A cannot be a fact and a variable at the same time. If you have, say,
   class Box { String input;... }
as a Java class, you'll have to check that input != null and != "" before
you check that it contains characters according to a number. (This
could be done in a single rule.)

But you can't simply the string against numeric limits; you'll have to
do a conversion into another field or, preferably, into the application
object.

rule checkInput
when
    Box( $inp: input == null || == "" || not matches "\\d+" )
then
    ...error...
end

rule convert
when
    Box( $inp: input != null && != "" && matches "\\d+" )
then
    insert( new Data( Integer.valueOf( $inp ) ) );
end

rule checkRange
when
    Data( value < 0 || value > 100 )
then
    ... error ...
end

And, most certainly, you don't want to have this executed at the same time.

-W




On 25 March 2011 15:35, Benson Fung <benson.redhat@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@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@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@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@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@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@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@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@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@lists.jboss.org
>> >> >> >> https://lists.jboss.org/mailman/listinfo/rules-users
>> >> >> >
>> >> >> >
>> >> >> > _______________________________________________
>> >> >> > rules-users mailing list
>> >> >> > rules-users@lists.jboss.org
>> >> >> > https://lists.jboss.org/mailman/listinfo/rules-users
>> >> >> >
>> >> >> >
>> >> >>
>> >> >> _______________________________________________
>> >> >> rules-users mailing list
>> >> >> rules-users@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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