[rules-users] one question about asserting facts

Hi all, I am trying to assert (or insert) a large number of facts (or DataClass objects) in to a session, what i am doing right now is to insert them one by one as --------------------- while (line != null) { str = bufRead.readLine(); session.insert(new DataClass(line, str)); line = bufRead.readLine(); } --------------------- My question: is there an efficient way to insert all facts at once, so that it takes less time? Thanks, Senlin