Re: [rules-users] A basic doubt about Drools Fusion

Thank you, Esteban. You are right! If I insert two events A: rulesTest.addEventA("123"); rulesTest.addEventA("456"); The second call of fireAllRules() activates the rule for the first object: Event inserted com.epidataconsulting.drools.model.EventA Event A 123 at Fri Dec 07 11:54:21 ART 2012 Event inserted com.epidataconsulting.drools.model.EventA But not for the second. How I can do to correct this behavior? Thanks! Adrian 2012/12/7 Esteban Aliverti <esteban.aliverti(a)gmail.com&gt; > It could be the case, and I'm guessing here, that the AgendaEventListener > is called just before the activation is placed into the agenda. So, the > call to fireAllRules() finds an empty agenda. What you could do to check if > this is what is happening, is to insert 2 EvenA objects. The second call of > fireAllRules() should fire the activation of the first object (and you will > miss the activation of the second). > > Best Regards, > > > > > XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX > > Esteban Aliverti > - Blog @ http://ilesteban.wordpress.com > > > > On Fri, Dec 7, 2012 at 1:55 PM, Adrián Paredes < > adrianp(a)epidataconsulting.com&gt; wrote: > >> Hi all: >> >> I have a very basic doubt about Drools Fusion. >> >> I have two simple Java classes: >> >> EventA { >> String id; >> Date timestamp; >> Long duration; >> } >> >> EventB { >> String id; >> Date timestamp; >> Long duration; >> } >> >> I have a DRL file, where I declare this two classes as Events: >> >> declare EventA >> @role(event) >> @timestamp(timestamp) >> @duration(duration) >> end >> >> declare EventB >> @role(event) >> @timestamp(timestamp) >> @duration(duration) >> end >> >> I have a simple rule: >> >> rule "Basic Rule" >> dialect 'mvel' >> when >> $eventA: EventA($aId: id) from entry-point "time stream" >> then >> System.out.println("Event A " + $aId + " at " + $eventA.timestamp); >> end >> >> Finally, I have a test that starts a StatefulKnowledgeSession in STREAM >> mode, register an eventLister in the session in order to fire the rules >> when an event arrives: >> >> ksession.addEventListener(new DefaultAgendaEventListener() { >> @Override >> public void activationCreated(ActivationCreatedEvent event) { >> ((StatefulKnowledgeSession) >> event.getKnowledgeRuntime()).fireAllRules(); >> } >> }); >> >> And then the test insert in the "time stream" entry-point an instance of >> EventA with duration of 10 miliseconds, as follows: >> >> EventA eventA = new EventA(); >> eventA.setId("123"); >> eventA.setTimestamp(new Date()); >> eventA.setDuration(10L); >> ksession.getWorkingMemoryEntryPoint("time stream").insert(event); >> >> At the end of the test, I have an sleep of 2 seconds just in case. >> >> I don't understand why the "Basic Rule" never fires. >> >> But if I add another condition to the same rule, something like this: >> >> rule "Basic Rule" >> dialect 'mvel' >> when >> $eventA: EventA($aId: id) from entry-point "time stream" >> not EventB($aId == id, this after [0s,5s] $eventA) from entry-point >> "time stream" >> then >> System.out.println("Event A " + $aId + " at " + $eventA.timestamp); >> end >> >> The rules fires and I see this message in console: >> >> Event A 123 at Fri Dec 07 09:48:59 ART 2012 >> >> I don't understand why the first rule, that is more open, don't fire, >> and the second rule, that is more restrictive, fires without problems. >> >> Thank you very much! >> >> Greetings, >> Adrian. >> >> -- >> *Epidata Consulting | Deploying Ideas >> Ing. Adrián M. Paredes | Arquitecto Desarrollador >> adrianp(a)epidataconsulting.com | Cel: (54911) 3297 1713 >> >> ---------------------------------------------------------------------------------------------------------------------------- >> Argentina: Maipú 521 Piso 1 Of. A | Buenos Aires | Of: (5411) 5031 0060 >> Chile: Apoquindo 3600 Piso 7 y 9 | Las Condes - Santiago | Of: (+56) 2 >> 495 8450 >> >> --------------------------------------------------------------------------------------------------------------------------- >> www.epidataconsulting.com >> Linkedin <http://bit.ly/epidatalinkedin> | Facebook<http://www.facebook.com/epidata.consulting> >> | Twitter <http://twitter.com/epidata> >> * >> >> _______________________________________________ >> 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 > > -- *Epidata Consulting | Deploying Ideas Ing. Adrián M. Paredes | Arquitecto Desarrollador adrianp(a)epidataconsulting.com | Cel: (54911) 3297 1713 ---------------------------------------------------------------------------------------------------------------------------- Argentina: Maipú 521 Piso 1 Of. A | Buenos Aires | Of: (5411) 5031 0060 Chile: Apoquindo 3600 Piso 7 y 9 | Las Condes - Santiago | Of: (+56) 2 495 8450 --------------------------------------------------------------------------------------------------------------------------- www.epidataconsulting.com Linkedin <http://bit.ly/epidatalinkedin> | Facebook<http://www.facebook.com/epidata.consulting> | Twitter <http://twitter.com/epidata> * _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users