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</o:shapelayout></xml><![endif]--></head><body lang=DE-AT link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-GB>Hi all!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>We have the problem that the following rule never fires:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>rule</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:green'>"test-rule"</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>agenda-group</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:green'>"evaluation"</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>salience</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> 100</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>when</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> $cue : AnalysisCue() </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>from</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> entry-point </span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:green'>"LowLevelCueStream"</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>not</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'>(AnalysisCue(</span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>this</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> after[0ms,2500ms] $cue) </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>from</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> entry-point </span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:green'>"LowLevelCueStream"</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'>)</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>then</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> logger.debug(</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:green'>"... some message .."</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'>);</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>end</span></b><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>We found out that the problem is the combination of the negation with the conditional element “not” and the temporal constraint “[0ms,2500ms]”. Using the temporal operator “this after $cue” without a temporal constraint works correct in its semantics.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>Interestingly, when adding a constraint (cueType == 1) to the type in the negative pattern the rule begins to work. The rule would look like as follows:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>rule</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:green'>"test-rule"</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>agenda-group</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:green'>"evaluation"</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>salience</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> 100</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>when</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> $cue : AnalysisCue() </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>from</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> entry-point </span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:green'>"LowLevelCueStream"</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>not</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'>(AnalysisCue(cueType == 1, </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>this</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> after[0ms,2500ms] $cue) </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>from</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> entry-point </span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:green'>"LowLevelCueStream"</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'>)</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> </span><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>then</span></b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'> logger.debug(</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:green'>"... some message .."</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:black'>);</span><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata'><o:p></o:p></span></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:10.0pt;font-family:Inconsolata;color:#960000'>end</span></b><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>unfortunately the rule then fires with a delay of 4 to 5 seconds. The second parameter of the temporal constraint influences the delay.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>When changing the first parameter of the temporal constraint to a value greater than 0 the rule works as expected! The constraint would then look like as follows: “[1ms, 2500ms]”. Whereas in our case, we want to evaluate the time window from 0 – 2500ms.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>Our system works in the stream mode and we could reproduce this behaviour with the versions 5.3.1 and 5.4.0 Beta 1. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>Can anybody confirm if this is a bug in Drools, or did I overlook here something?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>Best regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>Wolfgang Weiss<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p></div></body></html>