[rules-users] execute Rules selectively

Fri Mar 25 10:47:26 EDT 2011

Why do you need to worry about only executing rules that are applicable to
X.A?

The Rules Engine is designed to narrow matches to only those rules that are
applicable and cause the appropriate activations.

You can accomplish what you need with agenda-groups; your code would know
only X() needs validating and execute the activations on agenda-group that
contains rules for validating X().

However the logic you write to determine which agenda-group needs to be
activated is already part of the Rules Engine: When you insert X() into WM
only rules with X() as a pattern are matched.

My advice would be to have all rules in WM at once and not worry about which
should be executed. Insert your Facts that need validating and call
fireAllRules(); then retrieve your validation messages.

With kind regards,

Mike

On 25 March 2011 14:35, Benson Fung <benson.redhat at gmail.com> wrote:

> I see what you mean.  You are right, that means when the fact A is
> inserted , the rule engine will come up an agenda which is A()
> related, right?
>
> OK, let's take in another way.  If A is one of a variable of a Fact
> say X(), then only the 3 rules evaluate the A variable of the Fact X()
> in the 1000 rules of rulebase.  How can I only execute the 3 rules
> programmatically?
>
> In fact, the problem comes from the legacy window program.  When we
> develop the old window program, we can add lots of field validation of
> the field by right clicking the edit box, right?  Right now, we need
> to migrate to java-based solution and use the BRMS to store those
> validation rules.  The above 3 rules were put in the validation rules
> of the edit field of the window program, and now I put these 3 rules
> into the BRMS and revamp the window program frontend to whatever
> html/GWT/ZK frontend now.
>
> If cannot get what I mean, please tell me and I try to describe again.
>
>
> Thank you very much and thanks for your patience.
>
>
> Benson
>
> On Fri, Mar 25, 2011 at 9:39 PM, Mauricio Salatino <salaboy at gmail.com>
> wrote:
> > so you don't need to worry about them to fire...
> > Drools will evaluate only the meaningful rules for the fact A(). There is
> no
> > need for grouping in your situation.
> > Are you having a problem with you other rules and that's why are you
> trying
> > to separate them?
> > Greetings.
> >
> > On Fri, Mar 25, 2011 at 10:38 AM, Benson Fung <benson.redhat at gmail.com>
> > wrote:
> >>
> >> The other 997 rules are for another Fact.  Sorry for my misleading you.
> >>
> >>
> >> Benson
> >>
> >> On Fri, Mar 25, 2011 at 9:35 PM, Mauricio Salatino <salaboy at gmail.com>
> >> wrote:
> >> > but you have another 997 rules about the A() Fact? or the other rules
> >> > are
> >> > about another facts??
> >> > Greetings.
> >> >
> >> > On Fri, Mar 25, 2011 at 10:29 AM, Benson Fung <
> benson.redhat at gmail.com>
> >> > wrote:
> >> >>
> >> >> Thanks Mauricio,
> >> >>
> >> >> What I want is to only execute these 3 rules simultaneously out of
> >> >> 1000 rules in the rulebase.  Can you advise programmatically how to
> >> >> achieve?
> >> >>
> >> >> Thanks
> >> >>
> >> >>
> >> >> On Fri, Mar 25, 2011 at 9:19 PM, Mauricio Salatino <
> salaboy at gmail.com>
> >> >> wrote:
> >> >> > If you include all that rules inside a knowledge session and then
> if
> >> >> > you
> >> >> > insert A, all the rules will be evaluated.
> >> >> > There is no need to create an agenda group for that, unless I'm
> >> >> > missing
> >> >> > something else that you don't mention :)
> >> >> > Greetings.
> >> >> >
> >> >> > On Fri, Mar 25, 2011 at 10:10 AM, Benson Fung
> >> >> > <benson.redhat at gmail.com>
> >> >> > wrote:
> >> >> >>
> >> >> >> Hi Leonardo,
> >> >> >>
> >> >> >> Thanks for your patience.  Let me try to describe what I want in
> >> >> >> details.
> >> >> >>
> >> >> >> e.g.  There is a variable A with 3 rules in BRMS.
> >> >> >>
> >> >> >> The variable A is input by a user via an edit box at the frontend.
> >> >> >> Now there are 1000 rules in the BRMS rulebase.  However, 3 out of
> >> >> >> 1000
> >> >> >> rules are related to this variable A, like
> >> >> >>
> >> >> >> rule 'check_a_empty'
> >> >> >> when (( A == null) || (A == "") )
> >> >> >>
> >> >> >> then  return a message 'A cannot be empty'
> >> >> >>
> >> >> >> rule 'A_Range_0_100'
> >> >> >> when ((A < 0 ) || (A > 100) )
> >> >> >>
> >> >> >> then return a message 'A must be within the range between 0 and
> 100'
> >> >> >>
> >> >> >> rule 'check_A_Character'
> >> >> >> when ((A is not an integer))
> >> >> >>
> >> >> >> return a message 'A must be an integer'
> >> >> >>
> >> >> >>
> >> >> >> If I would like to execute the above 3 rules at the same time, how
> >> >> >> to
> >> >> >> write/develop the AgendaFilter class?
> >> >> >>
> >> >> >> Please advise
> >> >> >>
> >> >> >>
> >> >> >> Thank you very much
> >> >> >> Benson
> >> >> >>
> >> >> >> 2011/3/25 Leonardo Gomes <leonardo.f.gomes at gmail.com>:
> >> >> >> > Hi Benson,
> >> >> >> >
> >> >> >> > What exactly do you want to achieve? You want to execute rules
> in
> >> >> >> > parallel?
> >> >> >> >
> >> >> >> >
> >> >> >> >
> >> >> >> > On Fri, Mar 25, 2011 at 2:08 AM, Benson Fung
> >> >> >> > <benson.redhat at gmail.com>
> >> >> >> > wrote:
> >> >> >> >>
> >> >> >> >> Hi,
> >> >> >> >>
> >> >> >> >> I have setup about 10 rules in the rulebase.  Can you tell me
> how
> >> >> >> >> I
> >> >> >> >> can execute more than one specific rule at the same time?
>  Please
> >> >> >> >> help
> >> >> >> >>
> >> >> >> >>
> >> >> >> >> Thanks
> >> >> >> >> Benson
> >> >> >> >> _______________________________________________
> >> >> >> >> rules-users mailing list
> >> >> >> >> rules-users at lists.jboss.org
> >> >> >> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >> >> >> >
> >> >> >> >
> >> >> >> > _______________________________________________
> >> >> >> > rules-users mailing list
> >> >> >> > rules-users at lists.jboss.org
> >> >> >> > https://lists.jboss.org/mailman/listinfo/rules-users
> >> >> >> >
> >> >> >> >
> >> >> >>
> >> >> >> _______________________________________________
> >> >> >> rules-users mailing list
> >> >> >> rules-users at 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.jbug.com.ar
> >> >> >
> >> >> >  - Salatino "Salaboy" Mauricio -
> >> >> >
> >> >
> >> >
> >> >
> >> > --
> >> >  - CTO @ http://www.plugtree.com
> >> >  - MyJourney @ http://salaboy.wordpress.com
> >> >  - Co-Founder @ http://www.jbug.com.ar
> >> >
> >> >  - Salatino "Salaboy" Mauricio -
> >> >
> >
> >
> >
> > --
> >  - CTO @ http://www.plugtree.com
> >  - MyJourney @ http://salaboy.wordpress.com
> >  - Co-Founder @ http://www.jbug.com.ar
> >
> >  - Salatino "Salaboy" Mauricio -
> >
>
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