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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I wonder if you can use a Global (or a static variable) to do
the same without really changing your rule.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Something like this. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Global Integer ruleFired; <o:p></o:p></p>
<p class=MsoNormal><br>
rule "try not to loop"<br>
when<br>
$a : A($code : code)<br>
$b : B(parentCode == $code)<br>
then<o:p></o:p></p>
<p class=MsoNormal> if(ruleFired != 1) <o:p></o:p></p>
<p class=MsoNormal>{<br>
addResult($a, $b);<o:p></o:p></p>
<p class=MsoNormal> Drools.getWorkingMemory().setGlobal(“ruleFired”,1);<o:p></o:p></p>
<p class=MsoNormal>}<br>
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<span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <b>On Behalf Of </b>Maxim Veksler<br>
<b>Sent:</b> Monday, January 26, 2009 5:52 PM<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> [rules-users] Not looping the rule when more then 1 valid match
is found<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Hello group,<br>
<br>
Assuming I have the rule: <br>
<br>
rule "try not to loop"<br>
when<br>
$a : A($code : code)<br>
$b : B(parentCode == $code)<br>
then<br>
addResult($a, $b);<br>
end<br>
<br>
<br>
and the classes:<br>
<br>
public class A {<br>
int code;<br>
}<br>
<br>
public class B {<br>
int parentCode;<br>
}<br>
<br>
<br>
<br>
I insert into the WM 4 objects :<br>
A(code = 1), A(code = 2);<br>
B(parentCode=1), B(parentCode = 2);<br>
<br>
I would like that after calling fireAllRules() only 1 match will be returned. I
have no preference regarding which one, in the current situation 2 matches are
returned. <br>
<br>
Anyone could suggest a method to enforce this ?<br>
<br>
<br>
Thank you,<br>
Maxim.<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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