Home » Modeling » EMF "Technology" (Ecore Tools, EMFatic, etc) » [teneo] ClassCastException during read of one-to-one mapping
| |
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #58588 is a reply to message #58564] |
Sun, 22 October 2006 13:32   |
 Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi,
Strange. Which ereference is set?
How does the database look like (tables and records in the table)? Do you see anything wrong there?
Can you send me the ecore and a testcase to reproduce this?
gr. Martin
Andre Pareis wrote:
> Here is the stack trace when I run into the code:
>
> 2034641 [main] ERROR org.eclipse.emf.teneo.hibernate.HbStoreException -
> Exception when saving resource trading
> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
> at
> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>
> at
> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>
> at
> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>
> at
> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>
> at
> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
> at
> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>
> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
> at
> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>
> at org.hibernate.loader.Loader.doList(Loader.java:2144)
> at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
> at org.hibernate.loader.Loader.list(Loader.java:2023)
> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
> at
> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>
> at
> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
> at
> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>
> at
> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>
> at
> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>
> at
> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
> at
> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>
> at
> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>
> at
> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>
> at
> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
> at
> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
> at
> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>
> at
> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>
> at
> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>
> at
> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>
> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
> at
> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>
> at
> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>
> at
> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>
> at
> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>
> at
> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>
> at org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
> at
> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>
> at
> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>
> at
> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>
> at
> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>
> at
> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>
> at
> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
> at
> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>
> at
> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>
> at
> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
> at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
> at
> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
> at
> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
> at
> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
> at
> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>
> at
> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>
> at
> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>
> at
> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
> at
> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>
> at org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
> at org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
> at
> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>
> at
> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>
> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
> at
> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
> at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
> at
> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>
> at
> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>
> at
> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>
> at
> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>
> at
> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>
> at
> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
> at org.eclipse.core.launcher.Main.run(Main.java:977)
> at org.eclipse.core.launcher.Main.main(Main.java:952)
>
> Andre Pareis wrote:
>> Hi,
>>
>> I'm having a problem reading back a previously successful stored
>> one-to-one association. During load, a ClassCastException is thrown. I
>> have attached two files, one with the model and the other one with a
>> snapshot of the debugger showing the line which when executed produces
>> a ClassCastException somewhere in the model code. That is, because the
>> eInverseAdd is invoked with the wrong object.
>>
>> The debugger shows that target and value are the same object. The
>> eReference value is strange, because there is actually no
>> corresponding object for this association to be found in the DB.
>>
>> The only objects that are in the DB are the parent of the Yahoo object
>> and the Yahoo object itself. The load of the parent and the Yahoo
>> objects have been passed successfully. Normally, the load should have
>> stopped already as there are no more objects to read - instead, it
>> ends up as shown on the debugger screen.
>>
>> Any ideas?
>>
>> Thanks
>> Andre
>>
>> ------------------------------------------------------------ ------------
>>
>>
>> ------------------------------------------------------------ ------------
>>
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #58612 is a reply to message #58588] |
Sun, 22 October 2006 20:50 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
Hi Martin,
I have upgraded to hibernate 3.2GA but still have the same problem. I
have checked the mapping descriptor for the relevant association (which
I think is Yahoo-YahooIndicesComponentsSource).
The relevant sections:
<joined-subclass entity-name="Yahoo" abstract="false" lazy="false"
extends="Vendor" table="`Yahoo`">
<key>
<column name="`Vendor_id`"/>
</key>
<one-to-one name="indicesComponentsSource"
entity-name="YahooIndicesComponentsSource" cascade="all" lazy="false"/>
...
</joined-subclass>
<joined-subclass entity-name="YahooIndicesComponentsSource"
abstract="false" lazy="false" extends="SymbolSource"
table="`YahooIndicesComponentsSource`">
<key>
<column name="`SymbolSource_id`"/>
</key>
<many-to-one name="vendor" entity-name="Yahoo"
cascade="merge,persist,save-update,lock,refresh" lazy="false"
insert="true" update="true" unique="true"/>
...
</joined-subclass>
What I am missing in this descriptor is the "property-ref" attribute
that I find in the hibernate docs under section "7.4.2 (one-to-one)".
Does teneo take care of the bi-directionality of this association?
If you think the mapping descriptor is ok then I will create a smaller
test case.
Regards
Andre
Martin Taal wrote:
> Hi,
> Strange. Which ereference is set?
> How does the database look like (tables and records in the table)? Do
> you see anything wrong there?
>
> Can you send me the ecore and a testcase to reproduce this?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Here is the stack trace when I run into the code:
>>
>> 2034641 [main] ERROR org.eclipse.emf.teneo.hibernate.HbStoreException
>> - Exception when saving resource trading
>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>> at
>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>
>> at
>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>
>> at
>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>
>> at
>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>> at
>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>
>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>> at
>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>
>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>> at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>> at
>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>
>> at
>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>
>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>
>> at
>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>
>> at
>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>> at
>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>> at
>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>
>> at
>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>
>> at
>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>
>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>> at
>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>
>> at
>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>
>> at
>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>> at
>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>
>> at
>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>
>> at
>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>> at
>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>> at
>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>> at
>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>
>> at
>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>> at
>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>> at
>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>
>> at
>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>
>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>> at
>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>
>> at
>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>
>> at
>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>
>> at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>
>> at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>
>> at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>
>> at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>
>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>
>> at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>
>> at java.lang.reflect.Method.invoke(Method.java:585)
>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>
>> Andre Pareis wrote:
>>> Hi,
>>>
>>> I'm having a problem reading back a previously successful stored
>>> one-to-one association. During load, a ClassCastException is thrown.
>>> I have attached two files, one with the model and the other one with
>>> a snapshot of the debugger showing the line which when executed
>>> produces a ClassCastException somewhere in the model code. That is,
>>> because the eInverseAdd is invoked with the wrong object.
>>>
>>> The debugger shows that target and value are the same object. The
>>> eReference value is strange, because there is actually no
>>> corresponding object for this association to be found in the DB.
>>>
>>> The only objects that are in the DB are the parent of the Yahoo
>>> object and the Yahoo object itself. The load of the parent and the
>>> Yahoo objects have been passed successfully. Normally, the load
>>> should have stopped already as there are no more objects to read -
>>> instead, it ends up as shown on the debugger screen.
>>>
>>> Any ideas?
>>>
>>> Thanks
>>> Andre
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>
>
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #58698 is a reply to message #58588] |
Sun, 22 October 2006 23:00 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
This is a multi-part message in MIME format.
--------------080200070608090005020404
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Content-Transfer-Encoding: 7bit
Hi Martin,
finally I have reduced the problem to a small test case. You should be able to reconstruct the problem by executing the com.pareis.trading.tests.ClientTest in
the test plugin. It uses an included hsqldb which creates its DB files under C:/Temp/options. The model project has a dependency on an "org.hibernate" plugin
containing the hibernate libs but I'm sure you have something similar to replace that with. The model is in the model/options.ecore file but everything is
generated. I'm on EMF 2.2.1 stable.
One more hint: As you can see in the model there are associations between classes of different packages. This might also be a source of the error.
I really hope we can get this fixed otherwise I would have to use non-appropriate one-to-many associations...
Regards
Andre
Martin Taal wrote:
> Hi,
> Strange. Which ereference is set?
> How does the database look like (tables and records in the table)? Do
> you see anything wrong there?
>
> Can you send me the ecore and a testcase to reproduce this?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Here is the stack trace when I run into the code:
>>
>> 2034641 [main] ERROR org.eclipse.emf.teneo.hibernate.HbStoreException
>> - Exception when saving resource trading
>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>> at
>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>
>> at
>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>
>> at
>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>
>> at
>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>> at
>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>
>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>> at
>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>
>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>> at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>> at
>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>
>> at
>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>
>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>
>> at
>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>
>> at
>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>> at
>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>> at
>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>
>> at
>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>
>> at
>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>
>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>> at
>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>
>> at
>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>
>> at
>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>> at
>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>
>> at
>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>
>> at
>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>> at
>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>> at
>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>> at
>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>
>> at
>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>> at
>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>> at
>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>
>> at
>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>
>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>> at
>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>
>> at
>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>
>> at
>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>
>> at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>
>> at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>
>> at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>
>> at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>
>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>
>> at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>
>> at java.lang.reflect.Method.invoke(Method.java:585)
>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>
>> Andre Pareis wrote:
>>> Hi,
>>>
>>> I'm having a problem reading back a previously successful stored
>>> one-to-one association. During load, a ClassCastException is thrown.
>>> I have attached two files, one with the model and the other one with
>>> a snapshot of the debugger showing the line which when executed
>>> produces a ClassCastException somewhere in the model code. That is,
>>> because the eInverseAdd is invoked with the wrong object.
>>>
>>> The debugger shows that target and value are the same object. The
>>> eReference value is strange, because there is actually no
>>> corresponding object for this association to be found in the DB.
>>>
>>> The only objects that are in the DB are the parent of the Yahoo
>>> object and the Yahoo object itself. The load of the parent and the
>>> Yahoo objects have been passed successfully. Normally, the load
>>> should have stopped already as there are no more objects to read -
>>> instead, it ends up as shown on the debugger screen.
>>>
>>> Any ideas?
>>>
>>> Thanks
>>> Andre
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>
>
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| Re: [teneo] ClassCastException during read of one-to-one mapping [message #58881 is a reply to message #58698] |
Tue, 24 October 2006 06:42 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi Andre,
This was/is a complex case. For me it works fine in case of a joined-subclass inheritance strategy
but fails with single-table.
After some debugging in Hibernate I can see that the following happens:
When hibernate loads the vendors association it will also load the one-to-one mappings from Yahoo to
YahooIndicesComponentsSource and YahooIndicesSeed. The onetoone mappings from Yahoo to the other
objects use primary key association (see the hibernate manual for one-to-one) as a default. This
means that when the vendors relation is read also its one-to-one's are read. Because they are all
stored in one table and according to the mapping have the same id column Hibernate thinks that the
one Yahoo record is a YahooIndicesComponentsSource and reads it from the db. Then when the Yahoo
object is read it gets the already read YahooIndicesComponentsSource from the cache (as the id is
the same and the table is the same) and then throws an error because it expects a Yahoo.
At the moment I am not sure where the solution for this can be done. One thing I can think of is
that Teneo should use foreign-key one-to-one instead of the now default primary key.
Can you enter a bugzilla for this issue? Then I will look at it.
