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<div class=Section1>
<p class=MsoNormal><span lang=EN-US>Hi folks!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>First time in this mailing-list, with very
little experience in Drools (Fusion, regarding CEP).<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I hope that someone could help me out </span><span
lang=EN-US style='font-family:Wingdings'>J</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I’ve being investigating about this
issue and I’m not getting any answer.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<div style='mso-element:para-border-div;border:none;border-bottom:solid windowtext 1.0pt;
padding:0cm 0cm 1.0pt 0cm'>
<p class=MsoNormal style='border:none;padding:0cm'><span lang=EN-US>Here’s
the problem:<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span lang=EN-US>I’ve got a DRL file with a simple
rule:<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:#960000'>rule</span></b><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:black'> “....”<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:black'> </span><b><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:#960000'>when</span></b><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:black'> $offline
: Event( code == </span><span lang=EN-US style='font-size:9.0pt;font-family:
"Lucida Console";color:green'>"101"</span><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:black'>, $offlineLane
: lane ) </span><b><span lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";
color:#960000'>from</span></b><span lang=EN-US style='font-size:9.0pt;
font-family:"Lucida Console";color:black'> entry-point </span><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:green'>"incoming"</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:black'> </span><b><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:#960000'>not</span></b><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:black'> (
$online : Event(code == </span><span lang=EN-US style='font-size:9.0pt;
font-family:"Lucida Console";color:green'>"102"</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:black'>,
lane == $offlineLane, </span><b><span lang=EN-US style='font-size:9.0pt;
font-family:"Lucida Console";color:#960000'>this</span></b><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:black'> after [0s,3m]
$offline ) </span><b><span lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";
color:#960000'>from</span></b><span lang=EN-US style='font-size:9.0pt;
font-family:"Lucida Console";color:black'> entry-point </span><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:green'>"incoming"</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:black'> )</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:black'> </span><b><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:#960000'>then</span></b><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:black'> //
some code here <o:p></o:p></span></p>
<p class=MsoNormal><b><span lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";
color:#960000'>end<o:p></o:p></span></b></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>What I want is: when there’s an
offline for more than 3 minutes *<b>without</b>* any online event (meanwhile),
that execute the rule.<o:p></o:p></span></p>
<div style='mso-element:para-border-div;border:none;border-bottom:solid windowtext 1.0pt;
padding:0cm 0cm 1.0pt 0cm'>
<p class=MsoNormal style='border:none;padding:0cm'><span lang=EN-US><o:p> </o:p></span></p>
</div>
<p class=MsoNormal><span lang=EN-US>I’ve got JUnits, with Drools
configured with STREAM mode and PSEUDO clock.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>All is good in JUnit world except in this
testcase:<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo2'><![if !supportLists]><span
lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>Insert an offline event (</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:#0000C0'>workingMemoryEntryPoint</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:black'>.insert(
offlineEvent );</span><span lang=EN-US>)<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo2'><![if !supportLists]><span
lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>Clock advances 2m50s (</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:#0000C0'>clock</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:black'>.advanceTime(2,TimeUnit.</span><i><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:#0000C0'>MINUTES</span></i><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:black'> );</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:#0000C0'>clock</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:black'>.advanceTime(50,
TimeUnit.</span><i><span lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";
color:#0000C0'>SECONDS</span></i><span lang=EN-US style='font-size:9.0pt;
font-family:"Lucida Console";color:black'> );</span><span lang=EN-US>)<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo2'><![if !supportLists]><span
lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>Insert an online event (</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:#0000C0'>workingMemoryEntryPoint</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:black'>.insert(
onlineEvent );</span><span lang=EN-US>)<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo2'><![if !supportLists]><span
lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>Clock advances 0m15s (</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:#0000C0'>clock</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:black'>.advanceTime(15,TimeUnit.</span><i><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:#0000C0'>SECONDS</span></i><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:black'> );</span><span
lang=EN-US>)<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo2'><![if !supportLists]><span
lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>Assertion error: the rule runs
when it shouldn’t (online event cancels offline event).<o:p></o:p></span></p>
<div style='mso-element:para-border-div;border:none;border-bottom:solid windowtext 1.0pt;
padding:0cm 0cm 1.0pt 0cm'>
<p class=MsoNormal style='border:none;padding:0cm'><span lang=EN-US><o:p> </o:p></span></p>
</div>
<p class=MsoNormal><span lang=EN-US>I’ve got no clue about this but I
have some more interesting info:<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l3 level1 lfo4;
text-autospace:none'><![if !supportLists]><span lang=EN-US style='font-size:
9.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>When clock advances 0m15s,
there’s an NPE on a LinkedList:<br>
</span><u><span lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";
color:navy'>java.lang.NullPointerException</span></u><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:red'> at
org.drools.util.LinkedList.remove(</span><u><span lang=EN-US style='font-size:
9.0pt;font-family:"Lucida Console";color:navy'>LinkedList.java:113</span></u><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:red'>)</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:red'> at
org.drools.common.Scheduler$DuractionJob.execute(</span><u><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:navy'>Scheduler.java:71</span></u><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:red'>)</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:red'> at
org.drools.time.impl.PseudoClockScheduler$ScheduledJob.call(</span><u><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:navy'>PseudoClockScheduler.java:219</span></u><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:red'>)</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:red'> at
org.drools.time.impl.PseudoClockScheduler.runCallBacks(</span><u><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:navy'>PseudoClockScheduler.java:168</span></u><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:red'>)</span><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console"'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:18.0pt'><span lang=EN-US
style='font-size:9.0pt;font-family:"Lucida Console";color:red'> at
org.drools.time.impl.PseudoClockScheduler.advanceTime(</span><u><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:navy'>PseudoClockScheduler.java:130</span></u><span
lang=EN-US style='font-size:9.0pt;font-family:"Lucida Console";color:red'>)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l2 level1 lfo3'><![if !supportLists]><span
lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>I haven’t any code/rule that
retracts events (I shouldn’t have it for this case, right?)<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l2 level1 lfo3'><![if !supportLists]><span
lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>I’ve tried Drools 5.0.1
and 5.1.0.M1, with the same results<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l2 level1 lfo3'><![if !supportLists]><span
lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>The issue causing NPE, I’ve
found an old issue regarding Drools 3.0.4 and the bug was corrected in 3.0.5 (https://jira.jboss.org/jira/browse/JBRULES-455)<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l2 level1 lfo3'><![if !supportLists]><span
lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span
style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-US>I think that someone wrote
about this error (in Drools 5) but I don’t have the link to it.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thanks In Advance!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Best regards,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width="100%"
style='width:100.0%'>
<tr>
<td colspan=2 style='background:#B4CB3D;padding:0cm 0cm 0cm 0cm'>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><img
width=389 height=6 id="Picture_x0020_1"
src="cid:image001.jpg@01CAC9E1.DBEC6E10"><o:p></o:p></span></p>
</td>
</tr>
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<td style='border:none;border-left:solid black 1.0pt;background:#EBF3CC;
padding:7.5pt 7.5pt 7.5pt 7.5pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Vítor
Mendonça Moreira<br>
<b><span style='color:#8A9A37'>Analista / Programador<br>
Direcção de Investigação e Desenvolvimento</span></b><br>
<br>
Rua Dr. Francisco Sá Carneiro, nº. 4 r/c esq.<br>
2500 - 206 - Caldas da Rainha<br>
Tel: (+351) 262 832 196<br>
Fax: (+351) 262 186 455<br>
Web: <a href="http://www.makewise.pt"><span style='color:blue'>www.makewise.pt</span></a><br>
Uma empresa: <a href="http://www.sousapedro.com"><span style='color:blue'>Grupo
Sousa Pedro</span></a> <o:p></o:p></span></p>
</td>
<td width="1%" style='width:1.0%;background:#EBF3CC;padding:7.5pt 7.5pt 7.5pt 7.5pt'>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><img
border=0 width=119 height=60 id="Picture_x0020_2"
src="cid:image002.jpg@01CAC9E1.DBEC6E10"><o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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