Ok. So you propose a first phase to rewrite a custom metadata handling, and then switch to Jandex only when ORM is ready for it?

Kind of. Jandex is about annotations. We will have to adjust the AnnotationMetadataProvider. We might just end up with a JandexMetadataProvider, especially since with Jandex we can optimize some of the annotation processing we currently do.

The switch for the programmatic configuration is unrelated and as said in this case it is useless to work with annotations (real one, proxies or Jandex backed ones). It is a first step, just unrelated.