As a workaround, does joined-subclass work in your case?
gr. Martin
Andre Pareis wrote:
> Hi Martin,
>
> finally I have reduced the problem to a small test case. You should be
> able to reconstruct the problem by executing the
> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
> included hsqldb which creates its DB files under C:/Temp/options. The
> model project has a dependency on an "org.hibernate" plugin containing
> the hibernate libs but I'm sure you have something similar to replace
> that with. The model is in the model/options.ecore file but everything
> is generated. I'm on EMF 2.2.1 stable.
>
> One more hint: As you can see in the model there are associations
> between classes of different packages. This might also be a source of
> the error.
>
> I really hope we can get this fixed otherwise I would have to use
> non-appropriate one-to-many associations...
>
> Regards
> Andre
>
>
>
> Martin Taal wrote:
>> Hi,
>> Strange. Which ereference is set?
>> How does the database look like (tables and records in the table)? Do
>> you see anything wrong there?
>>
>> Can you send me the ecore and a testcase to reproduce this?
>>
>> gr. Martin
>>
>> Andre Pareis wrote:
>>> Here is the stack trace when I run into the code:
>>>
>>> 2034641 [main] ERROR
>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>> saving resource trading
>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>> at
>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>
>>> at
>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>
>>> at
>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>
>>> at
>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>
>>> at
>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>
>>> at
>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>
>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>> at
>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>
>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>> at
>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>> at
>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>
>>> at
>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>
>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>> at
>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>
>>> at
>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>
>>> at
>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>
>>> at
>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>
>>> at
>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>
>>> at
>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>
>>> at
>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>
>>> at
>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>> at
>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>> at
>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>
>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>> at
>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>
>>> at
>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>
>>> at
>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>
>>> at
>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>
>>> at
>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>
>>> at
>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>> at
>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>> at
>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>
>>> at
>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>
>>> at
>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>> at
>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>
>>> at
>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>> at
>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>> at
>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>
>>> at
>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>
>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>> at
>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>
>>> at
>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>> at
>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>
>>> at
>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>
>>> at
>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>
>>> at
>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>
>>> at
>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>
>>> at
>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>
>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> at
>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>
>>> at
>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>
>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>
>>> Andre Pareis wrote:
>>>> Hi,
>>>>
>>>> I'm having a problem reading back a previously successful stored
>>>> one-to-one association. During load, a ClassCastException is thrown.
>>>> I have attached two files, one with the model and the other one with
>>>> a snapshot of the debugger showing the line which when executed
>>>> produces a ClassCastException somewhere in the model code. That is,
>>>> because the eInverseAdd is invoked with the wrong object.
>>>>
>>>> The debugger shows that target and value are the same object. The
>>>> eReference value is strange, because there is actually no
>>>> corresponding object for this association to be found in the DB.
>>>>
>>>> The only objects that are in the DB are the parent of the Yahoo
>>>> object and the Yahoo object itself. The load of the parent and the
>>>> Yahoo objects have been passed successfully. Normally, the load
>>>> should have stopped already as there are no more objects to read -
>>>> instead, it ends up as shown on the debugger screen.
>>>>
>>>> Any ideas?
>>>>
>>>> Thanks
>>>> Andre
>>>>
>>>> ------------------------------------------------------------ ------------
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------ ------------
>>>>
>>>>
>>
>>
>
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #59163 is a reply to message #58881] |
Tue, 24 October 2006 23:11 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
Hey Martin,
thanks for your detailed analysis!
I think I always used the joined-subclass mapping.
In the DB, I find one table per class.
This is, for instance, how I initialize the teneo layer at the beginning of the ClientTest test case:
final Properties props = new Properties();
props.put(PersistenceOptions.INHERITANCE_MAPPING, "JOINED");
props.put(PersistenceOptions.SQL_CASE_STRATEGY, "none");
hbds.setPersistenceProperties(props);
This is only a quick response for today - I will have a deeper look at the things tomorrow...
Regards
Andre
Martin Taal wrote:
> Hi Andre,
> This was/is a complex case. For me it works fine in case of a
> joined-subclass inheritance strategy but fails with single-table.
>
> After some debugging in Hibernate I can see that the following happens:
> When hibernate loads the vendors association it will also load the
> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
> YahooIndicesSeed. The onetoone mappings from Yahoo to the other objects
> use primary key association (see the hibernate manual for one-to-one) as
> a default. This means that when the vendors relation is read also its
> one-to-one's are read. Because they are all stored in one table and
> according to the mapping have the same id column Hibernate thinks that
> the one Yahoo record is a YahooIndicesComponentsSource and reads it from
> the db. Then when the Yahoo object is read it gets the already read
> YahooIndicesComponentsSource from the cache (as the id is the same and
> the table is the same) and then throws an error because it expects a Yahoo.
>
> At the moment I am not sure where the solution for this can be done. One
> thing I can think of is that Teneo should use foreign-key one-to-one
> instead of the now default primary key.
> Can you enter a bugzilla for this issue? Then I will look at it.
>
> As a workaround, does joined-subclass work in your case?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Hi Martin,
>>
>> finally I have reduced the problem to a small test case. You should be
>> able to reconstruct the problem by executing the
>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>> included hsqldb which creates its DB files under C:/Temp/options. The
>> model project has a dependency on an "org.hibernate" plugin containing
>> the hibernate libs but I'm sure you have something similar to replace
>> that with. The model is in the model/options.ecore file but everything
>> is generated. I'm on EMF 2.2.1 stable.
>>
>> One more hint: As you can see in the model there are associations
>> between classes of different packages. This might also be a source of
>> the error.
>>
>> I really hope we can get this fixed otherwise I would have to use
>> non-appropriate one-to-many associations...
>>
>> Regards
>> Andre
>>
>>
>>
>> Martin Taal wrote:
>>> Hi,
>>> Strange. Which ereference is set?
>>> How does the database look like (tables and records in the table)? Do
>>> you see anything wrong there?
>>>
>>> Can you send me the ecore and a testcase to reproduce this?
>>>
>>> gr. Martin
>>>
>>> Andre Pareis wrote:
>>>> Here is the stack trace when I run into the code:
>>>>
>>>> 2034641 [main] ERROR
>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>>> saving resource trading
>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>> at
>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>
>>>> at
>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>
>>>> at
>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>
>>>> at
>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>
>>>> at
>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>
>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>> at
>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>
>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>> at
>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>> at
>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>
>>>> at
>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>
>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>> at
>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>> at
>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>
>>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>> at
>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>> at
>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>> at
>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>
>>>> at
>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>
>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>
>>>> at
>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>
>>>> at
>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>> at
>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>
>>>> at
>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>
>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>
>>>> Andre Pareis wrote:
>>>>> Hi,
>>>>>
>>>>> I'm having a problem reading back a previously successful stored
>>>>> one-to-one association. During load, a ClassCastException is
>>>>> thrown. I have attached two files, one with the model and the other
>>>>> one with a snapshot of the debugger showing the line which when
>>>>> executed produces a ClassCastException somewhere in the model code.
>>>>> That is, because the eInverseAdd is invoked with the wrong object.
>>>>>
>>>>> The debugger shows that target and value are the same object. The
>>>>> eReference value is strange, because there is actually no
>>>>> corresponding object for this association to be found in the DB.
>>>>>
>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>> object and the Yahoo object itself. The load of the parent and the
>>>>> Yahoo objects have been passed successfully. Normally, the load
>>>>> should have stopped already as there are no more objects to read -
>>>>> instead, it ends up as shown on the debugger screen.
>>>>>
>>>>> Any ideas?
>>>>>
>>>>> Thanks
>>>>> Andre
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>
>>>
>>
>
>
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #60509 is a reply to message #58881] |
Fri, 10 November 2006 12:44 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
Hi Martin,
I'm still having my time with that one...
Do you have any idea what I could do as a temporary workaround?
Can I disable the hibernate cache? Can I add some kind of annotation to embed the owned object in the parent table? Should I use the SUPERCLASS mapping?
I really don't want to change my model to use one-to-many associations only as I would lose the explicitness with that.
Thanks
Andre
Martin Taal wrote:
> Hi Andre,
> This was/is a complex case. For me it works fine in case of a
> joined-subclass inheritance strategy but fails with single-table.
>
> After some debugging in Hibernate I can see that the following happens:
> When hibernate loads the vendors association it will also load the
> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
> YahooIndicesSeed. The onetoone mappings from Yahoo to the other objects
> use primary key association (see the hibernate manual for one-to-one) as
> a default. This means that when the vendors relation is read also its
> one-to-one's are read. Because they are all stored in one table and
> according to the mapping have the same id column Hibernate thinks that
> the one Yahoo record is a YahooIndicesComponentsSource and reads it from
> the db. Then when the Yahoo object is read it gets the already read
> YahooIndicesComponentsSource from the cache (as the id is the same and
> the table is the same) and then throws an error because it expects a Yahoo.
>
> At the moment I am not sure where the solution for this can be done. One
> thing I can think of is that Teneo should use foreign-key one-to-one
> instead of the now default primary key.
> Can you enter a bugzilla for this issue? Then I will look at it.
>
> As a workaround, does joined-subclass work in your case?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Hi Martin,
>>
>> finally I have reduced the problem to a small test case. You should be
>> able to reconstruct the problem by executing the
>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>> included hsqldb which creates its DB files under C:/Temp/options. The
>> model project has a dependency on an "org.hibernate" plugin containing
>> the hibernate libs but I'm sure you have something similar to replace
>> that with. The model is in the model/options.ecore file but everything
>> is generated. I'm on EMF 2.2.1 stable.
>>
>> One more hint: As you can see in the model there are associations
>> between classes of different packages. This might also be a source of
>> the error.
>>
>> I really hope we can get this fixed otherwise I would have to use
>> non-appropriate one-to-many associations...
>>
>> Regards
>> Andre
>>
>>
>>
>> Martin Taal wrote:
>>> Hi,
>>> Strange. Which ereference is set?
>>> How does the database look like (tables and records in the table)? Do
>>> you see anything wrong there?
>>>
>>> Can you send me the ecore and a testcase to reproduce this?
>>>
>>> gr. Martin
>>>
>>> Andre Pareis wrote:
>>>> Here is the stack trace when I run into the code:
>>>>
>>>> 2034641 [main] ERROR
>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>>> saving resource trading
>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>> at
>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>
>>>> at
>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>
>>>> at
>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>
>>>> at
>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>
>>>> at
>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>
>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>> at
>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>
>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>> at
>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>> at
>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>
>>>> at
>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>
>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>> at
>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>> at
>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>
>>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>> at
>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>> at
>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>> at
>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>
>>>> at
>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>
>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>
>>>> at
>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>
>>>> at
>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>> at
>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>
>>>> at
>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>
>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>
>>>> Andre Pareis wrote:
>>>>> Hi,
>>>>>
>>>>> I'm having a problem reading back a previously successful stored
>>>>> one-to-one association. During load, a ClassCastException is
>>>>> thrown. I have attached two files, one with the model and the other
>>>>> one with a snapshot of the debugger showing the line which when
>>>>> executed produces a ClassCastException somewhere in the model code.
