update number 6

state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/analysis/enricher/matching/StrictFqnMatchingEngine.java

@@ -110,10 +110,6 @@ public class StrictFqnMatchingEngine implements EventMatchingEngine {
             return true;
         }
 
-        if (eventStr.contains(".valueOf(") || eventStr.contains("valueOf (")) {
-            return true;
-        }
-
         if (eventStr.contains(" ? ") && eventStr.contains(" : ")) {
             return true;
         }

state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/analysis/service/AbstractCallGraphEngine.java

@@ -1410,11 +1410,14 @@ public abstract class AbstractCallGraphEngine implements CallGraphEngine {
             String className = baseCalled.substring(0, baseCalled.lastIndexOf('.'));
             String methodName = baseCalled.substring(baseCalled.lastIndexOf('.') + 1);
             
+            TypeDeclaration td = context.getTypeDeclaration(className);
+            if (isFunctionalInterface(className, td)) {
+                allResolved.add(baseCalled);
+            } else {
                 List<String> impls = context.getImplementations(className);
                 if (impls.isEmpty()) {
                     allResolved.add(baseCalled);
                 } else {
-                TypeDeclaration td = context.getTypeDeclaration(className);
                     boolean isAbstractOrInterface = false;
                     if (td != null) {
                         isAbstractOrInterface = td.isInterface() || (td.modifiers() != null && td.modifiers().toString().contains("abstract"));
@@ -1427,6 +1430,7 @@ public abstract class AbstractCallGraphEngine implements CallGraphEngine {
                         allResolved.add(impl + "." + methodName);
                     }
                 }
+            }
         } else {
             allResolved.add(baseCalled);
         }
@@ -1434,6 +1438,52 @@ public abstract class AbstractCallGraphEngine implements CallGraphEngine {
         return allResolved;
     }
 
+    private boolean isFunctionalInterface(String className, TypeDeclaration td) {
+        if (className == null) return false;
+        if (className.equals("java.lang.Runnable") || className.equals("Runnable")) return true;
+        if (className.equals("java.util.concurrent.Callable") || className.equals("Callable")) return true;
+        if (className.startsWith("java.util.function.")) return true;
+        
+        if (td != null && td.isInterface()) {
+            if (td.modifiers() != null) {
+                for (Object mod : td.modifiers()) {
+                    if (mod instanceof Annotation ann) {
+                        String name = ann.getTypeName().toString();
+                        if (name.equals("FunctionalInterface") || name.endsWith(".FunctionalInterface")) {
+                            return true;
+                        }
+                    }
+                }
+            }
+            int abstractMethodCount = 0;
+            for (MethodDeclaration md : td.getMethods()) {
+                if (md.getBody() == null) {
+                    String name = md.getName().getIdentifier();
+                    if (name.equals("equals") && md.parameters().size() == 1) continue;
+                    if (name.equals("hashCode") && md.parameters().isEmpty()) continue;
+                    if (name.equals("toString") && md.parameters().isEmpty()) continue;
+                    
+                    boolean isStaticOrDefault = false;
+                    if (md.modifiers() != null) {
+                        for (Object mod : md.modifiers()) {
+                            if (mod instanceof Modifier m) {
+                                if (m.isStatic() || m.isDefault()) {
+                                    isStaticOrDefault = true;
+                                    break;
+                                }
+                            }
+                        }
+                    }
+                    if (!isStaticOrDefault) {
+                        abstractMethodCount++;
+                    }
+                }
+            }
+            return abstractMethodCount == 1;
+        }
+        return false;
+    }
+
     private String unwrapConverterMethods(String arg) {
         if (arg == null) return null;
         String current = arg;

state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/analysis/service/CallGraphPathFinder.java

@@ -102,6 +102,30 @@ public class CallGraphPathFinder {
             }
         }
 
