> 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
>