Re: [rules-users] ClassCastException after migrating from Drools 4.x to v5.5

Mark, On 18/02/2013, Mark Proctor <mproctor(a)codehaus.org&gt; wrote: > stateless is just a wrapped stateful session - insert, update and delete > work as normal. So let's get this straight, this quote from the "Expert" manual which does NOT refer to sequential mode!!) is wrong and should be removed: <quote> Stateless sessions do not support iterative insertions and the method call fireAllRules() from Java code; </quote>

> > For "sequential" mode, inserts will reach the right input of a beta node and > then just do nothing - as all the beta network evaluation has been done. Which I take it to mean that you can do insert (and retract? and modify?) but it will not work as intended? Without error indication??

-W > > Mark > On 18 Feb 2013, at 07:17, Wolfgang Laun <wolfgang.laun(a)gmail.com&gt; wrote: > >> I may be mistaken, but the stack trace looks as if a stateless >> knowledge session is being run, wherein it executes a RHS >> ("employeePreloadSystemConstants") where some fact is being inserted. >> >> Not sure what *ought* to happen in this case, though: I've been trying >> to find this out ever since 5.1.x. A meagre "...do not support >> iterative insertions..." is all there is to be read, but what does >> this imply? Simply doesn't work in an unspecified way? May crash on >> workdays...?? A "tut, tut" from the Drools Team ??? ;-) >> >> -W >> >> >> On 18/02/2013, Mark Proctor <mproctor(a)codehaus.org&gt; wrote: >>> Looks like an 'or' bug. Which is surprising, as we had 'or' bugs in 4.x, >>> and >>> fixed a lot of them for 5.x. >>> >>> Could you build and try 5.5.x here now, this is the branch for the 5.6 >>> release: >>> https://github.com/droolsjbpm/drools/tree/5.5.x >>> >>> If it's still not fixed, could you write an isolated test? Seems like >>> you >>> only need one rule, and two or three facts to trigger it. Ideally please >>> re-use facts from the test classes already existing - details of how to >>> write tests, and submit as pull requests is here: >>> http://docs.jboss.org/drools/release/5.4.0.Final/droolsjbpm-introduction-... >>> >>> If you can get us this test pull request asap (next few days), we'll fix >>> and >>> get it into the 5.6 release. Otherwise you may have to wait some time for >>> a >>> fix. >>> >>> Mark >>> On 18 Feb 2013, at 01:10, ismaximum <mnrz57(a)gmail.com&gt; wrote: >>> >>>> Ah sorry.. It seems my first message hasn't been accepted by the >>>> user-list... >>>> I post it again here: >>>> >>>> After we upgrade to Drools v 5.5 there are hundreds of errors in test >>>> cases >>>> related to our rules. >>>> One of which is related to this ClassCastException which I noticed it >>>> occurs >>>> when we have nested OR statements >>>> >>>> Here is one example: >>>> >>>> rule "employeeContributionStartDateAfterAccountStartDate" >>>> ruleflow-group "EmployeeValidation" >>>> when >>>> // We only want this rule to fire when we are using the >>>> create:Employee node. NOTE that the startDate or contributionStartDate >>>> cannot be updated >>>> EmployeeDetailsRulesModel(create == true) >>>> // Get the date to validate >>>> Employee( $contributionStartDate : contributionStartDate != null >>>> ) >>>> (or >>>> (and >>>> // i.e. The contribution start date and the account start >>>> dates are both specified. >>>> Account( $accountStartDate : accountStartDate != null ) >>>> eval( $contributionStartDate.compare($accountStartDate) < >>>> 0 >>>> ) >>>> ) >>>> (and >>>> // The contribution start date is specified but the >>>> account >>>> start date is not, but should be defaulted to today. >>>> Account( accountId == null, accountStartDate == null ) >>>> SystemConstants($today : currentSystemDateWithoutTime) >>>> eval( >>>> $contributionStartDate.compare(jaxbUtils.toXMLGregorianCalendarDateOnly($today)) >>>> < 0 ) >>>> ) >>>> (and >>>> // for an existing account where the account start date >>>> is >>>> not specified. >>>> Account( $accountId : accountId != null, >>>> $accountStartDate >>>> : >>>> accountStartDate == null ) >>>> $composerMemberAccount : BaseMemberAccount() from >>>> memberAccountDAO.getMemberAccount($accountId) >>>> eval( >>>> $contributionStartDate.compare(jaxbUtils.toXMLGregorianCalendarDateOnly($composerMemberAccount.getFundStartDate())) >>>> < 0 ) >>>> ) >>>> ) >>>> then >>>> error(ApplicationArea.EMPLOYEE, kcontext); >>>> end >>>> >>>> >>>> >>>> Here is the error message: >>>> >>>> Exception executing consequence for rule >>>> "employeePreloadSystemConstants" >>>> in >>>> com.cname.rules.validation.business: org.drools.RuntimeDroolsException: >>>> com.cname.rules.validation.business.Rule_employeeContributionStartDateAfterAccountStartDate_357b04c70dac4f469ea9cedd93d15da7Eval1Invoker@d3924bbc >>>> : java.lang.ClassCastException: >>>> com.cname.rules.model.common.EmployeeDetailsRulesModel cannot be cast >>>> to >>>> com.cname.cbis.domain.update.Account >>>> at >>>> org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39) >>>> at >>>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1297) >>>> at >>>> org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1221) >>>> at >>>> org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1456) >>>> at >>>> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710) >>>> at >>>> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674) >>>> at >>>> org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230) >>>> at >>>> org.drools.