddd/layers/domain/service/DomainOrderService.java

@@ -2,12 +2,9 @@ package com.baeldung.ddd.layers.domain.service;
 
 import com.baeldung.ddd.layers.domain.Order;
 import com.baeldung.ddd.layers.domain.Product;
-import com.baeldung.ddd.layers.domain.exception.DomainException;
 import com.baeldung.ddd.layers.domain.repository.OrderRepository;
 import org.bson.types.ObjectId;
 
-import java.util.List;
-
 public class DomainOrderService implements OrderService {
 
     private final OrderRepository orderRepository;
@@ -17,8 +14,8 @@ public class DomainOrderService implements OrderService {
     }
 
     @Override
-    public ObjectId createOrder(List<Product> products) {
+    public ObjectId createOrder(final Product product) {
-        final Order order = new Order(ObjectId.get(), products);
+        final Order order = new Order(ObjectId.get(), product);
         orderRepository.save(order);
 
         return order.getId();

ddd/src/main/java/com/baeldung/ddd/layers/domain/service/OrderService.java

@@ -3,10 +3,8 @@ package com.baeldung.ddd.layers.domain.service;
 import com.baeldung.ddd.layers.domain.Product;
 import org.bson.types.ObjectId;
 
-import java.util.List;
-
 public interface OrderService {
-    ObjectId createOrder(List<Product> products);
+    ObjectId createOrder(final Product product);
 
     void addProduct(ObjectId id, Product product);
 

ddd/src/main/java/com/baeldung/ddd/layers/infrastracture/configuration/DomainConfiguration.java

@@ -1,12 +1,15 @@
 package com.baeldung.ddd.layers.infrastracture.configuration;
 
+import com.baeldung.ddd.layers.DomainLayerApplication;
 import com.baeldung.ddd.layers.domain.repository.OrderRepository;
 import com.baeldung.ddd.layers.domain.service.DomainOrderService;
 import com.baeldung.ddd.layers.domain.service.OrderService;
 import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 
 @Configuration
+@ComponentScan(basePackageClasses = DomainLayerApplication.class)
 public class DomainConfiguration {
 
     @Bean

ddd/src/main/java/com/baeldung/ddd/layers/infrastracture/configuration/MongoDBConfiguration.java

@@ -1,7 +1,8 @@
 package com.baeldung.ddd.layers.infrastracture.configuration;
 
+import com.baeldung.ddd.layers.infrastracture.repository.SpringDataOrderRepository;
 import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;
 
-@EnableMongoRepositories
+@EnableMongoRepositories(basePackageClasses = SpringDataOrderRepository.class)
 public class MongoDBConfiguration {
 }

ddd/src/test/java/com/baeldung/ddd/layers/domain/OrderProvider.java

@@ -3,11 +3,10 @@ package com.baeldung.ddd.layers.domain;
 import org.bson.types.ObjectId;
 
 import java.math.BigDecimal;
-import java.util.Arrays;
 
 public class OrderProvider {
     public static Order getCreatedOrder() {
-        return new Order(ObjectId.get(), Arrays.asList(new Product(BigDecimal.TEN, "productName")));
+        return new Order(ObjectId.get(), new Product(BigDecimal.TEN, "productName"));
     }
 
     public static Order getCompletedOrder() {

ddd/src/test/java/com/baeldung/ddd/layers/domain/service/DomainOrderServiceUnitTest.java

@@ -10,7 +10,6 @@ import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.function.Executable;
 
 import java.math.BigDecimal;
-import java.util.Arrays;
 import java.util.Optional;
 
 import static org.junit.jupiter.api.Assertions.assertNotNull;
@@ -33,7 +32,7 @@ class DomainOrderServiceUnitTest {
     void shouldCreateOrder_thenSaveIt() {
         final Product product = new Product(BigDecimal.TEN, "productName");
 
-        final ObjectId id = tested.createOrder(Arrays.asList(product));
+        final ObjectId id = tested.createOrder(product);
 
         verify(orderRepository).save(any(Order.class));
         assertNotNull(id);

ddd/src/test/java/com/baeldung/ddd/layers/infrastracture/repository/MongoDbOrderRepositoryUnitTest.java

@@ -14,7 +14,7 @@ class MongoDbOrderRepositoryUnitTest {
     void setUp(){
 
     }
-    
+
     @Test
     void findById() {
     }