[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.

(And: please refrain from posting twice.)

-W

On 12/08/2013, viraj <mayuraviraj at gmail.com> wrote:
> Hi all,
>
> I have problem with using AgendaFilters to select rules when rules written
> to use inference. First I will try to explain the situation. In my project
> I
> have two sets of rules. First set is eligible rules which run to evaluate
> eligibility of products and second phase is selection rules which run on
> results of eligible products.
>
> Ex : Eligible Rule
> package rule.eligible
> rule "Eligible Rule 1 - 3 "
> no-loop true
> when
> $evaluationResults : EvaluationResults( validProducts not contains "3" );
> UserProfile( status == 1 ) // other conditions
> then
>   modify( $evaluationResults ) { addIntoEvaluatedProducts(3 + ""  ) } ; //
> Add into validProducts HashSet
> end
>
> Ex: Selection Rule
> package rule.selection
> rule "Selection Rule - 1"
> no-loop true
> when
>   $evaluationResults  : EvaluationResults( validOffers.keySet not contains
> "1" ,  validProducts contains "3" ) // Other conditions
> then
>   modify( $evaluationResults ){ addIntoEvaluatedOffers("1", "3")} //Add
> into
> validOffers Map
> end;
>
> when i use fireAllRule() the above rules run correctly. Now I want to run
> only eligible rules and later selection rules since in some scenarios I
> need
> only valid products. So I tried using following code
>
> Run only eligible rules which rule name start with "Eligible Rule"
> statefulKnowledgeSession.fireAllRules(DroolsHelper.getActivatedRulesFromRuleStartWith("Eligible
> Rule"));
>
> Run only selection rules which rule name start with "Selection Rule"
> 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) {
>                 FactHandle objects =
> activation.getPropagationContext().getFactHandle() ;
>                 if (activation.getRule().getName().startsWith(startWith)) {
>                     return true;
>                 }
>                 return false;
>             }
>         };
>         return filter;
>     }
>
> I checked rule execution using KnowledgeRuntimeLogger. It shows eligible
> rules correctly activate selection rules but when I run selection rules
> only, it does not get executed. Is there a way do this kind of task ?
>
>
>
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/Runing-Rules-in-Two-Phases-using-AgendaFilters-with-inference-tp4025460.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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