[rules-users] expert: usage of ruleflow-groups

[Wolfgang Laun]

2010/5/5 miguel machado <mls.machado at gmail.com>:
> Hi again,
> Thank you for clearing that up. I didn't think it worked that way because
> i've tried it before and it didn't work. Anyway, according to what you're
> saying...
> * this is the stack as soon as i insert my objects: | MAIN |
> * this is the stack as soon as i setFocus on a specific agenda-group: |
> FOCUSED_GROUP | MAIN | (from left to right)
> * as soon as all activations from FOCUSED_GROUP fire, that agenda-group is
> popped out of the stack and the rule engine fires the remaining activations
> from MAIN
> Is this the way it works? I've tried this before with no success. I get
> rules firing from agenda-groups that *are not focused before* (besides MAIN,
> of course). Maybe this has something to do with the rules being declared in
> XML? Or some kind of bug?

If you don't have auto-focus, rules from other agenda groups should not fire.
XML should not matter. A bug might be possible, e.g., due to misinterpretation
of the rules in XML.
-W

> Thank you.
> _ miguel
>
>
>
> On Wed, May 5, 2010 at 6:40 AM, Wolfgang Laun <wolfgang.laun at gmail.com>
> wrote:
>>
>> > @Wolfgang:
>> > My problem is that i cannot have the different rule groups stacked. I
>> > may do
>> > as you suggested, but i'll have rules firing from other agenda-groups
>> > after
>> > the first agenda-group activations are all gone (because they go into
>> > the
>> > stack as well, right?).
>>
>> No, no, no! Nothing goes on the stack unless you setFocus()!
>>
>> What i'm looking for is a way to isolate the
>> > execution and just fire the rules within a specific set (aka just one
>> > group). Does this make any sense?
>>
>> This is *exactly* what my sketchy statement sequence does, in
>> an existing application.
>> -W
>>
>> > Thank you for your support. I appreciate all the help i can get.
>> > _ miguel
>> >
>> >
>> >
>> > On Tue, May 4, 2010 at 4:46 PM, Wolfgang Laun <wolfgang.laun at gmail.com>
>> > wrote:
>> >>
>> >> I've been using agenda groups without any trouble for a similar
>> >> problem,
>> >> doing
>> >>  setFocus( ... );
>> >>  insert( ... );... insert( ... );
>> >>  fireAllRules();
>> >> repeatedly.
>> >>
>> >> You don't have to be afraid of the focus stack growing indefinitely:You
>> >> control
>> >> the "push" (setFocus()), and if an agenda group's activations are all
>> >> gone, the
>> >> group is automatically popped from the stack.
>> >>
>> >> -W
>> >>
>> >> 2010/5/4 Miguel Machado <mls.machado at gmail.com>:
>> >> > Hi there,
>> >> > I'm having some trouble implementing the desired workflow of rule
>> >> > firing
>> >> > in
>> >> > an application using drools expert. I've read the thread about the
>> >> > difference between ruleflow groups and agenda groups, but it is still
>> >> > unclear to me how to achieve what i need.
>> >> > What i intend to have is the ability to fire a specific set of rules
>> >> > according to the object i'm inserting into the ksession.
>> >> > I do not want to use agenda-groups because it stacks all the agenda
>> >> > groups
>> >> > declared on the rule file (as far as i understand) and therefore it
>> >> > may
>> >> > fire
>> >> > activations i do not want to be fired. Instead, i want to isolate
>> >> > them
>> >> > completely. I tried using ruleflow groups for this, but i cannot find
>> >> > a
>> >> > way
>> >> > to activate a specific group programmatically, before calling
>> >> > fireAllRules(), the way i can with agenda-groups (setFocus() method).
>> >> > That being said, i'm asking for help in trying to use either one of
>> >> > ruleflow/agenda groups or even both in order to get things working
>> >> > the
>> >> > way i
>> >> > described.
>> >> > Thanks in advance,
>> >> > _ miguel
>> >> >
>> >> > _______________________________________________
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>> >> >
>> >> >
>> >>
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>> >
>> >
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