This will not work.  Rules will not predictably react to changes in global 
variables.  Use an object in working memory.

GreG

On Jun 3, 2010, at 7:15, "PAYET, Manuel" <manuel.pa...@capgemini.com> wrote:

If I were you, I'd use something like 

Global java.lang.Integer cnt;

Rule "before everything"
Salience 10
When
Eval(true)
Then
Cnt=0
End


Rule "condition A"
When 
condition A
Then
 cnt=cnt+1;
End

Rule "condition B"
When 
condition B
Then
 cnt=cnt+1;
End

Rule "condition C"
When 
condition B
Then
 cnt=cnt+1;
End


Rule "action 1, after everything"
Salience -10
When 
   eval(cnt>=2)
Then
   execute action 1
End


Of course, if you change the fact, you'll probably have to think about things 
like lock-on-active to increment only one time the cnt variable


-----Message d'origine-----
De : rules-users-boun...@lists.jboss.org 
[mailto:rules-users-boun...@lists.jboss.org] De la part de skasab2s
Envoyé : jeudi 3 juin 2010 14:04
À : rules-users@lists.jboss.org
Objet : [rules-users] Firing a rule if at least its two conditions are satified


Hello,

we are using Drools in our company. We have a rule with three conditions in 
this format:

when
    Condition A
    Condition B
    Condition C
then 
    execute Action 1

Now we have a situation, in which the rule should fire if AT LEAST two of the 
three conditions are satisfied. Do you know how to implement this? Any ideas or 
hints?

Many thanks and regards!

skasab2s.




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