[rules-users] Can we works on fact of "dynamic Map" instead of POJO?

I have a requirement of run rules on dynamic map instead of POJO, for example: *when Map(* TransCode == "LOGIN" , userName == "wangzx", password == "123456" ) *then doSth1() when Map( *TransCode = "SaveOrder" userName == "wangzx" category == "Book") *then doSth2() * the Fact is not a Java Bean, but a dynamic map<String, Object>, so the TransCode == "Login" is what we means map("TransCode") == "Login". By using map insteam of POJO, we can build a rules run on the message dispatch, since there is a lot of Message Types, and each message type has different schema, so using dynamic types is more flexible than POJO. Can someone tell me how can it be supported in drools? Very thanks.