"Missing creator for ui event" exception

[fan-tom]

I try to use NeovimStreamNotificationHandler to get ui notifications.

var notificationHandler = new NeovimStreamNotificationHandler(reactiveRpcStreamer);
notificationHandler.uiEvents().subscribe(subscriber);

but get such exception when such notification is received

398 [pool-1-thread-1] INFO com.ensarsarajcic.neovim.java.corerpc.client.PackStream  - Notification received: NotificationMessage{name='redraw', arguments=[[option_set, ...
422 [ForkJoinPool.commonPool-worker-11] ERROR com.ensarsarajcic.neovim.java.notifications.NeovimStreamNotificationHandler  - Missing creator for ui event {}option_set
java.lang.NullPointerException
	at com.ensarsarajcic.neovim.java.notifications.NeovimStreamNotificationHandler.lambda$eventFromRawData$4(NeovimStreamNotificationHandler.java:124)
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)

It is thrown here

// com.ensarsarajcic.neovim.java.notifications.NeovimStreamNotificationHandler#eventFromRawData
...
return NotificationCreatorCollector.getUIEventCreators().get(name).apply(o);
...

because getUIEventCreators() returns empty dict.
Seems that it cannot find ui event model classes using reflection

[esensar]

Not sure what might go wrong there...
Which version are you using?
Do you use any kind of code obfuscator, that might break reflection?

[fan-tom]

No, I don't use any obfuscation, it seems to be reflection issue, but I don't fully understand what it is. I, however, managed to fix it locally, replacing class finding algorithm with this one https://stackoverflow.com/a/58773038/7286194. One of the differences between it and your original algo is that new one uses java.nio.file.FileSystem, while old one uses java.io.File. I'm not an expert in java/jvm, that's why I cannot say, why old method doesn't work and new one does.
My platform is macOS Mojave 10.14.6, jdk 11.0.1, if it says something. Feel free to request any additional info. I also can make PR with my fix, but I think we must understand what is the problem first
PS: I use 0.2.0-SNAPSHOT, but can replay using 0.1.6 too

[esensar]

Feel free to make a PR. I am not really sure why is that failing, I will try and investigate.

[esensar]

Apparently original solution had an issue if path to the project had spaces in it. In my case there were no spaces, but once I added spaces to the path, I could reproduce the issue.

Issue found in comment to this solution: https://stackoverflow.com/a/520344/6721708

By changing code per first comment, it worked:

  I had a problem with this if my path included spaces. The URL class was escaping spaces to %20, but the new File() 
  constructor treated that as a literal percent sign two zero. I fixed it by changing the dirs.add(...) line to this: dirs.add(new 
  File(resource.toURI())); This also meant I had to add URISyntaxException to the throws clause of getClasses 

If you want you can make a PR to change it to nio package, otherwise I will fix it in a couple of days.