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<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Yep, Wolfgang,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'>It’s a code issue – I just identified it… thanks. I have another
thread talking about NoClassDefFound exception. Would appreciate if you can
share your wisdom there.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Best<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Abe<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:SimSun'>发件人<span
lang=EN-US>:</span></span></b><span lang=EN-US style='font-size:10.0pt;
font-family:SimSun'> rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] </span><b><span style='font-size:
10.0pt;font-family:SimSun'>代表 </span></b><span lang=EN-US
style='font-size:10.0pt;font-family:SimSun'>Wolfgang Laun<br>
</span><b><span style='font-size:10.0pt;font-family:SimSun'>发送时间<span
lang=EN-US>:</span></span></b><span lang=EN-US style='font-size:10.0pt;
font-family:SimSun'> 2012</span><span style='font-size:10.0pt;font-family:SimSun'>年<span
lang=EN-US>3</span>月<span lang=EN-US>11</span>日<span lang=EN-US>
1:06<br>
</span><b>收件人<span lang=EN-US>:</span></b><span
lang=EN-US> Rules Users List<br>
</span><b>主题<span lang=EN-US>:</span></b><span lang=EN-US> Re:
[rules-users] Adhoc NullPointer exception in rule execution<o:p></o:p></span></span></p>
</div>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The location of the NPE is <o:p></o:p></span></p>
<div>
<p class=MsoNormal><span lang=EN-US> at
com.xxx.xxx.xxx.xxx.xxx.xxx.xxx(xxx.java:634)<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span lang=EN-US>and that's your code, invoked from the
right hand side of rule Match.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
</div>
<div>
<p class=MsoNormal><span lang=EN-US>-W<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span lang=EN-US>2012/3/10 Zhuo Li <<a
href="mailto:milanello1998@gmail.com">milanello1998@gmail.com</a>><o:p></o:p></span></p>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>Hi, folks,<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US> <o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>I’m using Drools 5.1, MVEL dialect, JDK 1.6 to build a OLTP system
running on tomcat 6.0.28. the runtime environment is on a cloud virtual and
node profile is relatively small. We’ve noticed below run time exceptions from
prod since it’s online from day one which is impacting transaction processing.
However it is happening adhoc-ly. Here I have 1 question:<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US> <o:p></o:p></span></p>
<p style='margin-left:18.0pt'><span lang=EN-US>1.</span><span lang=EN-US
style='font-size:7.0pt'> </span><span
lang=EN-US>The yellow marked lines are actually java file compiled from DRL
file. Why there is null pointer exception thrown from </span><span lang=EN-US
style='font-size:11.0pt'>org.drools.common.DefaultAgenda.fireActivation?</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US> <o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>ERROR>2012-02-25 11:42:25,071
com.xxx.xxx.xxx.xxx[DefaultQuartzScheduler_Worker-3]: Rules run time error:</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>org.drools.runtime.rule.ConsequenceException:
rule: Match</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'> </span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:916)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'> at
org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:845)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1056)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:733)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:699)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:218)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at com. xxx.xxx.xxx.xxx.xxx.xxx.xxx (SessionManager.java:94)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at com. xxx.xxx.xxx.xxx.xxx.xxx.yyy(SessionManagerJob.java:17)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>Caused by: java.lang.NullPointerException</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at com.xxx.xxx.xxx.xxx.xxx.xxx.xxx(xxx.java:634)</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at com.xxx.xxx.xxx.xxx.xxx.yyy.yyy(yyy.java:227)</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at com.xxx.xxx.xxx.xxx.xxx.yyy.zzz(zzz.java:115)</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at com.xxx.xxx.xxx.xxx.xxx.yyy.ttt(ttt.java:83)</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'> at
com.xxx.xxx.xxx.xxx.xxx.yyy.uuu(uuu.java:75)</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'> <span
style='background:yellow'>at com. com.xxx.xxx.xxx.xxx.xxx.yyy.vvv(vvv.java:9)</span></span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt;background:yellow'>
at com. com.xxx.xxx.xxx.xxx.xxx.yyy.www(www.java:28)</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:906)</span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:11.0pt'>
... 9 more</span><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>Best regards<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US>Abe<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US><br>
_______________________________________________<br>
rules-users mailing list<br>
<a href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br>
<a href="https://lists.jboss.org/mailman/listinfo/rules-users" target="_blank">https://lists.jboss.org/mailman/listinfo/rules-users</a><o:p></o:p></span></p>
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<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
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