Re: [rules-users] Working Memory and agenda-group

Agenda-groups segment the agenda and not the working memory :) Probably that is part of your confusion. 2011/12/29 Mike Key <mikey(a)zenbitz.com&gt;: > I am a fairly new Drools user and am trying to understand how working memory > is segmented when using agenda groups. I have an agenda-group that has > focus set immediately from the session as follows with a few objects being > inserted: > > ksession.insert(objectA); > ksession.insert(objectB); > ksession.getAgenda().getAgendaGroup("Foo").setFocus(); > > I have 2 rules simplified down to illustrate my confusion. The first rule > simply sets some default values evaluated in the second rule if objectA > exists. In the example that works I set the defaults in the RHS explicitly. > However I want to use these defaults from different agenda-groups, so when > I put them in a function, the second rule never fires, the activation is > created for the first rule but never the second. Can someone tell me why > the use of a function seems to alter the truth of the rule? > > THIS WORKS: > > declare SomeDefault > minValueA : Integer > minValueB : Double > maxValueB : Double > end > > rule "Check Object A and Set Default" > agenda-group "Foo" > salience 100 > when > $a : ObjectA() > then > default = new SomeDefault() > default.minValueA = 100 > default.minValueB = 20.0 > default.maxValueB = 20000.0 > insert(default) > end > > rule "Use the defaults" > agenda-group "Foo" > salience 100 > when > $default : SomeDefault() > then > System.out.println("Default minA=" + $default.minValueA) > end > > THIS DOES NOT WORK: > > declare SomeDefault > minValueA : Integer > minValueB : Double > maxValueB : Double > end > > rule "Check Object A and Set Default" > agenda-group "Foo" > salience 100 > when > $a : ObjectA() > then > insertDefault(drools.getWorkingMemory()) > end > > rule "Use the defaults" > agenda-group "Foo" > salience 90 > when > $default : SomeDefault() > then > System.out.println("Default minA=" + $default.minValueA) > end > > function void insertDefault(WorkingMemory workingMemory) { > SomeDefault default = new SomeDefault(); > default.setMinValueA(100); > default.setMinValueB(20.0); > default.setMaxValueB(20000.0); > workingMemory.insert(default); > } > > In the latter (non-working) example the first rule activates and then drools > returns, it never even attempts to try to fire the second rule. However in > the working example BOTH rules fire as I would expect. I am guessing this > is a simple misunderstanding on my part. Any assistance in understanding > why this nuance doesn't seem to work would be greatly appreciated. > > Thanks. > > MiKey > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -- - CTO @ http://www.plugtree.com - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jugargentina.org - Co-Founder @ http://www.jbug.com.ar - Salatino "Salaboy" Mauricio - _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users