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

[viraj]

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 ?




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