+        // Handle implementation fallback for interfaces/superclasses (interface -> concrete class)
+        if (result.isEmpty() && start.contains(".")) {
+            String className = start.substring(0, start.lastIndexOf('.'));
+            String methodName = start.substring(start.lastIndexOf('.') + 1);
+            if (className.contains("<")) {
+                className = className.substring(0, className.indexOf('<'));
+            }
+            List<String> impls = context.getImplementations(className);
+            if (impls != null) {
+                for (String impl : impls) {
+                    String implMethod = impl + "." + methodName;
+                    if (graph.containsKey(implMethod)) {
+                        List<List<String>> implPaths = findAllPaths(implMethod, target, graph, visited);
+                        for (List<String> implPath : implPaths) {
+                            List<String> path = new ArrayList<>();
+                            path.add(start);
+                            path.addAll(implPath);
+                            result.add(path);
+                        }
+                    }
+                }
+            }
+        }
+
         visited.remove(start);
         return result;
     }

state_machine_exporter/src/test/java/click/kamil/springstatemachineexporter/analysis/service/EnterpriseBugsTest.java

@@ -168,4 +168,128 @@ class EnterpriseBugsTest {
                 .build();
         assertThat(engine.isRoutedToCorrectMachine(chain2, "com.example.OrderStateMachineConfig", context)).isFalse();
     }
+
+    @Test
+    void shouldFindPathsUsingInterfaceImplementationFallback(@TempDir Path tempDir) throws IOException {
+        String apiSrc = """
+                package com.example;
+                public interface OrderApi {
+                    void submit();
+                }
+                """;
+        String controllerSrc = """
+                package com.example;
+                public class OrderController implements OrderApi {
+                    private OrderService service;
+                    public void submit() {
+                        service.trigger();
+                    }
+                }
+                """;
+        String serviceSrc = """
+                package com.example;
+                public class OrderService {
+                    public void trigger() {}
+                }
+                """;
+
+        Files.writeString(tempDir.resolve("OrderApi.java"), apiSrc);
+        Files.writeString(tempDir.resolve("OrderController.java"), controllerSrc);
+        Files.writeString(tempDir.resolve("OrderService.java"), serviceSrc);
+
+        CodebaseContext context = new CodebaseContext();
+        context.scan(tempDir);
+
+        HeuristicCallGraphEngine engine = new HeuristicCallGraphEngine(context);
+        var graph = engine.buildCallGraph();
+
+        CallGraphPathFinder pathFinder = new CallGraphPathFinder(context);
+        List<List<String>> paths = pathFinder.findAllPaths("com.example.OrderApi.submit", "com.example.OrderService.trigger", graph, new java.util.HashSet<>());
+
+        assertThat(paths).hasSize(1);
+        assertThat(paths.get(0)).containsExactly(
+                "com.example.OrderApi.submit",
+                "com.example.OrderController.submit",
+                "com.example.OrderService.trigger"
+        );
+    }
+
+    @Test
+    void shouldNotPolymorphicallyExpandFunctionalInterfaceCalls(@TempDir Path tempDir) throws IOException {
+        String taskSrc = """
+                package com.example;
+                @FunctionalInterface
+                public interface MyTask {
+                    void run();
+                }
+                """;
+        String spuriousSrc = """
+                package com.example;
+                public class SpuriousTask implements MyTask {
+                    private UnrelatedService service;
+                    public void run() {
+                        service.doSomething();
+                    }
+                }
+                """;
+        String unrelatedSrc = """
+                package com.example;
+                public class UnrelatedService {
+                    public void doSomething() {}
+                }
+                """;
+        String executorSrc = """
+                package com.example;
+                public class ExecutorService {
+                    public void execute(MyTask task) {
+                        task.run();
+                    }
+                }
+                """;
+        String mainSrc = """
+                package com.example;
+                public class MainService {
+                    private ExecutorService executor;
+                    public void runJob() {
+                        executor.execute(() -> {});
+                    }
+                }
+                """;
+
+        Files.writeString(tempDir.resolve("MyTask.java"), taskSrc);
+        Files.writeString(tempDir.resolve("SpuriousTask.java"), spuriousSrc);
+        Files.writeString(tempDir.resolve("UnrelatedService.java"), unrelatedSrc);
+        Files.writeString(tempDir.resolve("ExecutorService.java"), executorSrc);
+        Files.writeString(tempDir.resolve("MainService.java"), mainSrc);
+
+        CodebaseContext context = new CodebaseContext();
+        context.scan(tempDir);
+
+        HeuristicCallGraphEngine engine = new HeuristicCallGraphEngine(context);
+        var graph = engine.buildCallGraph();
+
+        // The execute method calls task.run(). Since MyTask is a functional interface,
+        // it should NOT resolve task.run() to SpuriousTask.run()
+        var edges = graph.get("com.example.ExecutorService.execute");
+        if (edges != null) {
+            for (var edge : edges) {
+                assertThat(edge.getTargetMethod()).isNotEqualTo("com.example.SpuriousTask.run");
+            }
+        }
+    }
+
+    @Test
+    void shouldNotTreatValueOfExpressionAsWildcardMatchingAllTransitions() {
+        click.kamil.springstatemachineexporter.analysis.enricher.matching.StrictFqnMatchingEngine engine =
+                new click.kamil.springstatemachineexporter.analysis.enricher.matching.StrictFqnMatchingEngine();
+        
+        click.kamil.springstatemachineexporter.model.Event smEvent =
+                click.kamil.springstatemachineexporter.model.Event.of("PAY", "com.example.OrderEvents.PAY");
+        
+        TriggerPoint triggerPoint = TriggerPoint.builder()
+                .event("OrderEvents.valueOf(someVar)")
+                .build();
+        
+        assertThat(engine.matches(smEvent, triggerPoint)).isFalse();
+    }
 }

