#3: implement component rules C3 + C4 - violations

src/main/java/com/devonfw/sample/archunit/componentb/logic/C4PositiveTest.java

@@ -0,0 +1,5 @@
+package com.devonfw.sample.archunit.componentb.logic;
+
+public class C4PositiveTest {
+    //Demo class. C4ViolationServiceLayerOfComponentbDependsOnLogicLayer class can depend on this class.
+}

src/main/java/com/devonfw/sample/archunit/componentb/service/C3ViolationServiceLayerOfComponentbDependsOnServiceLayerOfComponentTask.java

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+package com.devonfw.sample.archunit.componentb.service;
+
+import com.devonfw.sample.archunit.task.service.TaskService;
+
+public class C3ViolationServiceLayerOfComponentbDependsOnServiceLayerOfComponentTask {
+    TaskService taskService; // noncompliant
+}

src/main/java/com/devonfw/sample/archunit/componentb/service/C4ViolationServiceLayerOfComponentbDependsOnLogicLayerOfComponentTask.java

@@ -0,0 +1,26 @@
+package com.devonfw.sample.archunit.componentb.service;
+
+import com.devonfw.sample.archunit.componentb.logic.C4PositiveTest;
+import com.devonfw.sample.archunit.general.common.ApplicationEntity;
+import com.devonfw.sample.archunit.general.logic.AbstractUc;
+import com.devonfw.sample.archunit.task.common.TaskItem;
+import com.devonfw.sample.archunit.task.logic.UcDeleteTaskItem;
+
+public class C4ViolationServiceLayerOfComponentbDependsOnLogicLayerOfComponentTask {
+  // Forbidden dependency covered
+  UcDeleteTaskItem ucDeleteTaskItem; // noncompliant (different components logic layer)
+
+  // Forbidden dependencies uncovered
+
+  TaskItem taskItem; // noncompliant (wont violate C4 test. Should be caught by other rules)
+
+  //TaskItemEntity taskItemEntity; // noncompliant (wont violate C4 test. Should be caught by layer rules)
+
+  // Allowed dependencies
+  C4PositiveTest c4PositiveTest; // compliant (same components logic layer)
+
+  ApplicationEntity applicationEntity; // compliant (projects default component)
+
+  AbstractUc abstractUc; // compliant (projects default component)
+
+}