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:106) >>>> at >>>> org.drools.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:32) >>>> at >>>> org.drools.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:155) >>>> at >>>> org.drools.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:76) >>>> at >>>> org.drools.impl.StatelessKnowledgeSessionImpl.execute(StatelessKnowledgeSessionImpl.java:264) >>>> at >>>> com.cname.rules.CBISAbstractRuleCoverageTest.runValidation(CBISAbstractRuleCoverageTest.java:441) >>>> at >>>> com.cname.rules.business.EmployeeBusinessRulesTest.testEmployeeContributionStartDateAfterAccountStartDate(EmployeeBusinessRulesTest.java:348) >>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >>>> at >>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) >>>> at >>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) >>>> at java.lang.reflect.Method.invoke(Method.java:597) >>>> at junit.framework.TestCase.runTest(TestCase.java:168) >>>> at junit.framework.TestCase.runBare(TestCase.java:134) >>>> at junit.framework.TestResult$1.protect(TestResult.java:110) >>>> at junit.framework.TestResult.runProtected(TestResult.java:128) >>>> at junit.framework.TestResult.run(TestResult.java:113) >>>> at junit.framework.TestCase.run(TestCase.java:124) >>>> at junit.framework.TestSuite.runTest(TestSuite.java:243) >>>> at junit.framework.TestSuite.run(TestSuite.java:238) >>>> at >>>> org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83) >>>> at >>>> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) >>>> at >>>> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) >>>> at >>>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) >>>> at >>>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) >>>> at >>>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) >>>> at >>>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) >>>> Caused by: org.drools.RuntimeDroolsException: >>>> com.cname.rules.validation.business.Rule_employeeContributionStartDateAfterAccountStartDate_357b04c70dac4f469ea9cedd93d15da7Eval1Invoker@d3924bbc >>>> : java.lang.ClassCastException: >>>> com.cname.rules.model.common.EmployeeDetailsRulesModel cannot be cast >>>> to >>>> com.cname.cbis.domain.update.Account >>>> at >>>> org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:119) >>>> at >>>> org.drools.reteoo.EvalConditionNode.assertLeftTuple(EvalConditionNode.java:176) >>>> at >>>> org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196) >>>> at >>>> org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:71) >>>> at >>>> org.drools.reteoo.JoinNode.propagateFromRight(JoinNode.java:159) >>>> at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:148) >>>> at >>>> org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:497) >>>> at >>>> org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:382) >>>> at >>>> org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:235) >>>> at >>>> org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:240) >>>> at >>>> org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:350) >>>> at >>>> org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:311) >>>> at >>>> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:903) >>>> at >>>> org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:192) >>>> at >>>> org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:186) >>>> at >>>> com.cname.rules.validation.business.Rule_employeePreloadSystemConstants_dcf7facf199041d3aa8f3b85387b4318.defaultConsequence(Rule_employeePreloadSystemConstants_dcf7facf199041d3aa8f3b85387b4318.java:7) >>>> at >>>> com.cname.rules.validation.business.Rule_employeePreloadSystemConstants_dcf7facf199041d3aa8f3b85387b4318DefaultConsequenceInvokerGenerated.evaluate(Unknown >>>> Source) >>>> at >>>> com.cname.rules.validation.business.Rule_employeePreloadSystemConstants_dcf7facf199041d3aa8f3b85387b4318DefaultConsequenceInvoker.evaluate(Unknown >>>> Source) >>>> at >>>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1287) >>>> ... 31 more >>>> Caused by: java.lang.ClassCastException: >>>> com.cname.rules.model.common.EmployeeDetailsRulesModel cannot be cast >>>> to >>>> com.cname.cbis.domain.update.Account >>>> at >>>> org.drools.base.com.cname.cbis.domain.update.Account1384796854$getAccountStartDate.getValue(Unknown >>>> Source) >>>> at >>>> org.drools.base.ClassFieldReader.getValue(ClassFieldReader.java:87) >>>> at org.drools.rule.Declaration.getValue(Declaration.java:233) >>>> at >>>> com.cname.rules.validation.business.Rule_employeeContributionStartDateAfterAccountStartDate_357b04c70dac4f469ea9cedd93d15da7Eval1InvokerGenerated.evaluate(Unknown >>>> Source) >>>> at >>>> com.cname.rules.validation.business.Rule_employeeContributionStartDateAfterAccountStartDate_357b04c70dac4f469ea9cedd93d15da7Eval1Invoker.evaluate(Unknown >>>> Source) >>>> at >>>> org.drools.rule.EvalCondition.isAllowed(EvalCondition.java:114) >>>> ... 49 more >>>> >>>> >>>> >>>> -- >>>> View this message in context: >>>> http://drools.46999.n3.nabble.com/ClassCastException-after-migrating-from... >>>> Sent from the Drools: User forum mailing list archive at Nabble.com. >>>> _______________________________________________ >>>> rules-users mailing list >>>> rules-users(a)lists.jboss.org >>>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >>> >>> _______________________________________________ >>> rules-users mailing list >>> rules-users(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users