Showcase stereotyping.

Author: odrotbohm

server/src/main/java/de/odrotbohm/restbucks/DTO.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package de.odrotbohm.restbucks;
+
+import org.jmolecules.stereotype.Stereotype;
+
+/**
+ * @author Oliver Drotbohm
+ */
+@Stereotype(groups = "restbucks")
+public interface DTO {}

server/src/main/java/de/odrotbohm/restbucks/order/OrderProjection.java

@@ -23,7 +23,7 @@
 
 /**
  * Projection interface to render {@link Order} summaries.
- * 
+ *
  * @author Oliver Gierke
  */
 @Projection(name = "summary", types = Order.class)

server/src/main/java/de/odrotbohm/restbucks/payment/Payment.java

@@ -80,6 +80,8 @@ public Receipt getReceipt() {
 	 *
 	 * @author Oliver Gierke
 	 */
+	// TODO: Cannot be a ValueObject as Spring Data REST filters association objects and we'd end up with only one
+	// property to serialize, which would cause unwrapping into the EntityModel.
 	@Value
 	public static class Receipt {
 

server/src/main/java/de/odrotbohm/restbucks/payment/PaymentService.java

@@ -20,11 +20,14 @@
 
 import java.util.Optional;
 
+import org.jmolecules.ddd.annotation.Service;
+
 /**
  * Interface to collect payment services.
  *
  * @author Oliver Gierke
  */
+@Service
 public interface PaymentService {
 
 	/**

server/src/main/java/de/odrotbohm/restbucks/payment/package-info.java

@@ -1,2 +1,3 @@
 @org.jspecify.annotations.NullMarked
 package de.odrotbohm.restbucks.payment;
+

server/src/main/java/de/odrotbohm/restbucks/payment/web/PaymentController.java

@@ -17,12 +17,13 @@
 
 import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.*;
 
+import de.odrotbohm.restbucks.DTO;
 import de.odrotbohm.restbucks.order.Order;
 import de.odrotbohm.restbucks.order.Orders;
 import de.odrotbohm.restbucks.payment.CreditCardNumber;
 import de.odrotbohm.restbucks.payment.Payment;
-import de.odrotbohm.restbucks.payment.PaymentService;
 import de.odrotbohm.restbucks.payment.Payment.Receipt;
+import de.odrotbohm.restbucks.payment.PaymentService;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NonNull;
@@ -156,7 +157,7 @@ static class PaymentModel extends RepresentationModel<PaymentModel> {
 
 	@Value
 	@RequiredArgsConstructor(onConstructor = @__(@JsonCreator))
-	static class PaymentForm {
+	static class PaymentForm implements DTO {
 		CreditCardNumber number;
 	}
 }

server/src/main/resources/META-INF/jmolecules-stereotype-groups.json

@@ -0,0 +1,8 @@
+{
+	"groups" : {
+		"restbucks" : {
+			"displayName" : "Restbucks",
+			"type" : "design"
+		}
+	}
+}