state_machine_exporter/src/test/resources/golden/EnterpriseStateMachineConfig/EnterpriseStateMachineConfig.json

@@ -182,6 +182,76 @@
       } ]
     } ],
     "callChains" : [ {
+      "entryPoint" : {
+        "type" : "REST",
+        "name" : "POST /api/enterprise/orders/place",
+        "className" : "click.kamil.examples.enterprise.api.OrderApi",
+        "methodName" : "placeOrder",
+        "sourceFile" : "src/main/java/click/kamil/examples/enterprise/api/OrderApi.java",
+        "metadata" : {
+          "path" : "/api/enterprise/orders/place",
+          "verb" : "POST"
+        },
+        "parameters" : [ ]
+      },
+      "methodChain" : [ "click.kamil.examples.enterprise.api.OrderApi.placeOrder", "click.kamil.examples.enterprise.api.OrderController.placeOrder", "click.kamil.examples.enterprise.service.OrderServiceImpl.place" ],
+      "triggerPoint" : {
+        "event" : "PLACE_ORDER",
+        "className" : "click.kamil.examples.enterprise.service.OrderServiceImpl",
+        "methodName" : "place",
+        "sourceFile" : "src/main/java/click/kamil/examples/enterprise/service/OrderServiceImpl.java",
+        "sourceModule" : null,
+        "stateMachineId" : null,
+        "sourceState" : null,
+        "lineNumber" : 16,
+        "polymorphicEvents" : [ "PLACE_ORDER" ],
+        "external" : false,
+        "constraint" : null
+      },
+      "contextMachineId" : null,
+      "matchedTransitions" : [ {
+        "sourceState" : "NEW",
+        "targetState" : "CHECK_AVAILABILITY",
+        "event" : "PLACE_ORDER"
+      } ]
+    }, {
+      "entryPoint" : {
+        "type" : "REST",
+        "name" : "POST /api/enterprise/orders/{id}/cancel",
+        "className" : "click.kamil.examples.enterprise.api.OrderApi",
+        "methodName" : "cancelOrder",
+        "sourceFile" : "src/main/java/click/kamil/examples/enterprise/api/OrderApi.java",
+        "metadata" : {
+          "path" : "/api/enterprise/orders/{id}/cancel",
+          "verb" : "POST"
+        },
+        "parameters" : [ {
+          "name" : "id",
+          "type" : "String",
+          "annotations" : [ "PathVariable" ]
+        } ]
+      },
+      "methodChain" : [ "click.kamil.examples.enterprise.api.OrderApi.cancelOrder", "click.kamil.examples.enterprise.api.OrderController.cancelOrder", "click.kamil.examples.enterprise.service.OrderServiceImpl.cancel" ],
+      "triggerPoint" : {
+        "event" : "CANCEL_ORDER",
+        "className" : "click.kamil.examples.enterprise.service.OrderServiceImpl",
+        "methodName" : "cancel",
+        "sourceFile" : "src/main/java/click/kamil/examples/enterprise/service/OrderServiceImpl.java",
+        "sourceModule" : null,
+        "stateMachineId" : null,
+        "sourceState" : null,
+        "lineNumber" : 21,
+        "polymorphicEvents" : [ "CANCEL_ORDER" ],
+        "external" : false,
+        "constraint" : null
+      },
+      "contextMachineId" : null,
+      "matchedTransitions" : [ {
+        "sourceState" : "PAID",
+        "targetState" : "CANCELLED",
+        "event" : "CANCEL_ORDER"
+      } ]
+    }, {
       "entryPoint" : {
         "type" : "REST",
         "name" : "POST /api/enterprise/orders/place",

