[rules-dev] Evil bug in 5.4.0: wrong fact selected by simple constraint due to window:length()

[Edson Tirelli]

   Thanks Wolfgang, I will fix it asap. Traveling during the next week, but
should not take long.

   Edson

On Sat, Jun 23, 2012 at 6:23 AM, Wolfgang Laun <wolfgang.laun at gmail.com>wrote:

> It should be pretty obvious that the rule should not fire after the
> insertion of a single fact.
>
> declare MyEvent
> @role(event)
> end
>
> rule FaultsCoincide
> when
>    f1 : MyEvent( key == "type1" ) over window:length( 1 )
>    f2 : MyEvent( key == "type2" ) over window:length( 1 )
> then
>    System.out.println( ">>> f1=" + f1 + " f2=" + f2 );
>    if( f2.getKey().equals( "type1" ) ) System.out.println( "*** BUG ***" );
> end
>
> insert MyEvent<type1,ALARM>
> >>> f1=MyEvent<type1,ALARM> f2=MyEvent<type1,ALARM>
> *** BUG ***
> insert MyEvent<type2,ALARM>
> >>> f1=MyEvent<type2,ALARM> f2=MyEvent<type2,ALARM>
> >>> f1=MyEvent<type2,ALARM> f2=MyEvent<type1,ALARM>
> *** BUG ***
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>



-- 
  Edson Tirelli
  JBoss Drools Core Development
  JBoss by Red Hat @ www.jboss.com
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