# File lib/ferret/index.rb, line 513
513:     def flush()
514:       @dir.synchronize do
515:         @searcher.close if @searcher
516:         @reader.close if @reader
517:         @writer.close if @writer
518:         @reader = nil
519:         @writer = nil
520:         @searcher = nil
521:       end
522:     end