[rules-users] Hibernate

Mark Proctor mproctor at codehaus.org
Thu Sep 27 10:11:55 EDT 2007 

Drools doesn't handle Hibernate in anyway, we have no awareness of it. 
The exceptions indicates that you have lazy loading enabled for 
hibernate, but your session is disconnected when it tries to lazy load 
the object.

Mark
Heyns, Juan wrote:
>
> Hi,
>
>  
>
> I am getting the following error with 4.0.1, I didn't get this with 
> 4.0.0... Has anything changed in the way Drools works with Hibernate.
>
>  
>
> Juan
>
>  
>
> 15:24:52,281 ERROR LazyInitializationException:19 - failed to lazily 
> initialize a collection, no session or session was closed
>
> org.hibernate.LazyInitializationException: failed to lazily initialize 
> a collection, no session or session was closed
>
>       at 
> org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
>
>       at 
> org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
>
>       at 
> org.hibernate.collection.AbstractPersistentCollection.readElementExistence(AbstractPersistentCollection.java:132)
>
>       at 
> org.hibernate.collection.PersistentSet.contains(PersistentSet.java:153)
>
>       at 
> org.drools.base.evaluators.ObjectFactory$ObjectContainsEvaluator.evaluateCachedLeft(ObjectFactory.java:481)
>
>       at 
> org.drools.rule.VariableRestriction.isAllowedCachedLeft(VariableRestriction.java:72)
>
>       at 
> org.drools.rule.VariableConstraint.isAllowedCachedLeft(VariableConstraint.java:72)
>
>       at 
> org.drools.common.SingleBetaConstraints.isAllowedCachedLeft(SingleBetaConstraints.java:117)
>
>       at org.drools.reteoo.JoinNode.assertTuple(JoinNode.java:119)
>
>       at 
> org.drools.reteoo.CompositeTupleSinkAdapter.createAndPropagateAssertTuple(CompositeTupleSinkAdapter.java:73)
>
>       at 
> org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:131)
>
>       at 
> org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:20)
>
>       at 
> org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:160)
>
>       at org.drools.reteoo.Rete.assertObject(Rete.java:176)
>
>       at 
> org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:196)
>
>       at 
> org.drools.reteoo.ReteooWorkingMemory.doInsert(ReteooWorkingMemory.java:70)
>
>       at 
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:854)
>
>       at 
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:826)
>
>       at 
> org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:60)
>
>       at 
> org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:54)
>
>       at 
> com.lonmin.bns.domain.rules.Rule_Stope_Drilling_work_is_evaluated_based_on_the_holes_drilled_and_blasts_0.consequence(Rule_Stope_Drilling_work_is_evaluated_based_on_the_holes_drilled_and_blasts_0.java:35)
>
>       at 
> com.lonmin.bns.domain.rules.Rule_Stope_Drilling_work_is_evaluated_based_on_the_holes_drilled_and_blasts_0ConsequenceInvoker.evaluate(Rule_Stope_Drilling_work_is_evaluated_based_on_the_holes_drilled_and_blasts_0ConsequenceInvoker.java:22)
>
>       at 
> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:550)
>
>       at 
> org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:514)
>
>       at 
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:434)
>
>       at 
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:396)
>
>       at 
> com.lonmin.bns.domain.rules.RulesEngine.calculateStopeDrillingBonus(RulesEngine.java:54)
>
>       at 
> com.lonmin.bns.domain.model.StopeDrillingCardPersister.processDetail(StopeDrillingCardPersister.java:371)
>
>       at 
> com.lonmin.bns.domain.model.StopeDrillingCardPersister.processCard(StopeDrillingCardPersister.java:276)
>
>       at 
> com.lonmin.bns.domain.model.StopeDrillingCardPersister.process(StopeDrillingCardPersister.java:69)
>
>       at 
> com.lonmin.bns.domain.model.ValueObjectPersister.persist(ValueObjectPersister.java:38)
>
>       at 
> com.lonmin.bns.domain.model.StopeDrillingCardPersisterTest.testEditStopeDrillingCard(StopeDrillingCardPersisterTest.java:182)
>
>       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:324)
>
>       at junit.framework.TestCase.runTest(TestCase.java:164)
>
>       at junit.framework.TestCase.runBare(TestCase.java:130)
>
>       at junit.framework.TestResult$1.protect(TestResult.java:106)
>
>       at junit.framework.TestResult.runProtected(TestResult.java:124)
>
>       at junit.framework.TestResult.run(TestResult.java:109)
>
>       at junit.framework.TestCase.run(TestCase.java:120)
>
>       at junit.framework.TestSuite.runTest(TestSuite.java:230)
>
>       at junit.framework.TestSuite.run(TestSuite.java:225)
>
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:392)
>
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:276)
>
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:167)
>
> org.hibernate.LazyInitializationException: failed to lazily initialize 
> a collection, no session or session was closed
>
>       at 
> org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
>
>       at 
> org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
>
>       at 
> org.hibernate.collection.AbstractPersistentCollection.readElementExistence(AbstractPersistentCollection.java:132)
>
>       at 
> org.hibernate.collection.PersistentSet.contains(PersistentSet.java:153)
>
>       at 
> org.drools.base.evaluators.ObjectFactory$ObjectContainsEvaluator.evaluateCachedLeft(ObjectFactory.java:481)
>
>       at 
> org.drools.rule.VariableRestriction.isAllowedCachedLeft(VariableRestriction.java:72)
>
>       at 
> org.drools.rule.VariableConstraint.isAllowedCachedLeft(VariableConstraint.java:72)
>
>       at 
> org.drools.common.SingleBetaConstraints.isAllowedCachedLeft(SingleBetaConstraints.java:117)
>
>       at org.drools.reteoo.JoinNode.assertTuple(JoinNode.java:119)
>
>       at 
> org.drools.reteoo.CompositeTupleSinkAdapter.createAndPropagateAssertTuple(CompositeTupleSinkAdapter.java:73)
>
>       at 
> org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:131)
>
>       at 
> org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:20)
>
>       at 
> org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:160)
>
>       at org.drools.reteoo.Rete.assertObject(Rete.java:176)
>
>       at 
> org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:196)
>
>       at 
> org.drools.reteoo.ReteooWorkingMemory.doInsert(ReteooWorkingMemory.java:70)
>
>       at 
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:854)
>
>       at 
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:826)
>
>       at 
> org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:60)
>
>       at 
> org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:54)
>
>       at 
> com.lonmin.bns.domain.rules.Rule_Stope_Drilling_work_is_evaluated_based_on_the_holes_drilled_and_blasts_0.consequence(Rule_Stope_Drilling_work_is_evaluated_based_on_the_holes_drilled_and_blasts_0.java:35)
>
>       at 
> com.lonmin.bns.domain.rules.Rule_Stope_Drilling_work_is_evaluated_based_on_the_holes_drilled_and_blasts_0ConsequenceInvoker.evaluate(Rule_Stope_Drilling_work_is_evaluated_based_on_the_holes_drilled_and_blasts_0ConsequenceInvoker.java:22)
>
>       at 
> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:550)
>
>       at 
> org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:514)
>
>       at 
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:434)
>
>       at 
> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:396)
>
>       at 
> com.lonmin.bns.domain.rules.RulesEngine.calculateStopeDrillingBonus(RulesEngine.java:54)
>
>       at 
> com.lonmin.bns.domain.model.StopeDrillingCardPersister.processDetail(StopeDrillingCardPersister.java:371)
>
>       at 
> com.lonmin.bns.domain.model.StopeDrillingCardPersister.processCard(StopeDrillingCardPersister.java:276)
>
>       at 
> com.lonmin.bns.domain.model.StopeDrillingCardPersister.process(StopeDrillingCardPersister.java:69)
>
>       at 
> com.lonmin.bns.domain.model.ValueObjectPersister.persist(ValueObjectPersister.java:38)
>
>       at 
> com.lonmin.bns.domain.model.StopeDrillingCardPersisterTest.testEditStopeDrillingCard(StopeDrillingCardPersisterTest.java:182)
>
>       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:324)
>
>       at junit.framework.TestCase.runTest(TestCase.java:164)
>
>       at junit.framework.TestCase.runBare(TestCase.java:130)
>
>       at junit.framework.TestResult$1.protect(TestResult.java:106)
>
>       at junit.framework.TestResult.runProtected(TestResult.java:124)
>
>       at junit.framework.TestResult.run(TestResult.java:109)
>
>       at junit.framework.TestCase.run(TestCase.java:120)
>
>       at junit.framework.TestSuite.runTest(TestSuite.java:230)
>
>       at junit.framework.TestSuite.run(TestSuite.java:225)
>
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:392)
>
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:276)
>
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:167)
>
>  
>
> "Employees of Lonmin Platinum ("Lonplats") are not authorised to conclude
> electronic transactions or to enter into electronic agreements on behalf
> of Lonplats. Any electronic signature (other than an advanced electronic
> signature as defined in the Electronic Communications and Transactions
> Act of 2003) added to a data message (such as an email or an attachment
> to an (email) ostensibly on behalf of Lonplats by a Lonplats employee 
> shall
> not be legally binding on Lonplats and Lonplats shall incur no 
> liability of
> any nature whatsoever, directly or indirectly, arising from such act 
> on the
> part of it's employee. It is further recorded that nothing (other than an
> advanced electronic signature) inserted into any data message
> emanating from Lonplats shall be construed as constituting an electronic
> signature"
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>   

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