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  1. Red Hat Decision Manager
  2. RHDM-1993

Behavior of multiple updates in executable model is different from non-executable model.

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      $ unzip reproducer_update_1a.zip
$ cd reproducer_update_1a
$ ./run_mvn
=== generateModel=NO ===
    :
    :
***** start
***** Rule 1: $account=com.example.reproducer.Account{id=1, currentCard=null, newCard=null}, $card1=com.example.reproducer.Card{id=10}, $card2=com.example.reproducer.Card{id=11}
***** Rule 2a: $account=com.example.reproducer.Account{id=1, currentCard=com.example.reproducer.Card{id=10}, newCard=com.example.reproducer.Card{id=11}} --> OK
***** end
    :
    :

=== generateModel=YES ===
    :
    :
***** start
***** Rule 1: $account=com.example.reproducer.Account{id=1, currentCard=null, newCard=null}, $card1=com.example.reproducer.Card{id=10}, $card2=com.example.reproducer.Card{id=11}
***** Rule 2b: $account=com.example.reproducer.Account{id=1, currentCard=com.example.reproducer.Card{id=10}, newCard=com.example.reproducer.Card{id=11}} --> NG    <---------- (*)
***** end
    :
    :

      Expected behavior: rule "Rule 2a" is fired in executable model (generateModel=YES).
      Actual behavior: rule "Rule 2b" is fired in executable model (generateModel=YES).

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      $ unzip reproducer_update_1a.zip $ cd reproducer_update_1a $ ./run_mvn === generateModel=NO === : : ***** start ***** Rule 1: $account=com.example.reproducer.Account{id=1, currentCard=null, newCard=null}, $card1=com.example.reproducer.Card{id=10}, $card2=com.example.reproducer.Card{id=11} ***** Rule 2a: $account=com.example.reproducer.Account{id=1, currentCard=com.example.reproducer.Card{id=10}, newCard=com.example.reproducer.Card{id=11}} --> OK ***** end : : === generateModel=YES === : : ***** start ***** Rule 1: $account=com.example.reproducer.Account{id=1, currentCard=null, newCard=null}, $card1=com.example.reproducer.Card{id=10}, $card2=com.example.reproducer.Card{id=11} ***** Rule 2b: $account=com.example.reproducer.Account{id=1, currentCard=com.example.reproducer.Card{id=10}, newCard=com.example.reproducer.Card{id=11}} --> NG <---------- (*) ***** end : : Expected behavior: rule "Rule 2a" is fired in executable model (generateModel=YES). Actual behavior: rule "Rule 2b" is fired in executable model (generateModel=YES).
    • 2024 Week 07-09 (from Feb 12), 2024 Week 10-12 (from Mar 4)

      When we run the rules (one of those has multiple update(s) for the same fact object) like (*1) and (*2) below, rule "Rule 2a" is fired in non-executable model but rule "Rule 2b" is actually fired in executable model. In both non-executable model and executable model, rule "Rule 2a" should be fired.

      (*1) Problematic rules

      dialect "mvel"

rule "Rule 1"
when
    $account : Account( id == "1" )
    $card1 : Card( id == "10" )
    $card2 : Card( id == "11" )
then
    System.out.println("***** " + drools.getRule().getName() + ": $account=" + $account + ", $card1=" + $card1 + ", $card2=" + $card2);

    $account.currentCard = $card1;
    update($account);   // ..... (*1-1)
    $account.newCard = $card2;
    update($account);   // ..... (*1-2)
end

rule "Rule 2a"
when
    $account : Account( newCard != null )
then
    System.out.println("***** " + drools.getRule().getName() + ": $account=" + $account + " --> OK");
end

rule "Rule 2b"
when
    $account : Account( newCard == null )
then
    System.out.println("***** " + drools.getRule().getName() + ": $account=" + $account + " --> NG");
end

      (*2) Java code inserting fact objects and calling KieSession#fireAllRules()

      Account account = new Account();
account.setId(new String("1"));
kSession.insert(account);

Card card1 = new Card();
card1.setId(new String("10"));
kSession.insert(card1);

Card card2 = new Card();
card2.setId(new String("11"));
kSession.insert(card2);

System.out.println("***** start");
kSession.fireAllRules();
System.out.println("***** end");

        1. reproducer_update_1a.zip
          8 kB

              rhn-support-tkobayas Toshiya Kobayashi
              rhn-support-myoshida Masato Yoshida
              Paolo Bizzarri Paolo Bizzarri
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                Created:
                Updated:
                Resolved: