mlesikov · April 20, 2012 08:38 · Apr 20, 2012 · Apr 20, 2012
diff --git a/gistfile1.java b/gistfile1.java
@@ -1,7 +1,5 @@
 public class ChangeLoggers {
 
-customer, @Named("CUSTOMER_NAME") String customerName);
-
   public static <T> T create(Class<? extends ChangeLogger> clazz, final CurrentUser currentUser, final ChangeLogBase base) {
 
     return (T) Proxy.newProxyInstance(clazz.getClassLoader(), new Class<?>[]{clazz}, new InvocationHandler() {

diff --git a/gistfile1.java b/gistfile1.java
@@ -0,0 +1,105 @@
+public class ChangeLoggers {
+
+customer, @Named("CUSTOMER_NAME") String customerName);
+
+  public static <T> T create(Class<? extends ChangeLogger> clazz, final CurrentUser currentUser, final ChangeLogBase base) {
+
+    return (T) Proxy.newProxyInstance(clazz.getClassLoader(), new Class<?>[]{clazz}, new InvocationHandler() {
+
+      public Object invoke(Object o, Method method, Object[] objects) throws Throwable {
+
+        Annotation[][] annotations = method.getParameterAnnotations();
+
+     ...
+
+        ChangeLog changeLog = ChangeLog.aNewChangeLog().type(type).createdFrom(currentUser.email()).createdOn(currentUser.time()).build();
+
+
+        Object parent = null;
+
+        int index = 0;
+
+        for (Annotation[] annotation : annotations) {
+
+          if (annotation.length > 0 && annotation[0] instanceof Named) {
+
+            Named named = (Named) annotation[0];
+
+            //check the value of the tag
+            if (objects[index] != null && !Strings.empty(objects[index].toString())) {
+              changeLog.tag(named.value(), objects[index].toString());
+            }
+
+          } else if (annotation.length > 0 && annotation[0] instanceof LogParent) {
+
+            parent = objects[index];
+
+          }else if (annotation.length > 0 && annotation[0] instanceof ChangeLogModule.ChangeLogAction){
+
+            ChangeLogModule.ChangeAction actualAction = (ChangeLogModule.ChangeAction) objects[index];
+                             changeLog.setMessageKey(actualAction.getMessageKey());
+          }
+
+          index++;
+
+        }
+
+        if (parent != null) {
+          base.save(changeLog, parent);
+        }
+
+        return changeLog;
+      }
+    });
+  }
+} 
+
+
+//the change log action interface that will represent the actions that are log
+  public interface ChangeAction {
+
+    String getMessageKey();
+  }
+
+  @Retention(RetentionPolicy.RUNTIME)
+  @Target({ElementType.TYPE, ElementType.PARAMETER})
+  @BindingAnnotation
+  //annotation that indicate the
+  public @interface ChangeLogAction {
+
+  }
+
+injector = Guice.createInjector(new AbstractModule() {
+     ...
+      @Provides
+      public MyChangeLogger getMyChangeLogger(CurrentUser currentUser, ChangeLogBase base){
+        return ChangeLoggers.create(MyChangeLogger.class,currentUser,base);
+      }
+...
+    }); 
+
+
+public interface MyChangeLogger extends ChangeLogger {
+
+    ChangeLog log(@ChangeLogAction ChangeLogModule.ChangeAction action, @Named("DEVICE") Long id, @Named("DEVICE_IDENTIFICATION") String identificationNumber, @Named("CONTRACT") String lastReferentContractCode, @LogParent Device device);
+
+  }
+
+
+
+  //implementation  that shows the concrete action
+  public class DeviceInstallationAction implements ChangeLogModule.ChangeAction {
+
+    public String getMessageKey() {
+      return "installDevice";
+    }
+  }
+
+  @Test
+  public void testName() throws Exception {
+    MyChangeLogger logger = injector.getInstance(MyChangeLogger.class);
+
+    ChangeLog changeLog = logger.log(new DeviceInstallationAction(), 1l, "serial number", "1234567", device);
+
+    assertEquals("installDevice", changeLog.getMessageKey());
+  }
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