[rules-users] How to Capture the rule which does not get executed

[Navdeep Kumar]

Thanks for your reply...could you please tell me what is this myGlobal?

2010/10/13 Michael Anstis <michael.anstis at gmail.com>

> You could store all rules in a global and remove those that execute in an
> AgendaEventListener's activtionCreated event (re-adding those that get
> retracted by Truth Maintenance in the AgendaEventListeners
> activationCancelled event).
>
> //Loads rules
> KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
> kbuilder.add(ResourceFactory.newClassPathResource("myrules.drl"),
> ResourceType.DRL);
> KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
> Collection<KnowledgePackage> kpackages = kbuilder.getKnowledgePackages();
> kbase.addKnowledgePackages(kpackages);
>
> //Get all rules
> for(KnowledgePackage kpackage : kpackages) {
>     for(Rule rule : kpackage.getRules()) {
>         myGlobal.add(rule);
>     }
> }
>
> //The usual suspects
> StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
> ksession.addEventListener(new DefaultAgendaEventListener() {
>     @Override
>     void activationCreated(ActivationCreatedEvent event) {
>         myGlobal.remove(event.getActivation().getRule());
>     }
>
>     @Override
>     void activationCancelled(ActivationCancelledEvent event) {
>         myGlobal.add(event.getActivation().getRule());
>     }
> });
>
> ksession.fireAllRules();
>
> You could also use an AgendaEventListener to better manage the contents of
> the Rule collection for more complex scenarios where Truth Maintenance could
> retract an activation - that the simpler solution above wold
>
>
>
> 2010/10/13 Navdeep Kumar <nkumar at objectwave.com>
>
>> Hi All,
>>
>> I am new to Drools. I am working on a project where nature of rules are
>> dynamic. I want to capture that rule which does not get executed. i need to
>> store that rule because i have to display that rule in the UI.
>>
>> Here is my rule file
>>
>> rule "FrontAxle:Capacity|FrontSuspension:Capacity"
>>
>> when
>>  b:Feature(featureClass.name=="FrontSuspension")
>> c:Feature(featureClass.name=="FrontAxle")
>>  //eval(b.getCapacity() >= c.getCapacity())
>>  then
>>  System.out.println("These are compatible");
>> System.out.println(b.getFeatureClass().getName());
>>
>> availablity.put(b.getFeatureClass().getName()+"-"+c.getFeatureClass().getName(),"12.35");
>> //availablity.put(b.getName()+"-"+c.getName(),new
>> Double(b.getCapacity()));
>>  insert(availablity);
>> end
>>  rule "FrontSuspension:Type|FrontAxle:Type"
>>  when
>>  b:Feature(featureClass.name=="FrontSuspension")
>> c:Feature(featureClass.name=="FrontAxle")
>>  not Feature(b.attributes.Type=="I Beam" && c.attributes.Type=="Multi
>> Link Air")
>> //NOT (FrontAxle.type = "I-Beam" AND FrontSuspension.type = "Multi-link
>> Air") - mounting restriction
>>  then
>> System.out.println("I am in  2");
>> end
>>  rule "FrontAxle:FeatureCode|FrontSuspension:Type"
>> when
>>  b:Feature(featureClass.name=="FrontSuspension")
>> Feature(featureClass.name=="FrontAxle" && code=="002ASW")and not
>> Feature(b.attributes.Type=="Multi Link Air" || b.attributes.Type=="Monoleaf
>> Spring")
>>  //FrontAxle.featureCode = "002ASW" AND NOT (FrontSuspension.type =
>> "Multi-link  Air" OR FrontSuspension.type = "Monoleaf Spring")
>>  then
>> System.out.println("I am in 3");
>> end
>>
>>
>>
>>
>>
>>
>> now if these two objects named FrontAxle and FrontSuspension are
>> compatible then it has to meet all the 3 rules, but if any combination of
>> these objects does not meet one of the rule listed above then i have to
>> store the rule for the displaying purpose that this combination didn't meet
>> this rule thats why they are not compatible. any kind of help will be
>> appreciated.
>>
>>
>>
>> Thanks.
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>
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