#1: implement layer dependency violations

src/main/java/com/devonfw/sample/archunit/batch/L11ViolationBatchLayerDependsOnDataaccessLayer.java

@@ -0,0 +1,11 @@
+package com.devonfw.sample.archunit.batch;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.task.dataaccess.TaskItemRepository;
+
+public class L11ViolationBatchLayerDependsOnDataaccessLayer {
+    // Violation! Batch layer should not depend on dataaccess layer 
+    @Inject
+    TaskItemRepository taskItemRepository;
+}

src/main/java/com/devonfw/sample/archunit/batch/L7ViolationBatchLayerDependsOnServiceLayer.java

@@ -0,0 +1,11 @@
+package com.devonfw.sample.archunit.batch;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.task.service.TaskService;
+
+public class L7ViolationBatchLayerDependsOnServiceLayer {
+    // Violation! Batch layer should not depend on service layer 
+    @Inject
+    TaskService taskService;
+}

src/main/java/com/devonfw/sample/archunit/batch/SampleBatchClass.java

@@ -0,0 +1,6 @@
+package com.devonfw.sample.archunit.batch;
+// This demo class is provided to be erroneously depended on by:
+// L5ViolationClientLayerDependsOnBatchLayer and L6ViolationServiceLayerDependsOnBatchLayer
+public class SampleBatchClass {
+
+}

src/main/java/com/devonfw/sample/archunit/client/L3ViolationClientLayerDependsOnLogicLayer.java

@@ -0,0 +1,11 @@
+package com.devonfw.sample.archunit.client;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.task.logic.TaskItemMapper;
+
+public class L3ViolationClientLayerDependsOnLogicLayer {
+    // Violation! Client layer should not depend on logic layer
+    @Inject
+    TaskItemMapper taskItemMapper;
+}

src/main/java/com/devonfw/sample/archunit/client/L4ViolationClientLayerDependsOnDataaccessLayer.java

@@ -0,0 +1,11 @@
+package com.devonfw.sample.archunit.client;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.task.dataaccess.TaskItemRepository;
+
+public class L4ViolationClientLayerDependsOnDataaccessLayer {
+    // Violation! Client layer should not depend on dataaccess layer
+    @Inject
+    TaskItemRepository taskItemRepository;
+}

src/main/java/com/devonfw/sample/archunit/client/L5ViolationClientLayerDependsOnBatchLayer.java

@@ -0,0 +1,11 @@
+package com.devonfw.sample.archunit.client;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.batch.SampleBatchClass;
+
+public class L5ViolationClientLayerDependsOnBatchLayer {
+    // Violation! Client layer should not depend on batch layer
+    @Inject
+    SampleBatchClass sampleBatchClass;
+}

src/main/java/com/devonfw/sample/archunit/client/SampleClient.java

@@ -0,0 +1,28 @@
+package com.devonfw.sample.archunit.client;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.net.http.HttpResponse.BodyHandlers;
+
+public class SampleClient {
+
+    public static void httpGetTaskItem(String taskId) throws URISyntaxException, IOException, InterruptedException {
+        HttpClient client = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder()
+            .version(HttpClient.Version.HTTP_2)
+            .uri(URI.create("http://localhost:8080/task/item/" + taskId))
+            .headers("Accept-Enconding", "gzip, deflate")
+            .build();
+        HttpResponse<String> response = client.send(request, BodyHandlers.ofString());
+
+        String responseBody = response.body();
+        int responseStatusCode = response.statusCode();
+
+        System.out.println("httpGetRequest: " + responseBody);
+        System.out.println("httpGetRequest status code: " + responseStatusCode);
+    }
+}

src/main/java/com/devonfw/sample/archunit/task/common/L1ViolationCommonLayerDependsOnOtherLayer.java

@@ -0,0 +1,10 @@
+package com.devonfw.sample.archunit.task.common;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.task.logic.TaskItemMapper;
+
+public class L1ViolationCommonLayerDependsOnOtherLayer {
+    @Inject
+    TaskItemMapper taskItemMapper;
+}

src/main/java/com/devonfw/sample/archunit/task/dataaccess/L10ViolationDataaccessLayerDependsOnServiceLayer.java

@@ -0,0 +1,11 @@
+package com.devonfw.sample.archunit.task.dataaccess;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.task.service.TaskService;
+
+public class L10ViolationDataaccessLayerDependsOnServiceLayer {
+    // Violation! Dataaccess layer should not depend on service layer.
+    @Inject
+    TaskService taskService;
+}

src/main/java/com/devonfw/sample/archunit/task/dataaccess/L12ViolationDataaccessLayerDependsOnLogicLayer.java

@@ -0,0 +1,11 @@
+package com.devonfw.sample.archunit.task.dataaccess;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.task.logic.TaskItemMapper;
+
+public class L12ViolationDataaccessLayerDependsOnLogicLayer {
+    // Violation! Dataaccess layer should not depend on logic layer.
+    @Inject
+    TaskItemMapper taskItemMapper;
+}

src/main/java/com/devonfw/sample/archunit/task/logic/L9ViolationLogicLayerDependsOnServiceLayer.java

@@ -0,0 +1,12 @@
+package com.devonfw.sample.archunit.task.logic;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.task.service.TaskService;
+
+public class L9ViolationLogicLayerDependsOnServiceLayer {
+    // Violation! Logic layer should not depend on service layer
+    @Inject
+    TaskService taskService;
+
+}

src/main/java/com/devonfw/sample/archunit/task/service/L2ViolationNoLayerOtherThanClientDependsOnClientLayer.java

@@ -0,0 +1,11 @@
+package com.devonfw.sample.archunit.task.service;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.client.SampleClient;
+
+public class L2ViolationNoLayerOtherThanClientDependsOnClientLayer {
+    // Violation: service layer may not depend on client layer.
+    @Inject
+    SampleClient sampleClient;
+}

src/main/java/com/devonfw/sample/archunit/task/service/L6ViolationServiceLayerDependsOnBatchLayer.java

@@ -0,0 +1,11 @@
+package com.devonfw.sample.archunit.task.service;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.batch.SampleBatchClass;
+
+public class L6ViolationServiceLayerDependsOnBatchLayer {
+    // Violation! Service layer should not depend on batch layer
+    @Inject
+    SampleBatchClass sampleBatchClass;
+}

src/main/java/com/devonfw/sample/archunit/task/service/L8ViolationServiceLayerDependsOnDataaccessLayer.java

@@ -0,0 +1,11 @@
+package com.devonfw.sample.archunit.task.service;
+
+import javax.inject.Inject;
+
+import com.devonfw.sample.archunit.task.dataaccess.TaskItemRepository;
+
+public class L8ViolationServiceLayerDependsOnDataaccessLayer {
+    // Violation! Service layer should not depend on dataaccess layer
+    @Inject
+    TaskItemRepository taskItemRepository;
+}