Action invoke systeem verbeterd en nette exceptions geintroduceerd.

java/src/pm/Main.java

@@ -4,20 +4,24 @@ import java.util.ArrayList;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
 
+import pm.action.Action;
 import pm.applicatie.voorbeeld.Voorbeeld;
 import pm.application.Application;
 import pm.device.Device;
 import pm.device.example.Example;
 import pm.event.Event;
-import pm.event.ApplicationEvent;
+import pm.exception.ActionException;
+import pm.exception.ActionNotImplementedException;
+import pm.exception.EventException;
 
-public class Main {
-    public static final int SLEEP = 100;
+public class Main extends Application {
+    protected static final int SLEEP = 100;
 
     ArrayList<Application> applicationList;
     ArrayList<Device> deviceList;
     Queue<Event> eventQueue;
 
+    boolean run;
     Application currentApplication;
 
     public Main() {
@@ -42,33 +46,51 @@ public class Main {
         return deviceList.remove(device);
     }
 
-    public void start() {
+    public void start() throws Exception {
         addDevice(new Example(eventQueue));
         Application application = new Voorbeeld();
         addApplication(application);
         currentApplication = application;
+        run();
     }
 
-    public void run() {
-        while (true) {
+    public void run() throws ActionException, EventException {
+        run = true;
+        while (run) {
             if (eventQueue.isEmpty()) {
                 try {
                     Thread.sleep(SLEEP);
                 } catch (InterruptedException e) {}
             } else {
                 Event event = eventQueue.poll();
-                if (event instanceof ApplicationEvent) {
-                    try {
-                        currentApplication.invoke(event.getAction());
-                    } catch (Exception e) {
-                        e.printStackTrace();
-                    }
+                Action action = event.getAction();
+                switch (event.getType()) {
+                    case MAIN:
+                        invoke(action);
+                        break;
+                    case APPLICATION:
+                        try {
+                            currentApplication.invoke(action);
+                        } catch (ActionNotImplementedException e) {
+                            // Todo: log.write(...)
+                        }
+                        break;
+                    default:
+                        throw new EventException("Unknown event type");
                 }
             }
         }
     }
 
+    public void exit() {
+        run = false;
+    }
+
     public static void main(String[] args) {
-        new Main().start();
+        try {
+            new Main().start();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
     }
 }

java/src/pm/action/Action.java

@@ -2,9 +2,12 @@ package pm.action;
 
 import java.lang.reflect.Method;
 
+import pm.exception.ActionNotImplementedException;
+
 public enum Action {
     START ("start"),
-    TEST ("test");
+    TEST ("test"),
+    EXIT ("exit");
 
     protected String action;
 
@@ -12,7 +15,11 @@ public enum Action {
         this.action = action;
     }
 
-    public Method getMethod(Object object) throws Exception {
-        return object.getClass().getMethod(action);
+    public Method getMethod(Object object) throws ActionNotImplementedException {
+        try {
+            return object.getClass().getMethod(action);
+        } catch (SecurityException e) {
+        } catch (NoSuchMethodException e) {}
+        throw new ActionNotImplementedException();
     }
 }

java/src/pm/applicatie/voorbeeld/Voorbeeld.java

@@ -1,20 +1,11 @@
 package pm.applicatie.voorbeeld;
 
-import pm.action.Action;
 import pm.application.Application;
 
 public class Voorbeeld extends Application {
-    public Voorbeeld() {
-        try {
-            invoke(Action.TEST);
-        } catch (Exception e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
-        }
-    }
-
-    public void start() {
+    public void start() throws Exception {
         System.out.println("jeheee!");
+        //throw new Exception("GEK");
     }
 
     public void test() {

java/src/pm/application/Application.java

@@ -1,15 +1,20 @@
 package pm.application;
 
+import java.lang.reflect.InvocationTargetException;
+
 import pm.action.Action;
+import pm.exception.ActionException;
+import pm.exception.ActionInvokeException;
 
 public abstract class Application {
-    public void invoke(Action action) throws Exception {
+    public void invoke(Action action) throws ActionException {
         try {
             action.getMethod(this).invoke(this);
-        } catch (Exception e) {
-            throw new Exception("Failed to invoke action");
-        }
+            return;
+        } catch (IllegalArgumentException e) {
+        } catch (IllegalAccessException e) {
+        } catch (InvocationTargetException e) {}
+        throw new ActionInvokeException();
+        // Todo: informatie doorgeven over wat er precies is foutgegaan
     }
-
-    protected abstract void start();
 }

java/src/pm/device/example/Example.java

@@ -4,8 +4,8 @@ import java.util.Queue;
 
 import pm.action.Action;
 import pm.device.Device;
-import pm.event.ApplicationEvent;
 import pm.event.Event;
+import pm.event.Type;
 
 public class Example extends Device {
     public Example(Queue<Event> eventQueue) {
@@ -13,7 +13,8 @@ public class Example extends Device {
     }
 
     public void initialise() {
-        Event event = new ApplicationEvent(Action.START);
-        eventQueue.add(event);
+        eventQueue.add(new Event(Type.APPLICATION, Action.START));
+        eventQueue.add(new Event(Type.APPLICATION, Action.TEST));
+        eventQueue.add(new Event(Type.MAIN, Action.EXIT));
     }
 }

java/src/pm/event/ApplicationEvent.java

@@ -1,9 +0,0 @@
-package pm.event;
-
-import pm.action.Action;
-
-public class ApplicationEvent extends Event {
-    public ApplicationEvent(Action action) {
-        super(action);
-    }
-}

java/src/pm/event/Event.java

@@ -2,13 +2,19 @@ package pm.event;
 
 import pm.action.Action;
 
-public abstract class Event {
+public class Event {
+    protected Type type;
     protected Action action;
 
-    public Event(Action action) {
+    public Event(Type type, Action action) {
+        this.type = type;
         this.action = action;
     }
-    
+
+    public Type getType() {
+        return type;
+    }
+
     public Action getAction() {
         return action;
     }

java/src/pm/event/Type.java

@@ -0,0 +1,5 @@
+package pm.event;
+
+public enum Type {
+    MAIN, APPLICATION;
+}

java/src/pm/exception/ActionException.java

@@ -0,0 +1,5 @@
+package pm.exception;
+
+public class ActionException extends Exception {
+    protected static final long serialVersionUID = 1L;
+}

java/src/pm/exception/ActionInvokeException.java

@@ -0,0 +1,5 @@
+package pm.exception;
+
+public class ActionInvokeException extends ActionException {
+    protected static final long serialVersionUID = 1L;
+}

java/src/pm/exception/ActionNotImplementedException.java

@@ -0,0 +1,5 @@
+package pm.exception;
+
+public class ActionNotImplementedException extends ActionException {
+    protected static final long serialVersionUID = 1L;
+}

java/src/pm/exception/EventException.java

@@ -0,0 +1,9 @@
+package pm.exception;
+
+public class EventException extends Exception {
+    public EventException(String string) {
+        super(string);
+    }
+
+    protected static final long serialVersionUID = 1L;
+}