Does anybody know if any of the document databases offers good search features? I see RavenDb is using Lucene.net to some degree but I am looking for a more integrated search experience like the Truffler.net client api are giving you. They have built a .net client on top of Elasticsearch which gives great search features.
I think it would be a killer feature if any of the document database clients could offer similar features directly through their client api but I am not sure if that is even feasible.