let index_empty_texts = ref false
let sample_factor = ref 64
let disable_text_collection = ref false
+let tc_threshold = ref 60000
let query = ref ""
let input_file = ref ""
let spec = [ "-c", Arg.Set(count_only), "counting only (don't materialize the result set)";
"-t", Arg.Set(time), "print timing statistics";
+ "-max-tc", Arg.Set_int(tc_threshold), "set maximum count for which the TextCollection is used";
"-f", Arg.Set_int(sample_factor), "sample factor [default=64]";
"-i", Arg.Set(index_empty_texts), "index empty texts [default=false]";
"-d", Arg.Set(disable_text_collection), "disable text collection[default=false]";