Here is another quote from "Expert" (4.8.3.3.2., Property access on Java Beans), which raises some doubt.
<quote> In a stateful session, care should be taken when using nested accessors as the Working Memory is not aware of any of the nested values, and does not know when they change. </quote> So, I don't have to take care in a stateless session? But if this is merely a wrapper for a stateful session, one should think that there's no difference? -W On 18/02/2013, Wolfgang Laun <[email protected]> wrote: > I'll insert a sentence stating that all the RHS operations > insert/modify/delete are still possible. The strong negative in the > quoted sentence needs to be balanced. > -W > > On 18/02/2013, Wolfgang Laun <[email protected]> wrote: >> Mark, >> >> On 18/02/2013, Mark Proctor <[email protected]> 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 <[email protected]> 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 <[email protected]> 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-docs/html/gettingstarted.html >>>>> >>>>> 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 <[email protected]> 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-Drools-4-x-to-v5-5-tp4022292p4022382.html >>>>>> Sent from the Drools: User forum mailing list archive at Nabble.com. >>>>>> _______________________________________________ >>>>>> rules-users mailing list >>>>>> [email protected] >>>>>> https://lists.jboss.org/mailman/listinfo/rules-users >>>>> >>>>> >>>>> _______________________________________________ >>>>> rules-users mailing list >>>>> [email protected] >>>>> https://lists.jboss.org/mailman/listinfo/rules-users >>>>> >>>> _______________________________________________ >>>> rules-users mailing list >>>> [email protected] >>>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >>> >>> _______________________________________________ >>> rules-users mailing list >>> [email protected] >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >> > _______________________________________________ rules-users mailing list [email protected] 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