what version of drools are you using? because in Drools 5.0 fusion is in charge of temporal evaluations. Greetings
2009/4/30 <[email protected]>: > > I have a need to "expire" some facts based on time. In other words, if an > event occurs some time and if sufficient time has gone by, the fact should > become inonsequential and be retracted. Here is my simple rule to do this: > > rule"Retract expired facts" > dialect"mvel" > // salience -5 > when > e1 : Event (code == "LOGON", status == "ACTIVE") > eval ((getCurrentTimeStamp ()- e1.getLongTimeStamp()) > 100) > then > System.out.println( "Retracting expired event with Timestamp: " + > e1.longTimeStamp ); > retract (e1); > end > > This does not seem to work because the "eval" method does not evaluate the > rule every cycle. And, there is no other change to the fact (event) to force > the rule to re-evaluate the fact. Is there a way to make "eval" in the LHS > evaluate every cycle? Is there any other method? > > I would greatly appreciate any ideas. > > Thanks, > > Ravi. > > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users > > -- - Salatino Mauricio - _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
