[rules-users] how to use drools4 implements similar function like drools5M?

Hi EveryBody,I want to write code like this in drools4,but I got a problem that no class defined as FactType, how to refactor it ? RuleAgent agent = RuleAgent.newRuleAgent("/rules.properties"); RuleBase rb = agent.getRuleBase(); //constructor a model , FactType appType = rb.getFactType("test.MerInfo"); Object merinfo = appType.newInstance(); appType.set(merinfo, "resp_code", "00"); appType.set(merinfo, "avg_amt", 5000.0); StatelessSession ss = rb.newStatelessSession(); ss.execute(merinfo);