[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3046) Merge fails on complicated data structure because of cycle references

Pavol Zibrita (JIRA) noreply at atlassian.com
Thu May 28 05:44:14 EDT 2009 

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=33261#action_33261 ] 

Pavol Zibrita commented on HHH-3046:
------------------------------------

Thanks. Seems to work with the test cases. Also the bug HHH-2881 seems to be fixed, however I don't know if it is just a side effect and there is still the mentioned problem, or it can not occur anymore.

So far it seems good, we haven't test it yet on our application, currently there is no spare time for this. But I will certainly let you know if there would be some problems when we will switch to newer version. 
Thanx Gail.

> Merge fails on complicated data structure because of cycle references
> ---------------------------------------------------------------------
>
>                 Key: HHH-3046
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3046
>             Project: Hibernate Core
>          Issue Type: Bug
>    Affects Versions: 3.2.4
>         Environment: Hibernate-3.2.4.ga, db-platform any (h2 &  oracle tested)
>            Reporter: Pavol Zibrita
>         Attachments: HHH3046.hbm.xml, HHH3046Fix_Branch_3_2.patch, HHH3046Fix_entityManager_Branch_3_2.patch, HHH3046Test_entityManager_Branch_3_2.patch, HHH3046TestCase_Branch_3_2.patch, HibernateBug_HHH3046.zip
>
>
> On complicated object structure, hibernate was unable to merge it correctly because of attaching ID's to the new objects in the tree of the persistent entity. Hibernate cannot cope with cyclic references in this case and it fails with:
> javax.persistence.PersistenceException: org.hibernate.PropertyValueException: not-null property references a null or transient value: org.hibernate.bugtests.data.Transport.pickupNode
> 	at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:630)
> 	at org.hibernate.ejb.AbstractEntityManagerImpl.merge(AbstractEntityManagerImpl.java:237)
> 	at org.hibernate.bugtests.merge.MergeBug.mergeData(MergeBug.java:131)
> 	at org.hibernate.bugtests.merge.MergeBug.testBug(MergeBug.java:149)
> 	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:154)
> 	at junit.framework.TestCase.runBare(TestCase.java:127)
> 	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:118)
> 	at junit.framework.TestSuite.runTest(TestSuite.java:208)
> 	at junit.framework.TestSuite.run(TestSuite.java:203)
> 	at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
> 	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
> Caused by: org.hibernate.PropertyValueException: not-null property references a null or transient value: org.hibernate.bugtests.data.Transport.pickupNode
> 	at org.hibernate.engine.Nullability.checkNullability(Nullability.java:72)
> 	at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:290)
> 	at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:181)
> 	at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121)
> 	at org.hibernate.ejb.event.EJB3MergeEventListener.saveWithGeneratedId(EJB3MergeEventListener.java:43)
> 	at org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:186)
> 	at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:123)
> 	at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:687)
> 	at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:669)
> 	at org.hibernate.engine.CascadingAction$6.cascade(CascadingAction.java:245)
> 	at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:268)
> 	at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:216)
> 	at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
> 	at org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:296)
> 	at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:242)
> 	at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:219)
> 	at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
> 	at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
> 	at org.hibernate.event.def.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:456)
> 	at org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:194)
> 	at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:123)
> 	at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:687)
> 	at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:669)
> 	at org.hibernate.engine.CascadingAction$6.cascade(CascadingAction.java:245)
> 	at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:268)
> 	at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:216)
> 	at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
> 	at org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:296)
> 	at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:242)
> 	at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:219)
> 	at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
> 	at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
> 	at org.hibernate.event.def.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:456)
> 	at org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:194)
> 	at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:123)
> 	at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:687)
> 	at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:669)
> 	at org.hibernate.engine.CascadingAction$6.cascade(CascadingAction.java:245)
> 	at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:268)
> 	at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:216)
> 	at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
> 	at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
> 	at org.hibernate.event.def.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:431)
> 	at org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:178)
> 	at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:123)
> 	at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:687)
> 	at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:669)
> 	at org.hibernate.engine.CascadingAction$6.cascade(CascadingAction.java:245)
> 	at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:268)
> 	at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:216)
> 	at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
> 	at org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:296)
> 	at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:242)
> 	at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:219)
> 	at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
> 	at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
> 	at org.hibernate.event.def.DefaultMergeEventListener.cascadeOnMerge(DefaultMergeEventListener.java:407)
> 	at org.hibernate.event.def.DefaultMergeEventListener.entityIsPersistent(DefaultMergeEventListener.java:152)
> 	at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:126)
> 	at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:53)
> 	at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:677)
> 	at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:661)
> 	at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:665)
> 	at org.hibernate.ejb.AbstractEntityManagerImpl.merge(AbstractEntityManagerImpl.java:228)
> 	... 20 more
> However the value is set correctly.

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