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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Edson,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Many thanks for this: yes, we do use serialization so I will try
and identify the exact case where this error happens.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas;
color:#1F497D'>Cheerio,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas;
color:#1F497D'>Nic<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas;
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Nicholas Hemley<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Senior Developer<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Sidonis | Powering a New Generation of Service Assurance</span></b><span
style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>e: </span></b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><a href="mailto:carol.hopperton@sidonis.com">nic.hemley@sidonis.com</a><b><o:p></o:p></b></span></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>m: </span></b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>+44 (0)7956 695 037<o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>t: </span></b><span style='font-size:8.0pt;
font-family:"Arial","sans-serif";color:#1F497D'>+44 (0)1225 446060<o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>skype: nicholas.hemley</span></b><span
style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>w: <a href="http://www.sidonis.com/">www.sidonis.com</a><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></b></p>
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color:#1F497D'><img border=0 width=120 height=63 id="Picture_x0020_1"
src="cid:image001.jpg@01CA519B.C3CBBB10" alt="sidlogol esig"></span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#0F243E'>Sidonis Limited. Registered No: 5718402. Registered
Office: 2-4 Henry Street, Bath, Somerset. BA1 1JT. VAT Registration
No: 879658932. <o:p></o:p></span></p>
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color:#0F243E'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#0F243E'>This e-mail and the information it contains may be confidential,
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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 lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> rules-users-bounces@lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] <b>On Behalf Of </b>Edson Tirelli<br>
<b>Sent:</b> 20 October 2009 15:18<br>
<b>To:</b> Rules Users List<br>
<b>Subject:</b> Re: [rules-users] ClassCastException -
org.drools.reteoo.BetaMemory<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
This is a bug. Would you please open a JIRA and attach as
much information about the scenario as you can? A test case would be ideal,
even if the problem does not happen every single run. Also, are you using
serialization in your application? <br>
<br>
Edson<o:p></o:p></p>
<div>
<p class=MsoNormal>2009/10/20 Nicholas Hemley <<a
href="mailto:nic.hemley@sidonis.com">nic.hemley@sidonis.com</a>><o:p></o:p></p>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hello,<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I
am getting the following intermittent error from drools 5.0.1 when removing a
knowledge package from a knowledge base:<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>org.drools.reteoo.BetaMemory
cannot be cast to org.drools.reteoo.RuleTerminalNode$TerminalNodeMemory<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I
iterate over knowledgeBase.getKnowledgePackages() and the error occurs, but
only occasionally.<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The
full trace is as follows:<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>java.lang.ClassCastException:
org.drools.reteoo.BetaMemory cannot be cast to
org.drools.reteoo.RuleTerminalNode$TerminalNodeMemory</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>at
org.drools.reteoo.RuleTerminalNode.doRemove(RuleTerminalNode.java:357)</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>at
org.drools.common.BaseNode.remove(BaseNode.java:95)</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>at
org.drools.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java:237)</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>at
org.drools.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java:366)</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>at
org.drools.common.AbstractRuleBase.removeRule(AbstractRuleBase.java:712)</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>at
org.drools.common.AbstractRuleBase.removePackage(AbstractRuleBase.java:640)</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>at
org.drools.impl.KnowledgeBaseImpl.removeKnowledgePackage(KnowledgeBaseImpl.java:166)</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Any
ideas why this would potentially happen?<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.5pt;font-family:Consolas'>Cheerio,</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.5pt;font-family:Consolas'>Nic</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.5pt;font-family:Consolas'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:8.0pt;color:#1F497D'>Nicholas Hemley</span></b><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:8.0pt;color:#1F497D'>Senior Developer</span></b><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:8.0pt;color:#1F497D'>Sidonis | Powering a New Generation of
Service Assurance</span></b><o:p></o:p></p>
</div>
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<p class=MsoNormal style='margin-bottom:12.0pt'><br>
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<p class=MsoNormal><br>
<br clear=all>
<br>
-- <br>
Edson Tirelli<br>
JBoss Drools Core Development<br>
JBoss by Red Hat @ <a href="http://www.jboss.com">www.jboss.com</a><o:p></o:p></p>
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