Re: [rules-users] ClassCastException and "from collect" keyword issue?

Hi Wolfgang, Thanks for your reply. Yes - this is the only place where both d2.rules.state.EvaluateRule and d2.autorating.data.model.Account are referenced. That's why we finally locate the classcastexception in this line: Account acct = (Account) obj; The weird thing is we are not able to replicate this error during the second time run in our program. We also searched and found some similar issues: http://drools.46999.n3.nabble.com/accumulate-vs-collect-td1884308.html http://lists.jboss.org/pipermail/rules-users/2009-June/009484.html http://drools.46999.n3.nabble.com/unexpected-ClassCastException-when-deal... Please advise. -Kevin -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Wolfgang Laun Sent: Thursday, January 31, 2013 10:29 AM To: Rules Users List Subject: Re: [rules-users] ClassCastException and "from collect" keyword issue? Is rule "EXC_COLLAT_HOLDING_ARRANGEMENT" *absolutely* the only one where both d2.rules.state.EvaluateRule and d2.autorating.data.model.Account are referenced? -W On 31/01/2013, Tan, Kevin <Kevin.Tan(a)morganstanley.com&gt; wrote: > Hi rules users, > > I am having a problem with Drools 5.1.1 recently. The exception we had > is: > > java.lang.ClassCastException: > d2.rules.state.EvaluateRule cannot be cast to > d2.autorating.data.model.Account > org.drools.runtime.rule.ConsequenceException: rule: > DERIVE_COLLAT_MECHANISM_PLEDGE > > Our rules are listed as below: > > ////////////////////////////////////////////////////////////////////// > ////////////////////////////////////////////////////////////////////// > ////////////////// > rule "DERIVE_COLLAT_MECHANISM_PLEDGE" > no-loop true > salience 19991 > when > $RatingData : RatingRuleFact() > $contract : Contract() > $csaDoc : Document(documentId == $contract.csaId && status == > "Final/Signed") > (EvaluateRule(ruleName == "INSCOPE)) > then > RuleProcessingOutput ruleOutput = $RatingData.getRuleOutput(); > RuleResult result = new RuleResult(drools.getRule().getName(), > $contract.getContractId(), $RatingData.getPrincipalPartyCountry()); > ruleOutput.addRuleResult(result); > $contract.setCollateralMechanism(result.getRuleOutputText()); > insertLogical(new EvaluateRule(drools.getRule().getName())); > end > > rule "EXC_COLLAT_HOLDING_ARRANGEMENT" > no-loop true > salience 19985 > when > $RatingData : RatingRuleFact() > $contract : Contract() > $noHoldingAgreementAccts : ArrayList() > from collect ( Account(collatNetId == $contract.contractId, > businessUnit not in ("COMM", "FID", "FX", "IED", > "SECLENDING", "SWAPS")) from $contract.collatAccounts > ) > EvaluateRule(ruleName == "INSCOPE") > then > RuleProcessingOutput ruleOutput = $RatingData.getRuleOutput(); > for (Object obj : $noHoldingAgreementAccts) { > Account acct = (Account) obj; > if (acct.getDp2Account() != null) { > RuleResult result = new > RuleResult(drools.getRule().getName(), $contract.getContractId(), > $RatingData.getPrincipalPartyCountry()); > result.setAccountId(acct.getDp2Account().getAccountId()); > result.setRuleOutputText("BU has no Data"); > ruleOutput.addRuleResult(result); > } > } > if ($noHoldingAgreementAccts.size() > 0) { > insertLogical(new EvaluateRule(drools.getRule().getName())); > } > end > ////////////////////////////////////////////////////////////////////// > ////////////////////////////////////////////////////////////////////// > ////////////////// > > > * In object Account(), we did not have any EvaluateRule() object > in > it. > > * We also noticed after the "from collect" key word there are > EvaluateRule() object defined after it(but the purpose is just to > determine if this object exist or not in the Working Memory), in the > LHS of each rule file. > > * In the variable $noHoldingAgreementAccts, we are not supposed > to > see the object - EvaluateRule (BUT the exception is showing it is > trying to cast EvaluateRule into Account) > > > My question is are there any known problems/issues with the following > > - Drools rule compilers > > - Key word from collect > > - Rules production memory > > - Version 5.1.1 > > that can make this happen? Any ideas will be appreciated. Thanks. > > > Kevin Tan > Morgan Stanley | Enterprise Data & Services > 700 Rue Wellington | Floor 04 > Montreal, QC H3C 3S4 > Phone: +1 514 876-5756 > Kevin.Tan@morganstanley.com<mailto:Thanh.Dang@morganstanley.com> > > > > ________________________________ > > NOTICE: Morgan Stanley is not acting as a municipal advisor and the > opinions or views contained herein are not intended to be, and do not > constitute, advice within the meaning of Section 975 of the Dodd-Frank > Wall Street Reform and Consumer Protection Act. If you have received > this communication in error, please destroy all electronic and paper > copies and notify the sender immediately. Mistransmission is not > intended to waive confidentiality or privilege. Morgan Stanley > reserves the right, to the extent permitted under applicable law, to > monitor electronic communications. 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Morgan Stanley reserves the right, to the extent permitted under applicable law, to monitor electronic communications. This message is subject to terms available at the following link: http://www.morganstanley.com/disclaimers. If you cannot access these links, please notify us by reply message and we will send the contents to you. By messaging with Morgan Stanley you consent to the foregoing. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users