>>>>> That is, because the eInverseAdd is invoked with the wrong object.
>>>>>
>>>>> The debugger shows that target and value are the same object. The
>>>>> eReference value is strange, because there is actually no
>>>>> corresponding object for this association to be found in the DB.
>>>>>
>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>> object and the Yahoo object itself. The load of the parent and the
>>>>> Yahoo objects have been passed successfully. Normally, the load
>>>>> should have stopped already as there are no more objects to read -
>>>>> instead, it ends up as shown on the debugger screen.
>>>>>
>>>>> Any ideas?
>>>>>
>>>>> Thanks
>>>>> Andre
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>
>>>
>>
>
>
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #60528 is a reply to message #60509] |
Fri, 10 November 2006 13:20 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi Andre,
I didn't have time to look at this issue. However today and tomorrow I will work on a number of
Teneo issues. I will also look further at this one.
Can you test if superclass (single-table) also fails?
gr. Martin
Andre Pareis wrote:
> Hi Martin,
>
> I'm still having my time with that one...
>
> Do you have any idea what I could do as a temporary workaround?
>
> Can I disable the hibernate cache? Can I add some kind of annotation to
> embed the owned object in the parent table? Should I use the SUPERCLASS
> mapping?
>
> I really don't want to change my model to use one-to-many associations
> only as I would lose the explicitness with that.
>
> Thanks
> Andre
>
>
> Martin Taal wrote:
>> Hi Andre,
>> This was/is a complex case. For me it works fine in case of a
>> joined-subclass inheritance strategy but fails with single-table.
>>
>> After some debugging in Hibernate I can see that the following happens:
>> When hibernate loads the vendors association it will also load the
>> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
>> YahooIndicesSeed. The onetoone mappings from Yahoo to the other
>> objects use primary key association (see the hibernate manual for
>> one-to-one) as a default. This means that when the vendors relation is
>> read also its one-to-one's are read. Because they are all stored in
>> one table and according to the mapping have the same id column
>> Hibernate thinks that the one Yahoo record is a
>> YahooIndicesComponentsSource and reads it from the db. Then when the
>> Yahoo object is read it gets the already read
>> YahooIndicesComponentsSource from the cache (as the id is the same and
>> the table is the same) and then throws an error because it expects a
>> Yahoo.
>>
>> At the moment I am not sure where the solution for this can be done.
>> One thing I can think of is that Teneo should use foreign-key
>> one-to-one instead of the now default primary key.
>> Can you enter a bugzilla for this issue? Then I will look at it.
>>
>> As a workaround, does joined-subclass work in your case?
>>
>> gr. Martin
>>
>> Andre Pareis wrote:
>>> Hi Martin,
>>>
>>> finally I have reduced the problem to a small test case. You should
>>> be able to reconstruct the problem by executing the
>>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>>> included hsqldb which creates its DB files under C:/Temp/options. The
>>> model project has a dependency on an "org.hibernate" plugin
>>> containing the hibernate libs but I'm sure you have something similar
>>> to replace that with. The model is in the model/options.ecore file
>>> but everything is generated. I'm on EMF 2.2.1 stable.
>>>
>>> One more hint: As you can see in the model there are associations
>>> between classes of different packages. This might also be a source of
>>> the error.
>>>
>>> I really hope we can get this fixed otherwise I would have to use
>>> non-appropriate one-to-many associations...
>>>
>>> Regards
>>> Andre
>>>
>>>
>>>
>>> Martin Taal wrote:
>>>> Hi,
>>>> Strange. Which ereference is set?
>>>> How does the database look like (tables and records in the table)?
>>>> Do you see anything wrong there?
>>>>
>>>> Can you send me the ecore and a testcase to reproduce this?
>>>>
>>>> gr. Martin
>>>>
>>>> Andre Pareis wrote:
>>>>> Here is the stack trace when I run into the code:
>>>>>
>>>>> 2034641 [main] ERROR
>>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>>>> saving resource trading
>>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>>> at
>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>>
>>>>> at
>>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>>
>>>>> at
>>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>>
>>>>> at
>>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>>
>>>>> at
>>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>>
>>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>>> at
>>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>>
>>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>>> at
>>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>>> at
>>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>>
>>>>> at
>>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>>
>>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>>> at
>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>>
>>>>> at
>>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>>>
>>>>> at
>>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>>
>>>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>>> at
>>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>>> at
>>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>>> at
>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>>
>>>>> at
>>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>>
>>>>> at
>>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>>
>>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>> at
>>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>>
>>>>> at
>>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>>
>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>> at
>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>
>>>>> at
>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>
>>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>>
>>>>> Andre Pareis wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I'm having a problem reading back a previously successful stored
>>>>>> one-to-one association. During load, a ClassCastException is
>>>>>> thrown. I have attached two files, one with the model and the
>>>>>> other one with a snapshot of the debugger showing the line which
>>>>>> when executed produces a ClassCastException somewhere in the model
>>>>>> code. That is, because the eInverseAdd is invoked with the wrong
>>>>>> object.
>>>>>>
>>>>>> The debugger shows that target and value are the same object. The
>>>>>> eReference value is strange, because there is actually no
>>>>>> corresponding object for this association to be found in the DB.
>>>>>>
>>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>>> object and the Yahoo object itself. The load of the parent and the
>>>>>> Yahoo objects have been passed successfully. Normally, the load
>>>>>> should have stopped already as there are no more objects to read -
>>>>>> instead, it ends up as shown on the debugger screen.
>>>>>>
>>>>>> Any ideas?
>>>>>>
>>>>>> Thanks
>>>>>> Andre
>>>>>>
>>>>>> ------------------------------------------------------------ ------------
>>>>>>
>>>>>>
>>>>>>
>>>>>> ------------------------------------------------------------ ------------
>>>>>>
>>>>>>
>>>>
>>>>
>>>
>>
>>
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #60546 is a reply to message #60528] |
Fri, 10 November 2006 13:39 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
Yes I just did that. It also fails but with a slightly different error:
org.hibernate.WrongClassException: Object with id: 2 was not of the specified subclass: Yahoo (loaded object was of wrong class class
com.pareis.trading.yahoo.impl.YahooIndicesComponentsSourceIm pl)
at org.hibernate.loader.Loader.instanceAlreadyLoaded(Loader.jav a:1234)
at org.hibernate.loader.Loader.getRow(Loader.java:1186)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java: 568)
at org.hibernate.loader.Loader.doQuery(Loader.java:689)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
at org.hibernate.loader.Loader.loadCollection(Loader.java:1918)
at org.hibernate.loader.collection.CollectionLoader.initialize( CollectionLoader.java:36)
at org.hibernate.persister.collection.AbstractCollectionPersist er.initialize(AbstractCollectionPersister.java:565)
at org.hibernate.event.def.DefaultInitializeCollectionEventList ener.onInitializeCollection(DefaultInitializeCollectionEvent Listener.java:60)
at org.hibernate.impl.SessionImpl.initializeCollection(SessionI mpl.java:1716)
at org.hibernate.collection.AbstractPersistentCollection.initia lize(AbstractPersistentCollection.java:344)
at org.hibernate.collection.AbstractPersistentCollection.read(A bstractPersistentCollection.java:86)
at org.hibernate.collection.PersistentList.toArray(PersistentLi st.java:123)
at org.eclipse.emf.teneo.hibernate.mapping.elist.HibernatePersi stableEList.doLoad(HibernatePersistableEList.java:106)
at org.eclipse.emf.teneo.mapping.elist.PersistableEList.load(Pe rsistableEList.java:187)
at org.eclipse.emf.teneo.mapping.elist.PersistableEList.delegat eGet(PersistableEList.java:305)
at org.eclipse.emf.common.util.DelegatingEList.get(DelegatingEL ist.java:378)
at com.pareis.trading.tests.ClientTest.testBug(ClientTest.java: 128)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
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.JUnit3TestRefer ence.run(JUnit3TestReference.java:128)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(Test Execution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTe sts(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTe sts(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(R emoteTestRunner.java:386)
at org.eclipse.pde.internal.junit.runtime.RemotePluginTestRunne r.main(RemotePluginTestRunner.java:58)
at org.eclipse.pde.internal.junit.runtime.CoreTestApplication.r un(CoreTestApplication.java:24)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)
It seems that this time hibernate itself recognizes that it made a mistake.
-Andre
Martin Taal wrote:
> Hi Andre,
> I didn't have time to look at this issue. However today and tomorrow I
> will work on a number of Teneo issues. I will also look further at this
> one.
>
> Can you test if superclass (single-table) also fails?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Hi Martin,
>>
>> I'm still having my time with that one...
>>
>> Do you have any idea what I could do as a temporary workaround?
>>
>> Can I disable the hibernate cache? Can I add some kind of annotation
>> to embed the owned object in the parent table? Should I use the
>> SUPERCLASS mapping?
>>
>> I really don't want to change my model to use one-to-many associations
>> only as I would lose the explicitness with that.
>>
>> Thanks
>> Andre
>>
>>
>> Martin Taal wrote:
>>> Hi Andre,
>>> This was/is a complex case. For me it works fine in case of a
>>> joined-subclass inheritance strategy but fails with single-table.
>>>
>>> After some debugging in Hibernate I can see that the following happens:
>>> When hibernate loads the vendors association it will also load the
>>> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
>>> YahooIndicesSeed. The onetoone mappings from Yahoo to the other
>>> objects use primary key association (see the hibernate manual for
>>> one-to-one) as a default. This means that when the vendors relation
>>> is read also its one-to-one's are read. Because they are all stored
>>> in one table and according to the mapping have the same id column
>>> Hibernate thinks that the one Yahoo record is a
>>> YahooIndicesComponentsSource and reads it from the db. Then when the
>>> Yahoo object is read it gets the already read
>>> YahooIndicesComponentsSource from the cache (as the id is the same
>>> and the table is the same) and then throws an error because it
>>> expects a Yahoo.
>>>
>>> At the moment I am not sure where the solution for this can be done.
>>> One thing I can think of is that Teneo should use foreign-key
>>> one-to-one instead of the now default primary key.
>>> Can you enter a bugzilla for this issue? Then I will look at it.
>>>
>>> As a workaround, does joined-subclass work in your case?