state_machine_exporter/src/test/resources/golden/InheritanceStateMachineConfig/InheritanceStateMachineConfig.json

@@ -37,6 +37,39 @@
       "parameters" : [ ]
     } ],
     "callChains" : [ {
+      "entryPoint" : {
+        "type" : "REST",
+        "name" : "POST /api/v2/orders/submit",
+        "className" : "click.kamil.examples.statemachine.inheritance.api.OrderApi",
+        "methodName" : "submitOrder",
+        "sourceFile" : "src/main/java/click/kamil/examples/statemachine/inheritance/api/OrderApi.java",
+        "metadata" : {
+          "path" : "/api/v2/orders/submit",
+          "verb" : "POST"
+        },
+        "parameters" : [ ]
+      },
+      "methodChain" : [ "click.kamil.examples.statemachine.inheritance.api.OrderApi.submitOrder", "click.kamil.examples.statemachine.inheritance.api.OrderControllerImpl.submitOrder", "click.kamil.examples.statemachine.inheritance.service.ProcessingServiceImpl.doProcess" ],
+      "triggerPoint" : {
+        "event" : "INHERITED_SUBMIT",
+        "className" : "click.kamil.examples.statemachine.inheritance.service.ProcessingServiceImpl",
+        "methodName" : "doProcess",
+        "sourceFile" : "src/main/java/click/kamil/examples/statemachine/inheritance/service/ProcessingServiceImpl.java",
+        "sourceModule" : null,
+        "stateMachineId" : null,
+        "sourceState" : null,
+        "lineNumber" : 15,
+        "polymorphicEvents" : [ "INHERITED_SUBMIT" ],
+        "external" : false,
+        "constraint" : null
+      },
+      "contextMachineId" : null,
+      "matchedTransitions" : [ {
+        "sourceState" : "START",
+        "targetState" : "WORKING",
+        "event" : "INHERITED_SUBMIT"
+      } ]
+    }, {
       "entryPoint" : {
         "type" : "REST",
         "name" : "POST /api/v2/orders/submit",

state_machine_exporter/src/test/resources/golden/MavenOrderStateMachine/MavenOrderStateMachine.json

