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 <itch...@gmail.com <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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