From: techy <techluver007(a)gmail.com&gt; Subject: [rules-users] no-loop & lock-on-active clarification To: rules-users(a)lists.jboss.org Date: Tuesday, November 11, 2008, 10:25 AM I tried following rules as given below and result are:(assumes facts which I tried are qualified for both rules) 1. when lock-on-active used with both rule, only rule "1 precondition" got executed for all facts. 2. when no-loop used with both rules, infinite loop 3. when lock-on-active for rule "1 precondition" and no-loop for rule "1 main condition" used, both rule got fired correctly. 4. for vice versa of 3 scenario, only rule "1 precondition" got executed for all facts. Can someone please clarify about this scenario and also diff between no-loop & lock-on-active? when we should use one and when should not? I went thru documentation and still could not understand the difference. public class Foo { private Set<String> preConditionPassedRules ; private Integer f1; private Integer f2; } rule "1 precondition" salience 100 when foo : Foo( f1 != null && f2 != null) then foo.addPreconditionPassedRule("1 precondition"); update(foo) end rule "1 main condition" salience 100 when foo : Foo( preconditionPassedRule contains "1 precondition",f1 > 1000,f2 < 1000) then #actions end -- View this message in context: http://www.nabble.com/no-loop---lock-on-active-clarification-tp20443036p2... Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Thanks Greg. >As for lock-on-active, it should be used in conjunction with a ruleflow-group or agenda-group. It's >basically no-loop for the entire group, as I understand it. I don't see either a ruleflow-group or >agenda-group defined for those rules. Did you do that? - no. I'm not using a ruleflow-group or agenda-group. 1. Even if I dont use agenda-group explicitly, all rules are in "main" agenda group right. shouldn't we use lock-on-active without explicit agenda-group or rule-flow group? I can understand result #1 & #2. It would be nice if some one clarify result # 3 & #4 of my example. here both rules have 'update'. > 3. when lock-on-active for rule "1 precondition" and no-loop for rule "1 > main condition" used, both rule got fired correctly. > 4. when lock-on-active for rule "1 maincondition" and no-loop for rule "1 > precondition" used, only rule "1 , then only precondition" got executed > for all facts. Thanks again! Greg Barton wrote: > > You certainly need no-loop for rule "1 precondition" as it stands because > the Foo is updaetd, but not in a way that prevents the rule from firing > again. One way to prevent that would be to put a condition in the rule > that is the antithesis of some update you make: > > rule "1 precondition" > when > foo : Foo( preconditionPassedRule not contains "1 precondition", f1 != > null, f2 != null) > then > foo.addPreconditionPassedRule("1 precondition"); > update(foo) > end > > As for lock-on-active, it should be used in conjunction with a > ruleflow-group or agenda-group. It's basically no-loop for the entire > group, as I understand it. I don't see either a ruleflow-group or > agenda-group defined for those rules. Did you do that? > > --- On Tue, 11/11/08, techy <techluver007(a)gmail.com&gt; wrote: > >> From: techy <techluver007(a)gmail.com&gt; >> Subject: [rules-users] no-loop & lock-on-active clarification >> To: rules-users(a)lists.jboss.org >> Date: Tuesday, November 11, 2008, 10:25 AM >> I tried following rules as given below and result >> are:(assumes facts which >> I tried are qualified for both rules) >> >> 1. when lock-on-active used with both rule, only rule >> "1 precondition" got >> executed for all facts. >> 2. when no-loop used with both rules, infinite loop >> 3. when lock-on-active for rule "1 precondition" >> and no-loop for rule "1 >> main condition" used, both rule got fired correctly. >> 4. for vice versa of 3 scenario, only rule "1 >> precondition" got executed for >> all facts. >> Can someone please clarify about this scenario and also >> diff between no-loop >> & lock-on-active? when we should use one and when >> should not? >> I went thru documentation and still could not understand >> the difference. >> >> public class Foo >> { >> private Set<String> preConditionPassedRules ; >> >> private Integer f1; >> private Integer f2; >> >> } >> >> rule "1 precondition" >> salience 100 >> >> when >> foo : Foo( f1 != null && f2 != null) >> then >> foo.addPreconditionPassedRule("1 >> precondition"); >> update(foo) >> >> end >> >> rule "1 main condition" >> salience 100 >> >> when >> foo : Foo( preconditionPassedRule contains "1 >> precondition",f1 > 1000,f2 >> < 1000) >> then >> #actions >> >> end >> >> -- >> View this message in context: >> http://www.nabble.com/no-loop---lock-on-active-clarification-tp20443036p2... >> Sent from the drools - user mailing list archive at >> Nabble.com. >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > -- View this message in context: http://www.nabble.com/no-loop---lock-on-active-clarification-tp20443036p2... Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users