@@ -120,6 +120,80 @@
         "targetState" : "BUSY",
         "event" : "SUBMIT"
       } ]
+    }, {
+      "entryPoint" : {
+        "type" : "REST",
+        "name" : "POST /maven/orders/submit",
+        "className" : "click.kamil.maven.api.MavenOrderApi",
+        "methodName" : "submitOrder",
+        "sourceFile" : "api-module/src/main/java/click/kamil/maven/api/MavenOrderApi.java",
+        "metadata" : {
+          "path" : "/maven/orders/submit",
+          "verb" : "POST"
+        },
+        "parameters" : [ {
+          "name" : "orderId",
+          "type" : "String",
+          "annotations" : [ "RequestBody" ]
+        } ]
+      },
+      "methodChain" : [ "click.kamil.maven.api.MavenOrderApi.submitOrder", "click.kamil.maven.core.MavenOrderStateMachine.OrderController.submitOrder" ],
+      "triggerPoint" : {
+        "event" : "SUBMIT",
+        "className" : "click.kamil.maven.core.MavenOrderStateMachine.OrderController",
+        "methodName" : "submitOrder",
+        "sourceFile" : "core-module/src/main/java/click/kamil/maven/core/MavenOrderStateMachine.java",
+        "sourceModule" : null,
+        "stateMachineId" : null,
+        "sourceState" : null,
+        "lineNumber" : 40,
+        "polymorphicEvents" : null,
+        "external" : false,
+        "constraint" : null
+      },
+      "contextMachineId" : null,
+      "matchedTransitions" : [ {
+        "sourceState" : "INIT",
+        "targetState" : "BUSY",
+        "event" : "SUBMIT"
+      } ]
+    }, {
+      "entryPoint" : {
+        "type" : "JMS",
+        "name" : "JMS: order.queue",
+        "className" : "click.kamil.maven.api.JmsOrderListener",
+        "methodName" : "onMessage",
+        "sourceFile" : "api-module/src/main/java/click/kamil/maven/api/JmsOrderListener.java",
+        "metadata" : {
+          "protocol" : "JMS",
+          "destination" : "order.queue"
+        },
+        "parameters" : [ {
+          "name" : "message",
+          "type" : "String",
+          "annotations" : [ ]
+        } ]
+      },
+      "methodChain" : [ "click.kamil.maven.api.JmsOrderListener.onMessage", "click.kamil.maven.core.MavenOrderStateMachine.OrderService.onMessage" ],
+      "triggerPoint" : {
+        "event" : "ORDER_EVENT",
+        "className" : "click.kamil.maven.core.MavenOrderStateMachine.OrderService",
+        "methodName" : "onMessage",
+        "sourceFile" : "core-module/src/main/java/click/kamil/maven/core/MavenOrderStateMachine.java",
+        "sourceModule" : null,
+        "stateMachineId" : null,
+        "sourceState" : null,
+        "lineNumber" : 52,
+        "polymorphicEvents" : [ "ORDER_EVENT" ],
+        "external" : false,
+        "constraint" : null
+      },
+      "contextMachineId" : null,
+      "matchedTransitions" : [ {
+        "sourceState" : "BUSY",
+        "targetState" : "DONE",
+        "event" : "ORDER_EVENT"
+      } ]
     } ],
     "properties" : {
       "default" : { }

state_machine_exporter/src/test/resources/golden/OrderStateMachineConfig/OrderStateMachineConfig.json

@@ -81,6 +81,43 @@
         "targetState" : "PROCESSING",
         "event" : "SUBMIT"
       } ]
+    }, {
+      "entryPoint" : {
+        "type" : "REST",
+        "name" : "POST /orders/submit",
+        "className" : "click.kamil.multi.api.OrderApi",
+        "methodName" : "submitOrder",
+        "sourceFile" : "api-module/src/main/java/click/kamil/multi/api/OrderApi.java",
+        "metadata" : {
+          "path" : "/orders/submit",
+          "verb" : "POST"
+        },
+        "parameters" : [ {
+          "name" : "orderId",
+          "type" : "String",
+          "annotations" : [ "RequestBody" ]
+        } ]
+      },
+      "methodChain" : [ "click.kamil.multi.api.OrderApi.submitOrder", "click.kamil.multi.core.OrderController.submitOrder" ],
+      "triggerPoint" : {
+        "event" : "SUBMIT",
+        "className" : "click.kamil.multi.core.OrderController",
+        "methodName" : "submitOrder",
+        "sourceFile" : "core-module/src/main/java/click/kamil/multi/core/OrderController.java",
+        "sourceModule" : null,
+        "stateMachineId" : null,
+        "sourceState" : null,
+        "lineNumber" : 18,
+        "polymorphicEvents" : null,
+        "external" : false,
+        "constraint" : null
+      },
+      "contextMachineId" : null,
+      "matchedTransitions" : [ {
+        "sourceState" : "NEW",
+        "targetState" : "PROCESSING",
+        "event" : "SUBMIT"
+      } ]
     } ],
     "properties" : {
       "default" : { }