[rules-users] Runing Rules in Two Phases ( using AgendaFilters ) with inference

[Wolfgang Laun]

Use agenda groups, not agenda filters. The latter will fire your rules
as "blanks" whereas agenda groups are just the thing for letting rules
fire in controlled stages.
-W

On 12/08/2013, viraj <mayuraviraj at gmail.com> wrote:
> Hi all,
>
> I have a system which i'm running to learn drools. In this system I have
> two
> sets of rules. First one is eligible rules and other set is selection rules
> which depend on eligible rules. So the system first evaluate eligible rules
> and then add those results to facts in-order to use in selection rules.
> System is working fine in this way. Now  I want to run this with two
> phases.
> i.e without using fireAllRules() , I need to run eligible rules ( which are
> in rule package "rule.eligible" ) using AgendaFilter and then later run the
> selection rules which are in "rule.selection" package. The problem is even
> though eligible rules activate selection rules , in second phase selection
> rules won't run. I checked rule execution with KnowledgeRuntimeLogger. This
> shows eligible rules correctly activate selection rules but later when i
> run
> selection rules only , those activated rules do not get executed. I really
> want to rule this in two phases since in some scenarios, I only need
> eligible objects. Is there a another way to achieve this kind of work ?
>
> Ex : Eligible Rule
> package rule.eligible
> rule "Eligible Rule 1 - 4 "
> no-loop true
> when
>  $evaluationResults : EvaluationResults( valids not contains "4" );
>  UserProfile( userState == UserState.TEST ,  status == 1 )
> then
>  modify( $evaluationResults ) { addIntoEvaluated( 4 + ""  ) } ;
> end
>
>
> Ex : Selection Rule
> package rule.selection
> rule "Selection Rule - 3"
> no-loop true
> when
>  $evaluationResults  : EvaluationResults( validMap not contains "3" ,
> valids contains "4"  )
> then
>  modify( $evaluationResults ){ addIntoEvaluatedMap("3", "21","23")}
> end;
>
> I'm executing rules in following way.
> To run eligible rules.
> statefulKnowledgeSession.fireAllRules(DroolsHelper.getActivatedRulesFromRuleStartWith("Eligible
> Rule"));
>
> To run selection rules.
> statefulKnowledgeSession.fireAllRules(DroolsHelper.getActivatedRulesFromRuleStartWith("Selection
> Rule"));
>
> Method DroolsHelper.getActivatedRulesFromRuleStartWith
>     public static AgendaFilter getActivatedRulesFromRuleStartWith(final
> String startWith) {
>         AgendaFilter filter = new AgendaFilter() {
>             public boolean accept(Activation activation) {
>                 if (activation.getRule().getName().startsWith(startWith)) {
>                     return true;
>                 }
>                 return false;
>             }
>         };
>         return filter;
>     }
>
> Thanks in advance
>
>
>
>
>
> --
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> http://drools.46999.n3.nabble.com/Runing-Rules-in-Two-Phases-using-AgendaFilters-with-inference-tp4025458.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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