Re: [rules-users] MUTEX, mutual exclusion in Drools?

[itchupe]

okay. I am not a big fan of mutex, so best is I redesign it as described.

Thanks very much for your answers!
itchupe

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Re: [rules-users] MUTEX, mutual exclusion in Drools?

[Chris Selwyn]

Of course, in the "then" part of rule1 you will have to set a fact that 
is checked in the "when" condition in rule2 to ensure that rule2 is not 
executed if rule1 has executed.


Chris

On 28/06/2011 12:30, Manuel Ortiz wrote:

Hello itchupe:

I think you mean what in Drools is called SALIENCE.

Look for that rule attribute in..

http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-expert/html/ch04.html#d0e3573

Best regards,

Manuel Ortiz.


2011/6/28 itchupe mailto:itch...@gmail.com>>

Hello there

I am new to all drools...
How can I 'mutex' in drools? Or could you suggest a better concept
for that?
(i mean, when two rules would fire : rule1 and rule2 in agenda
the mutex is checked and : mutex for this case is
defined, rule1
= higher, rule2 = lower prio
only the one rule with higher priority will be executed)


Cheers. Please let me know if my question is understandable...

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Re: [rules-users] MUTEX, mutual exclusion in Drools?

[Wolfgang Laun]

The hairy catchword in the post is "only".

Most of the time, it's best to design the conditions so that only one rule
will reach the agenda.

If this is too circumstantial, salience might be used to let the "special"
case fire before the "general" case; but then something must be done to
remove the activation of the latter. You can, for instance, retract the (a)
contributing fact. Or mark it and include "not marked" in all conditions.
Or...

-W


2011/6/28 Manuel Ortiz 

> Hello itchupe:
>
> I think you mean what in Drools is called SALIENCE.
>
> Look for that rule attribute in..
>
>
> http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-expert/html/ch04.html#d0e3573
>
> Best regards,
>
> Manuel Ortiz.
>
>
> 2011/6/28 itchupe 
>
>> Hello there
>>
>> I am new to all drools...
>> How can I 'mutex' in drools? Or could you suggest a better concept for
>> that?
>> (i mean, when two rules would fire : rule1 and rule2 in agenda
>> the mutex is checked and : mutex for this case is defined,
>> rule1
>> = higher, rule2 = lower prio
>> only the one rule with higher priority will be executed)
>>
>>
>> Cheers. Please let me know if my question is understandable...
>>
>> --
>> View this message in context:
>> http://drools.46999.n3.nabble.com/MUTEX-mutual-exclusion-in-Drools-tp3117430p3117430.html
>> Sent from the Drools: User forum mailing list archive at Nabble.com.
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>> rules-users mailing list
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>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>
>
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Re: [rules-users] MUTEX, mutual exclusion in Drools?

[Manuel Ortiz]

Hello itchupe:

I think you mean what in Drools is called SALIENCE.

Look for that rule attribute in..

http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-expert/html/ch04.html#d0e3573

Best regards,

Manuel Ortiz.


2011/6/28 itchupe 

> Hello there
>
> I am new to all drools...
> How can I 'mutex' in drools? Or could you suggest a better concept for
> that?
> (i mean, when two rules would fire : rule1 and rule2 in agenda
> the mutex is checked and : mutex for this case is defined,
> rule1
> = higher, rule2 = lower prio
> only the one rule with higher priority will be executed)
>
>
> Cheers. Please let me know if my question is understandable...
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/MUTEX-mutual-exclusion-in-Drools-tp3117430p3117430.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
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