>>>
>>> gr. Martin
>>>
>>> Andre Pareis wrote:
>>>> Hi Martin,
>>>>
>>>> finally I have reduced the problem to a small test case. You should
>>>> be able to reconstruct the problem by executing the
>>>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>>>> included hsqldb which creates its DB files under C:/Temp/options.
>>>> The model project has a dependency on an "org.hibernate" plugin
>>>> containing the hibernate libs but I'm sure you have something
>>>> similar to replace that with. The model is in the
>>>> model/options.ecore file but everything is generated. I'm on EMF
>>>> 2.2.1 stable.
>>>>
>>>> One more hint: As you can see in the model there are associations
>>>> between classes of different packages. This might also be a source
>>>> of the error.
>>>>
>>>> I really hope we can get this fixed otherwise I would have to use
>>>> non-appropriate one-to-many associations...
>>>>
>>>> Regards
>>>> Andre
>>>>
>>>>
>>>>
>>>> Martin Taal wrote:
>>>>> Hi,
>>>>> Strange. Which ereference is set?
>>>>> How does the database look like (tables and records in the table)?
>>>>> Do you see anything wrong there?
>>>>>
>>>>> Can you send me the ecore and a testcase to reproduce this?
>>>>>
>>>>> gr. Martin
>>>>>
>>>>> Andre Pareis wrote:
>>>>>> Here is the stack trace when I run into the code:
>>>>>>
>>>>>> 2034641 [main] ERROR
>>>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>>>>> saving resource trading
>>>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>>>> at
>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>>>
>>>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>>>> at
>>>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>>>
>>>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>>>> at
>>>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>>>> at
>>>>>> org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>>>> at
>>>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>>>
>>>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>>>
>>>>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>>>> at
>>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>>>
>>>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>>>
>>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>>> at
>>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>>
>>>>>> at
>>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>>
>>>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>>>
>>>>>> Andre Pareis wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> I'm having a problem reading back a previously successful stored
>>>>>>> one-to-one association. During load, a ClassCastException is
>>>>>>> thrown. I have attached two files, one with the model and the
>>>>>>> other one with a snapshot of the debugger showing the line which
>>>>>>> when executed produces a ClassCastException somewhere in the
>>>>>>> model code. That is, because the eInverseAdd is invoked with the
>>>>>>> wrong object.
>>>>>>>
>>>>>>> The debugger shows that target and value are the same object. The
>>>>>>> eReference value is strange, because there is actually no
>>>>>>> corresponding object for this association to be found in the DB.
>>>>>>>
>>>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>>>> object and the Yahoo object itself. The load of the parent and
>>>>>>> the Yahoo objects have been passed successfully. Normally, the
>>>>>>> load should have stopped already as there are no more objects to
>>>>>>> read - instead, it ends up as shown on the debugger screen.
>>>>>>>
>>>>>>> Any ideas?
>>>>>>>
>>>>>>> Thanks
>>>>>>> Andre
>>>>>>>
>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>
>>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>
>
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #60568 is a reply to message #60528] |
Fri, 10 November 2006 15:12 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
Hi Martin,
because I seriously needed this part of the model now, and after a few attempts
to solve the issue using annotations I gave up and changed the model to utilize
a one-to-many associations instead of many one-to-one's. SO basically I have
found my workaround and it is not urgent any more...
THanks
Andre
Martin Taal wrote:
> Hi Andre,
> I didn't have time to look at this issue. However today and tomorrow I
> will work on a number of Teneo issues. I will also look further at this
> one.
>
> Can you test if superclass (single-table) also fails?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Hi Martin,
>>
>> I'm still having my time with that one...
>>
>> Do you have any idea what I could do as a temporary workaround?
>>
>> Can I disable the hibernate cache? Can I add some kind of annotation
>> to embed the owned object in the parent table? Should I use the
>> SUPERCLASS mapping?
>>
>> I really don't want to change my model to use one-to-many associations
>> only as I would lose the explicitness with that.
>>
>> Thanks
>> Andre
>>
>>
>> Martin Taal wrote:
>>> Hi Andre,
>>> This was/is a complex case. For me it works fine in case of a
>>> joined-subclass inheritance strategy but fails with single-table.
>>>
>>> After some debugging in Hibernate I can see that the following happens:
>>> When hibernate loads the vendors association it will also load the
>>> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
>>> YahooIndicesSeed. The onetoone mappings from Yahoo to the other
>>> objects use primary key association (see the hibernate manual for
>>> one-to-one) as a default. This means that when the vendors relation
>>> is read also its one-to-one's are read. Because they are all stored
>>> in one table and according to the mapping have the same id column
>>> Hibernate thinks that the one Yahoo record is a
>>> YahooIndicesComponentsSource and reads it from the db. Then when the
>>> Yahoo object is read it gets the already read
>>> YahooIndicesComponentsSource from the cache (as the id is the same
>>> and the table is the same) and then throws an error because it
>>> expects a Yahoo.
>>>
>>> At the moment I am not sure where the solution for this can be done.
>>> One thing I can think of is that Teneo should use foreign-key
>>> one-to-one instead of the now default primary key.
>>> Can you enter a bugzilla for this issue? Then I will look at it.
>>>
>>> As a workaround, does joined-subclass work in your case?
>>>
>>> gr. Martin
>>>
>>> Andre Pareis wrote:
>>>> Hi Martin,
>>>>
>>>> finally I have reduced the problem to a small test case. You should
>>>> be able to reconstruct the problem by executing the
>>>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>>>> included hsqldb which creates its DB files under C:/Temp/options.
>>>> The model project has a dependency on an "org.hibernate" plugin
>>>> containing the hibernate libs but I'm sure you have something
>>>> similar to replace that with. The model is in the
>>>> model/options.ecore file but everything is generated. I'm on EMF
>>>> 2.2.1 stable.
>>>>
>>>> One more hint: As you can see in the model there are associations
>>>> between classes of different packages. This might also be a source
>>>> of the error.
>>>>
>>>> I really hope we can get this fixed otherwise I would have to use
>>>> non-appropriate one-to-many associations...
>>>>
>>>> Regards
>>>> Andre
>>>>
>>>>
>>>>
>>>> Martin Taal wrote:
>>>>> Hi,
>>>>> Strange. Which ereference is set?
>>>>> How does the database look like (tables and records in the table)?
>>>>> Do you see anything wrong there?
>>>>>
>>>>> Can you send me the ecore and a testcase to reproduce this?
>>>>>
>>>>> gr. Martin
>>>>>
>>>>> Andre Pareis wrote:
>>>>>> Here is the stack trace when I run into the code:
>>>>>>
>>>>>> 2034641 [main] ERROR
>>>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>>>>> saving resource trading
>>>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>>>> at
>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>>>
>>>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>>>> at
>>>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>>>
>>>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>>>> at
>>>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>>>> at
>>>>>> org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>>>> at
>>>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>>>
>>>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>>>
>>>>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>>>> at
>>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>>>
>>>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>>>
>>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>>> at
>>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>>
>>>>>> at
>>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>>
>>>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>>>
>>>>>> Andre Pareis wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> I'm having a problem reading back a previously successful stored
>>>>>>> one-to-one association. During load, a ClassCastException is
>>>>>>> thrown. I have attached two files, one with the model and the
>>>>>>> other one with a snapshot of the debugger showing the line which
>>>>>>> when executed produces a ClassCastException somewhere in the
>>>>>>> model code. That is, because the eInverseAdd is invoked with the
>>>>>>> wrong object.
>>>>>>>
>>>>>>> The debugger shows that target and value are the same object. The
>>>>>>> eReference value is strange, because there is actually no
>>>>>>> corresponding object for this association to be found in the DB.
>>>>>>>
>>>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>>>> object and the Yahoo object itself. The load of the parent and
>>>>>>> the Yahoo objects have been passed successfully. Normally, the
>>>>>>> load should have stopped already as there are no more objects to
>>>>>>> read - instead, it ends up as shown on the debugger screen.
>>>>>>>
>>>>>>> Any ideas?
>>>>>>>
>>>>>>> Thanks
>>>>>>> Andre
>>>>>>>
>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>
>>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>
>
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #60921 is a reply to message #60568] |
Fri, 10 November 2006 20:08 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi Andre,
Well I added the property-ref to the one-to-one and now the test cases pass (the joined passed
anyway, but now single-table also passed). Are you able to test this by manually adapting the hbm.xml?
The property-ref should contain the efeature name on the opposite side.
I should have read your post on 22/10/06 better as you already mentioned this...
gr. Martin
Andre Pareis wrote:
> Hi Martin,
>
> because I seriously needed this part of the model now, and after a few
> attempts to solve the issue using annotations I gave up and changed the
> model to utilize a one-to-many associations instead of many
> one-to-one's. SO basically I have found my workaround and it is not
> urgent any more...
>
> THanks
> Andre
>
>
> Martin Taal wrote:
>> Hi Andre,
>> I didn't have time to look at this issue. However today and tomorrow I
>> will work on a number of Teneo issues. I will also look further at
>> this one.
>>
>> Can you test if superclass (single-table) also fails?
>>
>> gr. Martin
>>
>> Andre Pareis wrote:
>>> Hi Martin,
>>>
>>> I'm still having my time with that one...
>>>
>>> Do you have any idea what I could do as a temporary workaround?
>>>
>>> Can I disable the hibernate cache? Can I add some kind of annotation
>>> to embed the owned object in the parent table? Should I use the
>>> SUPERCLASS mapping?
>>>
>>> I really don't want to change my model to use one-to-many
>>> associations only as I would lose the explicitness with that.
>>>
>>> Thanks
>>> Andre
>>>
>>>
>>> Martin Taal wrote:
>>>> Hi Andre,
>>>> This was/is a complex case. For me it works fine in case of a
>>>> joined-subclass inheritance strategy but fails with single-table.
>>>>
>>>> After some debugging in Hibernate I can see that the following happens:
>>>> When hibernate loads the vendors association it will also load the
>>>> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
>>>> YahooIndicesSeed. The onetoone mappings from Yahoo to the other
>>>> objects use primary key association (see the hibernate manual for
>>>> one-to-one) as a default. This means that when the vendors relation
>>>> is read also its one-to-one's are read. Because they are all stored
>>>> in one table and according to the mapping have the same id column
>>>> Hibernate thinks that the one Yahoo record is a
>>>> YahooIndicesComponentsSource and reads it from the db. Then when the
>>>> Yahoo object is read it gets the already read
>>>> YahooIndicesComponentsSource from the cache (as the id is the same
>>>> and the table is the same) and then throws an error because it
>>>> expects a Yahoo.
>>>>
>>>> At the moment I am not sure where the solution for this can be done.
>>>> One thing I can think of is that Teneo should use foreign-key
>>>> one-to-one instead of the now default primary key.
