[rules-users] controling rule execution

[techy]

Thanks  Edson.
If Parent rule does not fire, I want all of child rules to get fired. As per
my understanding, If I use activation-group, Then It can only fire one child
at max(which is not what I want.)

Please clarify this.


Edson Tirelli-3 wrote:
> 
>    activation-group allows you to define mutually exclusive groups of
> rules
> where when one fire, it cancel the others.
> 
>    []s
>    Edson
> 
> 2008/10/31 Greg Barton <greg_barton at yahoo.com>
> 
>> Yep, it would affect all rules that could match on those facts.
>>
>> You could have a control fact per child rule that could potentially
>> match.
>>  The child rule would include an existence check for that fact in it's
>> conditions.  The parent rule would retract the fact to prevent the child
>> rule from firing.
>>
>> A bit more clunky than the custom agenda filter approach, but:
>>
>> 1) I haven't tested the custom agenda filter thing, so I'm just guessing
>> it'd work. (I'm pretty sure it would, though.)
>> 2) It would be more portable across other rule engines. (If that's
>> important to you.)
>>
>> --- On Fri, 10/31/08, techy <techluver007 at gmail.com> wrote:
>>
>> > From: techy <techluver007 at gmail.com>
>> > Subject: Re: [rules-users] controling rule execution
>> > To: rules-users at lists.jboss.org
>> > Date: Friday, October 31, 2008, 2:44 PM
>> > Thanks Greg and Joe.
>> > I think i should have mentioned this before.
>> > I can also have other parent rule node in the tree
>> > structure which tests
>> > against same fact.  Each parent rule node should only
>> > control its child rule
>> > nodes, but not other parent rule node and  child rule node.
>> >
>> > If I do retract, won't it affect other parent rule
>> > node?
>> >
>> >
>> > Greg Barton wrote:
>> > >
>> > > You may consider the other suggestion of retracting
>> > the fact(s) that would
>> > > trigger the child rule.  It's the more
>> > "natural" way of going about it.
>> > >
>> > > What's driving this design choice?
>> > >
>> > > --- On Fri, 10/31/08, techy
>> > <techluver007 at gmail.com> wrote:
>> > >
>> > >> From: techy <techluver007 at gmail.com>
>> > >> Subject: Re: [rules-users] controling rule
>> > execution
>> > >> To: rules-users at lists.jboss.org
>> > >> Date: Friday, October 31, 2008, 8:24 AM
>> > >> Thanks Greg.
>> > >> child rule should be reactivated if parent's
>> > conditions
>> > >> for some other fact
>> > >> are false.
>> > >> this should happen for  each fact.  Parent's
>> > condition
>> > >> should decide whether
>> > >> child rule should be executed or not for each
>> > fact. If
>> > >> parent's conditions
>> > >> are true, then don't execute child rule and
>> > vice versa.
>> > >>
>> > >>
>> > >> Greg Barton wrote:
>> > >> >
>> > >> > A combination of higher priority parent rules
>> > with a
>> > >> custom agenda filter,
>> > >> > activated when the parent rule fires, that
>> > prevents
>> > >> the child rule from
>> > >> > firing.
>> > >> >
>> > >> > Just a guess.
>> > >> >
>> > >> > So, after the child rule is initially
>> > prevented from
>> > >> firing, can it be
>> > >> > reactivated?  If so, when and under what
>> > conditions?
>> > >> >
>> > >> > --- On Thu, 10/30/08, techy
>> > >> <techluver007 at gmail.com> wrote:
>> > >> >
>> > >> >> From: techy
>> > <techluver007 at gmail.com>
>> > >> >> Subject: [rules-users] controling rule
>> > execution
>> > >> >> To: rules-users at lists.jboss.org
>> > >> >> Date: Thursday, October 30, 2008, 11:18
>> > PM
>> > >> >> Hello,
>> > >> >>
>> > >> >> I would like to have the rules
>> > parent/child
>> > >> structure. I
>> > >> >> don't want the
>> > >> >> child rules to be executed  when
>> > parent's
>> > >> conditions
>> > >> >> are true(i.e
>> > >> >> consequence is  executed) even if
>> > child's
>> > >> conditions
>> > >> >> are true. How Can I
>> > >> >> achieve that in drools?
>> > >> >> Please clarify.
>> > >> >> --
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>> > >> >> Nabble.com.
>> > >> >>
>> > >> >>
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>> > >> >>
>> > >>
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>> > >> >
>> > >> >
>> > >> >
>> > >> >
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>> > >> >
>> > >>
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> 
> 
> 
> -- 
>  Edson Tirelli
>  JBoss Drools Core Development
>  JBoss, a division of Red Hat @ www.jboss.com
> 
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