DefaultViewsRepositoryStorage: index by ViewId (not string)

#511

src/main/java/de/metas/ui/web/view/DefaultViewsRepositoryStorage.java

@@ -35,7 +35,7 @@
 // NOTE: don't add it to spring context! i.e. don't annotate it with @Component or similar
 /* package */final class DefaultViewsRepositoryStorage implements IViewsIndexStorage
 {
-	private final Cache<String, IView> views = CacheBuilder.newBuilder()
+	private final Cache<ViewId, IView> views = CacheBuilder.newBuilder()
 			.expireAfterAccess(1, TimeUnit.HOURS)
 			.removalListener(notification -> onViewRemoved(notification))
 			.build();
@@ -61,19 +61,19 @@ private final void onViewRemoved(final RemovalNotification<Object, Object> notif
 	@Override
 	public void put(@NonNull final IView view)
 	{
-		views.put(view.getViewId().getViewId(), view);
+		views.put(view.getViewId(), view);
 	}
 
 	@Override
 	public IView getByIdOrNull(@NonNull final ViewId viewId)
 	{
-		return views.getIfPresent(viewId.getViewId());
+		return views.getIfPresent(viewId);
 	}
 
 	@Override
 	public void removeById(@NonNull final ViewId viewId)
 	{
-		views.invalidate(viewId.getViewId());
+		views.invalidate(viewId);
 	}
 
 	@Override