>>>> Can you enter a bugzilla for this issue? Then I will look at it.
>>>>
>>>> As a workaround, does joined-subclass work in your case?
>>>>
>>>> gr. Martin
>>>>
>>>> Andre Pareis wrote:
>>>>> Hi Martin,
>>>>>
>>>>> finally I have reduced the problem to a small test case. You should
>>>>> be able to reconstruct the problem by executing the
>>>>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>>>>> included hsqldb which creates its DB files under C:/Temp/options.
>>>>> The model project has a dependency on an "org.hibernate" plugin
>>>>> containing the hibernate libs but I'm sure you have something
>>>>> similar to replace that with. The model is in the
>>>>> model/options.ecore file but everything is generated. I'm on EMF
>>>>> 2.2.1 stable.
>>>>>
>>>>> One more hint: As you can see in the model there are associations
>>>>> between classes of different packages. This might also be a source
>>>>> of the error.
>>>>>
>>>>> I really hope we can get this fixed otherwise I would have to use
>>>>> non-appropriate one-to-many associations...
>>>>>
>>>>> Regards
>>>>> Andre
>>>>>
>>>>>
>>>>>
>>>>> Martin Taal wrote:
>>>>>> Hi,
>>>>>> Strange. Which ereference is set?
>>>>>> How does the database look like (tables and records in the table)?
>>>>>> Do you see anything wrong there?
>>>>>>
>>>>>> Can you send me the ecore and a testcase to reproduce this?
>>>>>>
>>>>>> gr. Martin
>>>>>>
>>>>>> Andre Pareis wrote:
>>>>>>> Here is the stack trace when I run into the code:
>>>>>>>
>>>>>>> 2034641 [main] ERROR
>>>>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception
>>>>>>> when saving resource trading
>>>>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>>>>> at
>>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>>>>
>>>>>>> at
>>>>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>>>>
>>>>>>> at
>>>>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>>>>
>>>>>>> at
>>>>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>>>>
>>>>>>> at
>>>>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>>>>
>>>>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>>>>> at
>>>>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>>>>
>>>>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>>>>> at
>>>>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>>>>> at
>>>>>>> org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>>>>> at
>>>>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>>>>
>>>>>>> at
>>>>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>>>>
>>>>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>>>>> at
>>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>>>>
>>>>>>> at
>>>>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>>>>>
>>>>>>> at
>>>>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>>>>> at
>>>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>>>>
>>>>>>> at
>>>>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>>>>
>>>>>>> at
>>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>>>>
>>>>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>>>> at
>>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>>>>
>>>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>>>> at
>>>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>>>
>>>>>>> at
>>>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>>>
>>>>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>>>>
>>>>>>> Andre Pareis wrote:
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> I'm having a problem reading back a previously successful stored
>>>>>>>> one-to-one association. During load, a ClassCastException is
>>>>>>>> thrown. I have attached two files, one with the model and the
>>>>>>>> other one with a snapshot of the debugger showing the line which
>>>>>>>> when executed produces a ClassCastException somewhere in the
>>>>>>>> model code. That is, because the eInverseAdd is invoked with the
>>>>>>>> wrong object.
>>>>>>>>
>>>>>>>> The debugger shows that target and value are the same object.
>>>>>>>> The eReference value is strange, because there is actually no
>>>>>>>> corresponding object for this association to be found in the DB.
>>>>>>>>
>>>>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>>>>> object and the Yahoo object itself. The load of the parent and
>>>>>>>> the Yahoo objects have been passed successfully. Normally, the
>>>>>>>> load should have stopped already as there are no more objects to
>>>>>>>> read - instead, it ends up as shown on the debugger screen.
>>>>>>>>
>>>>>>>> Any ideas?
>>>>>>>>
>>>>>>>> Thanks
>>>>>>>> Andre
>>>>>>>>
>>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>>
>>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>
>>
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
| |
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #594581 is a reply to message #58564] |
Sun, 22 October 2006 13:32 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi,
Strange. Which ereference is set?
How does the database look like (tables and records in the table)? Do you see anything wrong there?
Can you send me the ecore and a testcase to reproduce this?
gr. Martin
Andre Pareis wrote:
> Here is the stack trace when I run into the code:
>
> 2034641 [main] ERROR org.eclipse.emf.teneo.hibernate.HbStoreException -
> Exception when saving resource trading
> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
> at
> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>
> at
> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>
> at
> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>
> at
> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>
> at
> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
> at
> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>
> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
> at
> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>
> at org.hibernate.loader.Loader.doList(Loader.java:2144)
> at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
> at org.hibernate.loader.Loader.list(Loader.java:2023)
> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
> at
> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>
> at
> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
> at
> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>
> at
> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>
> at
> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>
> at
> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
> at
> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>
> at
> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>
> at
> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>
> at
> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
> at
> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
> at
> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>
> at
> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>
> at
> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>
> at
> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>
> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
> at
> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>
> at
> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>
> at
> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>
> at
> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>
> at
> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>
> at org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
> at
> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>
> at
> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>
> at
> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>
> at
> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>
> at
> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>
> at
> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
> at
> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>
> at
> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>
> at
> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
> at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
> at
> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
> at
> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
> at
> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
> at
> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>
> at
> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>
> at
> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>
> at
> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
> at
> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>
> at org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
> at org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
> at
> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>
> at
> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>
> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
> at
> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
> at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
> at
> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>
> at
> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>
> at
> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>
> at
> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>
> at
> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>
> at
> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
> at org.eclipse.core.launcher.Main.run(Main.java:977)
> at org.eclipse.core.launcher.Main.main(Main.java:952)
>
> Andre Pareis wrote:
>> Hi,
>>
>> I'm having a problem reading back a previously successful stored
>> one-to-one association. During load, a ClassCastException is thrown. I
>> have attached two files, one with the model and the other one with a
>> snapshot of the debugger showing the line which when executed produces
>> a ClassCastException somewhere in the model code. That is, because the
>> eInverseAdd is invoked with the wrong object.
>>
>> The debugger shows that target and value are the same object. The
>> eReference value is strange, because there is actually no
>> corresponding object for this association to be found in the DB.
>>
>> The only objects that are in the DB are the parent of the Yahoo object
>> and the Yahoo object itself. The load of the parent and the Yahoo
>> objects have been passed successfully. Normally, the load should have
>> stopped already as there are no more objects to read - instead, it
>> ends up as shown on the debugger screen.
>>
>> Any ideas?
>>
>> Thanks
>> Andre
>>
>> ------------------------------------------------------------ ------------
>>
>>
>> ------------------------------------------------------------ ------------
>>
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #594594 is a reply to message #58588] |
Sun, 22 October 2006 20:50 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
Hi Martin,
I have upgraded to hibernate 3.2GA but still have the same problem. I
have checked the mapping descriptor for the relevant association (which
I think is Yahoo-YahooIndicesComponentsSource).
The relevant sections:
<joined-subclass entity-name="Yahoo" abstract="false" lazy="false"
extends="Vendor" table="`Yahoo`">
<key>
<column name="`Vendor_id`"/>
</key>
<one-to-one name="indicesComponentsSource"
entity-name="YahooIndicesComponentsSource" cascade="all" lazy="false"/>
...
</joined-subclass>
<joined-subclass entity-name="YahooIndicesComponentsSource"
abstract="false" lazy="false" extends="SymbolSource"
table="`YahooIndicesComponentsSource`">
<key>
<column name="`SymbolSource_id`"/>
</key>
<many-to-one name="vendor" entity-name="Yahoo"
cascade="merge,persist,save-update,lock,refresh" lazy="false"
insert="true" update="true" unique="true"/>
...
</joined-subclass>
What I am missing in this descriptor is the "property-ref" attribute
that I find in the hibernate docs under section "7.4.2 (one-to-one)".
Does teneo take care of the bi-directionality of this association?
If you think the mapping descriptor is ok then I will create a smaller
test case.
Regards
Andre
Martin Taal wrote:
> Hi,
> Strange. Which ereference is set?
> How does the database look like (tables and records in the table)? Do
> you see anything wrong there?
>
> Can you send me the ecore and a testcase to reproduce this?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Here is the stack trace when I run into the code:
>>
>> 2034641 [main] ERROR org.eclipse.emf.teneo.hibernate.HbStoreException
>> - Exception when saving resource trading
>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>> at
>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>
>> at
>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>
>> at
>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>
>> at
>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>> at
>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>
>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>> at
>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>
>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>> at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>> at
>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>
>> at
>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>
>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>
>> at
>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>
>> at
>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>> at
>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>> at
>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>
>> at
>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>
>> at
>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>
>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>> at
>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>
>> at
>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>
>> at
>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>> at
>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>
>> at
>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>
>> at
>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>> at
>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>> at
>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>> at
>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>
>> at
>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>> at
>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>> at
>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>
>> at
>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>
>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>> at
>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>
>> at
>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>
>> at
>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>
>> at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>
>> at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>
>> at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>
>> at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>
>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>
>> at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>
>> at java.lang.reflect.Method.invoke(Method.java:585)
>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>
>> Andre Pareis wrote:
>>> Hi,
>>>
>>> I'm having a problem reading back a previously successful stored
>>> one-to-one association. During load, a ClassCastException is thrown.
>>> I have attached two files, one with the model and the other one with
>>> a snapshot of the debugger showing the line which when executed
>>> produces a ClassCastException somewhere in the model code. That is,
>>> because the eInverseAdd is invoked with the wrong object.
>>>
>>> The debugger shows that target and value are the same object. The
>>> eReference value is strange, because there is actually no
>>> corresponding object for this association to be found in the DB.
>>>
>>> The only objects that are in the DB are the parent of the Yahoo
>>> object and the Yahoo object itself. The load of the parent and the
>>> Yahoo objects have been passed successfully. Normally, the load
>>> should have stopped already as there are no more objects to read -
>>> instead, it ends up as shown on the debugger screen.
>>>
>>> Any ideas?
>>>
>>> Thanks
>>> Andre
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>
>
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #594601 is a reply to message #58588] |
Sun, 22 October 2006 23:00 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
This is a multi-part message in MIME format.
--------------080200070608090005020404
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Content-Transfer-Encoding: 7bit
Hi Martin,
finally I have reduced the problem to a small test case. You should be able to reconstruct the problem by executing the com.pareis.trading.tests.ClientTest in
the test plugin. It uses an included hsqldb which creates its DB files under C:/Temp/options. The model project has a dependency on an "org.hibernate" plugin
containing the hibernate libs but I'm sure you have something similar to replace that with. The model is in the model/options.ecore file but everything is
generated. I'm on EMF 2.2.1 stable.
