I'd like to have an up-to-date map from unique-ids to lucene internal doc-nums. This will allow me to create a custom filter based on the result of an external process (like mysql). There doesn't seem to be a straightforward efficient way AFAIK. I'll be looking for a way but any help or guidance would be appreciated.
Specifically I am looking to integrate mysql spatial queries (which will return ids) with lucene filters. I believe I can use a custom HitCollector for this purpose (which only retains certain documents) but this seems less optimal. - Jae
