Something that'd be very useful is dynamic queries for reindexing in jpa. For example, lets say I have an entity that has a 'expiryDate' field. I don't want to index anything that has already expired. So when reindexing, the set of entities returned depends on the current time. So what'd be nice is if I could register some kind of object that would be responsible for returning a Query object to compass, which compass can then use. So instead of the select query being a String in EntityInformation, it were an object that returned a Query object (default implementation would be the way it works now), that could be plugged in by users to specify criteria at runtime for entity info.