One more hint: As you can see in the model there are associations between classes of different packages. This might also be a source of the error.
I really hope we can get this fixed otherwise I would have to use non-appropriate one-to-many associations...
Regards
Andre
Martin Taal wrote:
> Hi,
> Strange. Which ereference is set?
> How does the database look like (tables and records in the table)? Do
> you see anything wrong there?
>
> Can you send me the ecore and a testcase to reproduce this?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Here is the stack trace when I run into the code:
>>
>> 2034641 [main] ERROR org.eclipse.emf.teneo.hibernate.HbStoreException
>> - Exception when saving resource trading
>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>> at
>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>
>> at
>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>
>> at
>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>
>> at
>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>> at
>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>
>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>> at
>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>
>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>> at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>> at
>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>
>> at
>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>
>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>
>> at
>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>
>> at
>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>
>> at
>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>> at
>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>> at
>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>
>> at
>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>
>> at
>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>
>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>> at
>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>
>> at
>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>
>> at
>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>
>> at
>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>> at
>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>
>> at
>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>
>> at
>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>
>> at
>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>> at
>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>> at
>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>> at
>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>
>> at
>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>> at
>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>
>> at
>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>> at
>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>> at
>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>
>> at
>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>
>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>> at
>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>
>> at
>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>> at
>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>
>> at
>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>
>> at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>
>> at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>
>> at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>
>> at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>
>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>
>> at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>
>> at java.lang.reflect.Method.invoke(Method.java:585)
>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>
>> Andre Pareis wrote:
>>> Hi,
>>>
>>> I'm having a problem reading back a previously successful stored
>>> one-to-one association. During load, a ClassCastException is thrown.
>>> I have attached two files, one with the model and the other one with
>>> a snapshot of the debugger showing the line which when executed
>>> produces a ClassCastException somewhere in the model code. That is,
>>> because the eInverseAdd is invoked with the wrong object.
>>>
>>> The debugger shows that target and value are the same object. The
>>> eReference value is strange, because there is actually no
>>> corresponding object for this association to be found in the DB.
>>>
>>> The only objects that are in the DB are the parent of the Yahoo
>>> object and the Yahoo object itself. The load of the parent and the
>>> Yahoo objects have been passed successfully. Normally, the load
>>> should have stopped already as there are no more objects to read -
>>> instead, it ends up as shown on the debugger screen.
>>>
>>> Any ideas?
>>>
>>> Thanks
>>> Andre
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>
>
--------------080200070608090005020404
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name="problem.zip"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
filename="problem.zip"
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|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #594670 is a reply to message #58698] |
Tue, 24 October 2006 06:42 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi Andre,
This was/is a complex case. For me it works fine in case of a joined-subclass inheritance strategy
but fails with single-table.
After some debugging in Hibernate I can see that the following happens:
When hibernate loads the vendors association it will also load the one-to-one mappings from Yahoo to
YahooIndicesComponentsSource and YahooIndicesSeed. The onetoone mappings from Yahoo to the other
objects use primary key association (see the hibernate manual for one-to-one) as a default. This
means that when the vendors relation is read also its one-to-one's are read. Because they are all
stored in one table and according to the mapping have the same id column Hibernate thinks that the
one Yahoo record is a YahooIndicesComponentsSource and reads it from the db. Then when the Yahoo
object is read it gets the already read YahooIndicesComponentsSource from the cache (as the id is
the same and the table is the same) and then throws an error because it expects a Yahoo.
At the moment I am not sure where the solution for this can be done. One thing I can think of is
that Teneo should use foreign-key one-to-one instead of the now default primary key.
Can you enter a bugzilla for this issue? Then I will look at it.
As a workaround, does joined-subclass work in your case?
gr. Martin
Andre Pareis wrote:
> Hi Martin,
>
> finally I have reduced the problem to a small test case. You should be
> able to reconstruct the problem by executing the
> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
> included hsqldb which creates its DB files under C:/Temp/options. The
> model project has a dependency on an "org.hibernate" plugin containing
> the hibernate libs but I'm sure you have something similar to replace
> that with. The model is in the model/options.ecore file but everything
> is generated. I'm on EMF 2.2.1 stable.
>
> One more hint: As you can see in the model there are associations
> between classes of different packages. This might also be a source of
> the error.
>
> I really hope we can get this fixed otherwise I would have to use
> non-appropriate one-to-many associations...
>
> Regards
> Andre
>
>
>
> Martin Taal wrote:
>> Hi,
>> Strange. Which ereference is set?
>> How does the database look like (tables and records in the table)? Do
>> you see anything wrong there?
>>
>> Can you send me the ecore and a testcase to reproduce this?
>>
>> gr. Martin
>>
>> Andre Pareis wrote:
>>> Here is the stack trace when I run into the code:
>>>
>>> 2034641 [main] ERROR
>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>> saving resource trading
>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>> at
>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>
>>> at
>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>
>>> at
>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>
>>> at
>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>
>>> at
>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>
>>> at
>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>
>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>> at
>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>
>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>> at
>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>> at
>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>
>>> at
>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>
>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>> at
>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>
>>> at
>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>
>>> at
>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>
>>> at
>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>
>>> at
>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>
>>> at
>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>
>>> at
>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>
>>> at
>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>> at
>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>> at
>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>
>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>> at
>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>
>>> at
>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>
>>> at
>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>
>>> at
>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>
>>> at
>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>
>>> at
>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>> at
>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>
>>> at
>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>> at
>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>
>>> at
>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>
>>> at
>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>
>>> at
>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>> at
>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>
>>> at
>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>> at
>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>> at
>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>
>>> at
>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>
>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>> at
>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>
>>> at
>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>> at
>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>
>>> at
>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>
>>> at
>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>
>>> at
>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>
>>> at
>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>
>>> at
>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>
>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> at
>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>
>>> at
>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>
>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>
>>> Andre Pareis wrote:
>>>> Hi,
>>>>
>>>> I'm having a problem reading back a previously successful stored
>>>> one-to-one association. During load, a ClassCastException is thrown.
>>>> I have attached two files, one with the model and the other one with
>>>> a snapshot of the debugger showing the line which when executed
>>>> produces a ClassCastException somewhere in the model code. That is,
>>>> because the eInverseAdd is invoked with the wrong object.
>>>>
>>>> The debugger shows that target and value are the same object. The
>>>> eReference value is strange, because there is actually no
>>>> corresponding object for this association to be found in the DB.
>>>>
>>>> The only objects that are in the DB are the parent of the Yahoo
>>>> object and the Yahoo object itself. The load of the parent and the
>>>> Yahoo objects have been passed successfully. Normally, the load
>>>> should have stopped already as there are no more objects to read -
>>>> instead, it ends up as shown on the debugger screen.
>>>>
>>>> Any ideas?
>>>>
>>>> Thanks
>>>> Andre
>>>>
>>>> ------------------------------------------------------------ ------------
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------ ------------
>>>>
>>>>
>>
>>
>
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #594776 is a reply to message #58881] |
Tue, 24 October 2006 23:11 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
Hey Martin,
thanks for your detailed analysis!
I think I always used the joined-subclass mapping.
In the DB, I find one table per class.
This is, for instance, how I initialize the teneo layer at the beginning of the ClientTest test case:
final Properties props = new Properties();
props.put(PersistenceOptions.INHERITANCE_MAPPING, "JOINED");
props.put(PersistenceOptions.SQL_CASE_STRATEGY, "none");
hbds.setPersistenceProperties(props);
This is only a quick response for today - I will have a deeper look at the things tomorrow...
Regards
Andre
Martin Taal wrote:
> Hi Andre,
> This was/is a complex case. For me it works fine in case of a
> joined-subclass inheritance strategy but fails with single-table.
>
> After some debugging in Hibernate I can see that the following happens:
> When hibernate loads the vendors association it will also load the
> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
> YahooIndicesSeed. The onetoone mappings from Yahoo to the other objects
> use primary key association (see the hibernate manual for one-to-one) as
> a default. This means that when the vendors relation is read also its
> one-to-one's are read. Because they are all stored in one table and
> according to the mapping have the same id column Hibernate thinks that
> the one Yahoo record is a YahooIndicesComponentsSource and reads it from
> the db. Then when the Yahoo object is read it gets the already read
> YahooIndicesComponentsSource from the cache (as the id is the same and
> the table is the same) and then throws an error because it expects a Yahoo.
>
> At the moment I am not sure where the solution for this can be done. One
> thing I can think of is that Teneo should use foreign-key one-to-one
> instead of the now default primary key.
> Can you enter a bugzilla for this issue? Then I will look at it.
>
> As a workaround, does joined-subclass work in your case?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Hi Martin,
>>
>> finally I have reduced the problem to a small test case. You should be
>> able to reconstruct the problem by executing the
>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>> included hsqldb which creates its DB files under C:/Temp/options. The
>> model project has a dependency on an "org.hibernate" plugin containing
>> the hibernate libs but I'm sure you have something similar to replace
>> that with. The model is in the model/options.ecore file but everything
>> is generated. I'm on EMF 2.2.1 stable.
>>
>> One more hint: As you can see in the model there are associations
>> between classes of different packages. This might also be a source of
>> the error.
>>
>> I really hope we can get this fixed otherwise I would have to use
>> non-appropriate one-to-many associations...
>>
>> Regards
>> Andre
>>
>>
>>
>> Martin Taal wrote:
>>> Hi,
>>> Strange. Which ereference is set?
>>> How does the database look like (tables and records in the table)? Do
>>> you see anything wrong there?
>>>
>>> Can you send me the ecore and a testcase to reproduce this?
>>>
>>> gr. Martin
>>>
>>> Andre Pareis wrote:
>>>> Here is the stack trace when I run into the code:
>>>>
>>>> 2034641 [main] ERROR
>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>>> saving resource trading
>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>> at
>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>
>>>> at
>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>
>>>> at
>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>
>>>> at
>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>
>>>> at
>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>
>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>> at
>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>
>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>> at
>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>> at
>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>
>>>> at
>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>
>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>> at
>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>> at
>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>
>>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>> at
>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>> at
>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>> at
>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>
>>>> at
>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>
>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>
>>>> at
>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>
>>>> at
>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>> at
>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>
>>>> at
>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>
>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>
>>>> Andre Pareis wrote:
>>>>> Hi,
>>>>>
>>>>> I'm having a problem reading back a previously successful stored
>>>>> one-to-one association. During load, a ClassCastException is
>>>>> thrown. I have attached two files, one with the model and the other
>>>>> one with a snapshot of the debugger showing the line which when
>>>>> executed produces a ClassCastException somewhere in the model code.
>>>>> That is, because the eInverseAdd is invoked with the wrong object.
