I wonder if you can use a Global (or a static variable) to do the same without
really changing your rule.
Something like this.
Global Integer ruleFired;
rule "try not to loop"
when
$a : A($code : code)
$b : B(parentCode == $code)
then
if(ruleFired != 1)
{
addResult($a, $b);
Drools.getWorkingMemory().setGlobal(“ruleFired”,1);
}
end
From: [email protected]
[mailto:[email protected]] On Behalf Of Maxim Veksler
Sent: Monday, January 26, 2009 5:52 PM
To: Rules Users List
Subject: [rules-users] Not looping the rule when more then 1 valid match is
found
Hello group,
Assuming I have the rule:
rule "try not to loop"
when
$a : A($code : code)
$b : B(parentCode == $code)
then
addResult($a, $b);
end
and the classes:
public class A {
int code;
}
public class B {
int parentCode;
}
I insert into the WM 4 objects :
A(code = 1), A(code = 2);
B(parentCode=1), B(parentCode = 2);
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.
Anyone could suggest a method to enforce this ?
Thank you,
Maxim.
MASTEK LTD.
Mastek is in NASSCOM's 'India Top 20' Software Service Exporters List.
In the US, we're called MAJESCOMASTEK
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