[rules-users] rule fires several times

[elsdestickere]

Hi,

The Expert documentation says " a rule may fire once or several times", but
I don't understand why a rule sould fire several times if the objects state
does not change?

I have an example of a Customer object inserted in the Working Memory, with
2 rules that should fire, but the last rule fires twice.
Can someone explain?

rule "isAdult"
    when
        k : Customer( age(date)>=18, adult==false );
    then
        modify( k ) { setAdult(true)  };
        System.out.println( "Drools "+drools.getRule().getName()+": "+
k.getAdult() );
end
rule "WM" 
    when
       k : Customer(  ) ;
    then
        System.out.println( "Drools "+drools.getRule().getName()+": "
+k.getName());
end

...
Customer bert = new Customer ();
bert.setName("Bert");
bert.setDate(30);
ksession.insert(bert);
ksession.fireAllRules();
...
Output:
Drools WM: Bert 
Drools isAdult: true
Drools WM: Bert 

Br,
Els Destickere

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