>>>>>
>>>>> The debugger shows that target and value are the same object. The
>>>>> eReference value is strange, because there is actually no
>>>>> corresponding object for this association to be found in the DB.
>>>>>
>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>> object and the Yahoo object itself. The load of the parent and the
>>>>> Yahoo objects have been passed successfully. Normally, the load
>>>>> should have stopped already as there are no more objects to read -
>>>>> instead, it ends up as shown on the debugger screen.
>>>>>
>>>>> Any ideas?
>>>>>
>>>>> Thanks
>>>>> Andre
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>
>>>
>>
>
>
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #595368 is a reply to message #58881] |
Fri, 10 November 2006 12:44 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
Hi Martin,
I'm still having my time with that one...
Do you have any idea what I could do as a temporary workaround?
Can I disable the hibernate cache? Can I add some kind of annotation to embed the owned object in the parent table? Should I use the SUPERCLASS mapping?
I really don't want to change my model to use one-to-many associations only as I would lose the explicitness with that.
Thanks
Andre
Martin Taal wrote:
> Hi Andre,
> This was/is a complex case. For me it works fine in case of a
> joined-subclass inheritance strategy but fails with single-table.
>
> After some debugging in Hibernate I can see that the following happens:
> When hibernate loads the vendors association it will also load the
> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
> YahooIndicesSeed. The onetoone mappings from Yahoo to the other objects
> use primary key association (see the hibernate manual for one-to-one) as
> a default. This means that when the vendors relation is read also its
> one-to-one's are read. Because they are all stored in one table and
> according to the mapping have the same id column Hibernate thinks that
> the one Yahoo record is a YahooIndicesComponentsSource and reads it from
> the db. Then when the Yahoo object is read it gets the already read
> YahooIndicesComponentsSource from the cache (as the id is the same and
> the table is the same) and then throws an error because it expects a Yahoo.
>
> At the moment I am not sure where the solution for this can be done. One
> thing I can think of is that Teneo should use foreign-key one-to-one
> instead of the now default primary key.
> Can you enter a bugzilla for this issue? Then I will look at it.
>
> As a workaround, does joined-subclass work in your case?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Hi Martin,
>>
>> finally I have reduced the problem to a small test case. You should be
>> able to reconstruct the problem by executing the
>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>> included hsqldb which creates its DB files under C:/Temp/options. The
>> model project has a dependency on an "org.hibernate" plugin containing
>> the hibernate libs but I'm sure you have something similar to replace
>> that with. The model is in the model/options.ecore file but everything
>> is generated. I'm on EMF 2.2.1 stable.
>>
>> One more hint: As you can see in the model there are associations
>> between classes of different packages. This might also be a source of
>> the error.
>>
>> I really hope we can get this fixed otherwise I would have to use
>> non-appropriate one-to-many associations...
>>
>> Regards
>> Andre
>>
>>
>>
>> Martin Taal wrote:
>>> Hi,
>>> Strange. Which ereference is set?
>>> How does the database look like (tables and records in the table)? Do
>>> you see anything wrong there?
>>>
>>> Can you send me the ecore and a testcase to reproduce this?
>>>
>>> gr. Martin
>>>
>>> Andre Pareis wrote:
>>>> Here is the stack trace when I run into the code:
>>>>
>>>> 2034641 [main] ERROR
>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>>> saving resource trading
>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>> at
>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>
>>>> at
>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>
>>>> at
>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>
>>>> at
>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>
>>>> at
>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>
>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>> at
>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>
>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>> at
>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>> at
>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>
>>>> at
>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>
>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>
>>>> at
>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>> at
>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>> at
>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>
>>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>> at
>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>> at
>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>> at
>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>> at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>> at
>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>
>>>> at
>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>
>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>
>>>> at
>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>> at
>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>
>>>> at
>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>> at
>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>
>>>> at
>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>
>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>
>>>> Andre Pareis wrote:
>>>>> Hi,
>>>>>
>>>>> I'm having a problem reading back a previously successful stored
>>>>> one-to-one association. During load, a ClassCastException is
>>>>> thrown. I have attached two files, one with the model and the other
>>>>> one with a snapshot of the debugger showing the line which when
>>>>> executed produces a ClassCastException somewhere in the model code.
>>>>> That is, because the eInverseAdd is invoked with the wrong object.
>>>>>
>>>>> The debugger shows that target and value are the same object. The
>>>>> eReference value is strange, because there is actually no
>>>>> corresponding object for this association to be found in the DB.
>>>>>
>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>> object and the Yahoo object itself. The load of the parent and the
>>>>> Yahoo objects have been passed successfully. Normally, the load
>>>>> should have stopped already as there are no more objects to read -
>>>>> instead, it ends up as shown on the debugger screen.
>>>>>
>>>>> Any ideas?
>>>>>
>>>>> Thanks
>>>>> Andre
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>
>>>
>>
>
>
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #595377 is a reply to message #60509] |
Fri, 10 November 2006 13:20 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi Andre,
I didn't have time to look at this issue. However today and tomorrow I will work on a number of
Teneo issues. I will also look further at this one.
Can you test if superclass (single-table) also fails?
gr. Martin
Andre Pareis wrote:
> Hi Martin,
>
> I'm still having my time with that one...
>
> Do you have any idea what I could do as a temporary workaround?
>
> Can I disable the hibernate cache? Can I add some kind of annotation to
> embed the owned object in the parent table? Should I use the SUPERCLASS
> mapping?
>
> I really don't want to change my model to use one-to-many associations
> only as I would lose the explicitness with that.
>
> Thanks
> Andre
>
>
> Martin Taal wrote:
>> Hi Andre,
>> This was/is a complex case. For me it works fine in case of a
>> joined-subclass inheritance strategy but fails with single-table.
>>
>> After some debugging in Hibernate I can see that the following happens:
>> When hibernate loads the vendors association it will also load the
>> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
>> YahooIndicesSeed. The onetoone mappings from Yahoo to the other
>> objects use primary key association (see the hibernate manual for
>> one-to-one) as a default. This means that when the vendors relation is
>> read also its one-to-one's are read. Because they are all stored in
>> one table and according to the mapping have the same id column
>> Hibernate thinks that the one Yahoo record is a
>> YahooIndicesComponentsSource and reads it from the db. Then when the
>> Yahoo object is read it gets the already read
>> YahooIndicesComponentsSource from the cache (as the id is the same and
>> the table is the same) and then throws an error because it expects a
>> Yahoo.
>>
>> At the moment I am not sure where the solution for this can be done.
>> One thing I can think of is that Teneo should use foreign-key
>> one-to-one instead of the now default primary key.
>> Can you enter a bugzilla for this issue? Then I will look at it.
>>
>> As a workaround, does joined-subclass work in your case?
>>
>> gr. Martin
>>
>> Andre Pareis wrote:
>>> Hi Martin,
>>>
>>> finally I have reduced the problem to a small test case. You should
>>> be able to reconstruct the problem by executing the
>>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>>> included hsqldb which creates its DB files under C:/Temp/options. The
>>> model project has a dependency on an "org.hibernate" plugin
>>> containing the hibernate libs but I'm sure you have something similar
>>> to replace that with. The model is in the model/options.ecore file
>>> but everything is generated. I'm on EMF 2.2.1 stable.
>>>
>>> One more hint: As you can see in the model there are associations
>>> between classes of different packages. This might also be a source of
>>> the error.
>>>
>>> I really hope we can get this fixed otherwise I would have to use
>>> non-appropriate one-to-many associations...
>>>
>>> Regards
>>> Andre
>>>
>>>
>>>
>>> Martin Taal wrote:
>>>> Hi,
>>>> Strange. Which ereference is set?
>>>> How does the database look like (tables and records in the table)?
>>>> Do you see anything wrong there?
>>>>
>>>> Can you send me the ecore and a testcase to reproduce this?
>>>>
>>>> gr. Martin
>>>>
>>>> Andre Pareis wrote:
>>>>> Here is the stack trace when I run into the code:
>>>>>
>>>>> 2034641 [main] ERROR
>>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>>>> saving resource trading
>>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>>> at
>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>>
>>>>> at
>>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>>
>>>>> at
>>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>>
>>>>> at
>>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>>
>>>>> at
>>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>>
>>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>>> at
>>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>>
>>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>>> at
>>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>>> at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>>> at
>>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>>
>>>>> at
>>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>>
>>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>>> at
>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>>
>>>>> at
>>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>>>
>>>>> at
>>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>>
>>>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>>> at
>>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>>> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>>> at
>>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>>> at
>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>>
>>>>> at
>>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>>
>>>>> at
>>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>>> at
>>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>>
>>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>> at
>>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>>
>>>>> at
>>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>>
>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>> at
>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>
>>>>> at
>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>
>>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>>
>>>>> Andre Pareis wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I'm having a problem reading back a previously successful stored
>>>>>> one-to-one association. During load, a ClassCastException is
>>>>>> thrown. I have attached two files, one with the model and the
>>>>>> other one with a snapshot of the debugger showing the line which
>>>>>> when executed produces a ClassCastException somewhere in the model
>>>>>> code. That is, because the eInverseAdd is invoked with the wrong
>>>>>> object.
>>>>>>
>>>>>> The debugger shows that target and value are the same object. The
>>>>>> eReference value is strange, because there is actually no
>>>>>> corresponding object for this association to be found in the DB.
>>>>>>
>>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>>> object and the Yahoo object itself. The load of the parent and the
>>>>>> Yahoo objects have been passed successfully. Normally, the load
>>>>>> should have stopped already as there are no more objects to read -
>>>>>> instead, it ends up as shown on the debugger screen.
>>>>>>
>>>>>> Any ideas?
