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IMO you can just use
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activation groups and not have to deal with incrementing, something
like:<br>
<br>
rule first<br>
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activation-group "myactgrp"<br>
when<br>
Condition A<br>
Condition B<br>
then<br>
...<br>
end<br>
<br>
<br>
rule second<br>
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activation-group "myactgrp"<br>
when<br>
Condition A<br>
Condition C<br>
then<br>
...<br>
end<br>
<br>
rule third<br>
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activation-group "myactgrp"<br>
when<br>
Condition B<br>
Condition C<br>
then<br>
...<br>
end<br>
<br>
When one of these rules fire it will cancel the activation of all other
rules in the same activation group. You can also then add salience to
control rule priority.<br>
<br>
<br>
On 6/3/10 8:15 AM, PAYET, Manuel wrote:
<blockquote
cite="mid:5104F06B63E3164FAEB2F42B920311654CB09B29@CORPMAIL05.corp.capgemini.com"
type="cite">
<pre wrap="">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 : <a class="moz-txt-link-abbreviated" href="mailto:rules-users-bounces@lists.jboss.org">rules-users-bounces@lists.jboss.org</a> [<a class="moz-txt-link-freetext" href="mailto:rules-users-bounces@lists.jboss.org">mailto:rules-users-bounces@lists.jboss.org</a>] De la part de skasab2s
Envoyé : jeudi 3 juin 2010 14:04
À : <a class="moz-txt-link-abbreviated" href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a>
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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</pre>
</blockquote>
<br>
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