collect
Called once for every document matching a query, with the unbased document number.
Note: The collection of the current segment can be terminated by throwing a [ ]. In this case, the last docs of the current [ ] will be skipped and IndexSearcher will swallow the exception and continue collection with the next leaf.
Note: This is called in an inner search loop. For good search performance, implementations of this method should not call StoredFields.document on every hit. Doing so can slow searches by an order of magnitude or more.