Re: [rules-users] multi-factor rule

Sorry to repost again.... But I also realized after sending that if you have to exclude locations A, B, and C from the else rule, then you do not need salience, nor activation group, since all the rules are not mutually exclusive.. This this (much easier too now) rule 'Rule One' when Person (location == 'A', age > 60 ) Then do_something(); end rule 'Rule Two' when Person (location == 'B', age > 70 ) Then do_something(); end rule 'Rule Three' when Person (location == 'C', age > 80 ) Then do_something(); end rule 'Rule Else' when Person (location not in ('A','B','C'), age > 65 ) Then do_something(); end --Armand From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Welsh, Armand Sent: Wednesday, November 23, 2011 12:50 PM To: Rules Users List Subject: Re: [rules-users] multi-factor rule Oh... I misread the pseudo code. I missed that the if (age>60) is inside the if(location=="A") rule. This is easy enough to fix. It's would essentially be the same thing as the otherwise, but in DRL: rule 'Rule One' activation-group 'age-test' salience 300 when Person (location == 'A', age > 60 ) Then do_something(); end rule 'Rule Two' activation-group 'age-test' salience 200 when Person (location == 'B', age > 70 ) Then do_something(); end rule 'Rule Three' activation-group 'age-test' salience 100 when Person (location == 'C', age > 80 ) Then do_something(); end rule 'Rule Else' activation-group 'age-test' when Person (location not in ('A','B','C'), age > 65 ) Then do_something(); end This is a good example why it can be difficult to model rules from procedural language. With a rule, you are reacting to a given condition, but with procedural language waterfall logic, you automatically exclude conditions as you fall through the logic. With rules, there is not waterfall effect. You have to simulate the waterfall logic with explicit exclusions. This is best represented with a lot of if() but no else clauses in procedural language logic. Not the only rule I modified to make this work was my else rule. Regards, Armand From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Ronald Albury Sent: Wednesday, November 23, 2011 11:22 AM To: rules-users(a)lists.jboss.org Subject: Re: [rules-users] multi-factor rule Armand I don't think that works if location=='B' and age=68