>>>>>>
>>>>>> Thanks
>>>>>> Andre
>>>>>>
>>>>>> ------------------------------------------------------------ ------------
>>>>>>
>>>>>>
>>>>>>
>>>>>> ------------------------------------------------------------ ------------
>>>>>>
>>>>>>
>>>>
>>>>
>>>
>>
>>
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #595388 is a reply to message #60528] |
Fri, 10 November 2006 13:39 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
Yes I just did that. It also fails but with a slightly different error:
org.hibernate.WrongClassException: Object with id: 2 was not of the specified subclass: Yahoo (loaded object was of wrong class class
com.pareis.trading.yahoo.impl.YahooIndicesComponentsSourceIm pl)
at org.hibernate.loader.Loader.instanceAlreadyLoaded(Loader.jav a:1234)
at org.hibernate.loader.Loader.getRow(Loader.java:1186)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java: 568)
at org.hibernate.loader.Loader.doQuery(Loader.java:689)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
at org.hibernate.loader.Loader.loadCollection(Loader.java:1918)
at org.hibernate.loader.collection.CollectionLoader.initialize( CollectionLoader.java:36)
at org.hibernate.persister.collection.AbstractCollectionPersist er.initialize(AbstractCollectionPersister.java:565)
at org.hibernate.event.def.DefaultInitializeCollectionEventList ener.onInitializeCollection(DefaultInitializeCollectionEvent Listener.java:60)
at org.hibernate.impl.SessionImpl.initializeCollection(SessionI mpl.java:1716)
at org.hibernate.collection.AbstractPersistentCollection.initia lize(AbstractPersistentCollection.java:344)
at org.hibernate.collection.AbstractPersistentCollection.read(A bstractPersistentCollection.java:86)
at org.hibernate.collection.PersistentList.toArray(PersistentLi st.java:123)
at org.eclipse.emf.teneo.hibernate.mapping.elist.HibernatePersi stableEList.doLoad(HibernatePersistableEList.java:106)
at org.eclipse.emf.teneo.mapping.elist.PersistableEList.load(Pe rsistableEList.java:187)
at org.eclipse.emf.teneo.mapping.elist.PersistableEList.delegat eGet(PersistableEList.java:305)
at org.eclipse.emf.common.util.DelegatingEList.get(DelegatingEL ist.java:378)
at com.pareis.trading.tests.ClientTest.testBug(ClientTest.java: 128)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
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.JUnit3TestRefer ence.run(JUnit3TestReference.java:128)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(Test Execution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTe sts(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTe sts(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(R emoteTestRunner.java:386)
at org.eclipse.pde.internal.junit.runtime.RemotePluginTestRunne r.main(RemotePluginTestRunner.java:58)
at org.eclipse.pde.internal.junit.runtime.CoreTestApplication.r un(CoreTestApplication.java:24)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)
It seems that this time hibernate itself recognizes that it made a mistake.
-Andre
Martin Taal wrote:
> Hi Andre,
> I didn't have time to look at this issue. However today and tomorrow I
> will work on a number of Teneo issues. I will also look further at this
> one.
>
> Can you test if superclass (single-table) also fails?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Hi Martin,
>>
>> I'm still having my time with that one...
>>
>> Do you have any idea what I could do as a temporary workaround?
>>
>> Can I disable the hibernate cache? Can I add some kind of annotation
>> to embed the owned object in the parent table? Should I use the
>> SUPERCLASS mapping?
>>
>> I really don't want to change my model to use one-to-many associations
>> only as I would lose the explicitness with that.
>>
>> Thanks
>> Andre
>>
>>
>> Martin Taal wrote:
>>> Hi Andre,
>>> This was/is a complex case. For me it works fine in case of a
>>> joined-subclass inheritance strategy but fails with single-table.
>>>
>>> After some debugging in Hibernate I can see that the following happens:
>>> When hibernate loads the vendors association it will also load the
>>> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
>>> YahooIndicesSeed. The onetoone mappings from Yahoo to the other
>>> objects use primary key association (see the hibernate manual for
>>> one-to-one) as a default. This means that when the vendors relation
>>> is read also its one-to-one's are read. Because they are all stored
>>> in one table and according to the mapping have the same id column
>>> Hibernate thinks that the one Yahoo record is a
>>> YahooIndicesComponentsSource and reads it from the db. Then when the
>>> Yahoo object is read it gets the already read
>>> YahooIndicesComponentsSource from the cache (as the id is the same
>>> and the table is the same) and then throws an error because it
>>> expects a Yahoo.
>>>
>>> At the moment I am not sure where the solution for this can be done.
>>> One thing I can think of is that Teneo should use foreign-key
>>> one-to-one instead of the now default primary key.
>>> Can you enter a bugzilla for this issue? Then I will look at it.
>>>
>>> As a workaround, does joined-subclass work in your case?
>>>
>>> gr. Martin
>>>
>>> Andre Pareis wrote:
>>>> Hi Martin,
>>>>
>>>> finally I have reduced the problem to a small test case. You should
>>>> be able to reconstruct the problem by executing the
>>>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>>>> included hsqldb which creates its DB files under C:/Temp/options.
>>>> The model project has a dependency on an "org.hibernate" plugin
>>>> containing the hibernate libs but I'm sure you have something
>>>> similar to replace that with. The model is in the
>>>> model/options.ecore file but everything is generated. I'm on EMF
>>>> 2.2.1 stable.
>>>>
>>>> One more hint: As you can see in the model there are associations
>>>> between classes of different packages. This might also be a source
>>>> of the error.
>>>>
>>>> I really hope we can get this fixed otherwise I would have to use
>>>> non-appropriate one-to-many associations...
>>>>
>>>> Regards
>>>> Andre
>>>>
>>>>
>>>>
>>>> Martin Taal wrote:
>>>>> Hi,
>>>>> Strange. Which ereference is set?
>>>>> How does the database look like (tables and records in the table)?
>>>>> Do you see anything wrong there?
>>>>>
>>>>> Can you send me the ecore and a testcase to reproduce this?
>>>>>
>>>>> gr. Martin
>>>>>
>>>>> Andre Pareis wrote:
>>>>>> Here is the stack trace when I run into the code:
>>>>>>
>>>>>> 2034641 [main] ERROR
>>>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>>>>> saving resource trading
>>>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>>>> at
>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>>>
>>>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>>>> at
>>>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>>>
>>>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>>>> at
>>>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>>>> at
>>>>>> org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>>>> at
>>>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>>>
>>>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>>>
>>>>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>>>> at
>>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>>>
>>>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>>>
>>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>>> at
>>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>>
>>>>>> at
>>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>>
>>>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>>>
>>>>>> Andre Pareis wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> I'm having a problem reading back a previously successful stored
>>>>>>> one-to-one association. During load, a ClassCastException is
>>>>>>> thrown. I have attached two files, one with the model and the
>>>>>>> other one with a snapshot of the debugger showing the line which
>>>>>>> when executed produces a ClassCastException somewhere in the
>>>>>>> model code. That is, because the eInverseAdd is invoked with the
>>>>>>> wrong object.
>>>>>>>
>>>>>>> The debugger shows that target and value are the same object. The
>>>>>>> eReference value is strange, because there is actually no
>>>>>>> corresponding object for this association to be found in the DB.
>>>>>>>
>>>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>>>> object and the Yahoo object itself. The load of the parent and
>>>>>>> the Yahoo objects have been passed successfully. Normally, the
>>>>>>> load should have stopped already as there are no more objects to
>>>>>>> read - instead, it ends up as shown on the debugger screen.
>>>>>>>
>>>>>>> Any ideas?
>>>>>>>
>>>>>>> Thanks
>>>>>>> Andre
>>>>>>>
>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>
>>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>
>
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #595405 is a reply to message #60528] |
Fri, 10 November 2006 15:12 |
Andre Pareis
Messages: 113
Registered: July 2009 |
Senior Member |
|
|
Hi Martin,
because I seriously needed this part of the model now, and after a few attempts
to solve the issue using annotations I gave up and changed the model to utilize
a one-to-many associations instead of many one-to-one's. SO basically I have
found my workaround and it is not urgent any more...
THanks
Andre
Martin Taal wrote:
> Hi Andre,
> I didn't have time to look at this issue. However today and tomorrow I
> will work on a number of Teneo issues. I will also look further at this
> one.
>
> Can you test if superclass (single-table) also fails?
>
> gr. Martin
>
> Andre Pareis wrote:
>> Hi Martin,
>>
>> I'm still having my time with that one...
>>
>> Do you have any idea what I could do as a temporary workaround?
>>
>> Can I disable the hibernate cache? Can I add some kind of annotation
>> to embed the owned object in the parent table? Should I use the
>> SUPERCLASS mapping?
>>
>> I really don't want to change my model to use one-to-many associations
>> only as I would lose the explicitness with that.
>>
>> Thanks
>> Andre
>>
>>
>> Martin Taal wrote:
>>> Hi Andre,
>>> This was/is a complex case. For me it works fine in case of a
>>> joined-subclass inheritance strategy but fails with single-table.
>>>
>>> After some debugging in Hibernate I can see that the following happens:
>>> When hibernate loads the vendors association it will also load the
>>> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
>>> YahooIndicesSeed. The onetoone mappings from Yahoo to the other
>>> objects use primary key association (see the hibernate manual for
>>> one-to-one) as a default. This means that when the vendors relation
>>> is read also its one-to-one's are read. Because they are all stored
>>> in one table and according to the mapping have the same id column
>>> Hibernate thinks that the one Yahoo record is a
>>> YahooIndicesComponentsSource and reads it from the db. Then when the
>>> Yahoo object is read it gets the already read
>>> YahooIndicesComponentsSource from the cache (as the id is the same
>>> and the table is the same) and then throws an error because it
>>> expects a Yahoo.
>>>
>>> At the moment I am not sure where the solution for this can be done.
>>> One thing I can think of is that Teneo should use foreign-key
>>> one-to-one instead of the now default primary key.
>>> Can you enter a bugzilla for this issue? Then I will look at it.
>>>
>>> As a workaround, does joined-subclass work in your case?
>>>
>>> gr. Martin
>>>
>>> Andre Pareis wrote:
>>>> Hi Martin,
>>>>
>>>> finally I have reduced the problem to a small test case. You should
>>>> be able to reconstruct the problem by executing the
>>>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>>>> included hsqldb which creates its DB files under C:/Temp/options.
>>>> The model project has a dependency on an "org.hibernate" plugin
>>>> containing the hibernate libs but I'm sure you have something
>>>> similar to replace that with. The model is in the
>>>> model/options.ecore file but everything is generated. I'm on EMF
>>>> 2.2.1 stable.
>>>>
>>>> One more hint: As you can see in the model there are associations
>>>> between classes of different packages. This might also be a source
>>>> of the error.
>>>>
>>>> I really hope we can get this fixed otherwise I would have to use
>>>> non-appropriate one-to-many associations...
>>>>
>>>> Regards
>>>> Andre
>>>>
>>>>
>>>>
>>>> Martin Taal wrote:
>>>>> Hi,
>>>>> Strange. Which ereference is set?
>>>>> How does the database look like (tables and records in the table)?
>>>>> Do you see anything wrong there?
>>>>>
>>>>> Can you send me the ecore and a testcase to reproduce this?
>>>>>
>>>>> gr. Martin
>>>>>
>>>>> Andre Pareis wrote:
>>>>>> Here is the stack trace when I run into the code:
>>>>>>
>>>>>> 2034641 [main] ERROR
>>>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception when
>>>>>> saving resource trading
>>>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>>>> at
>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>>>
>>>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>>>> at
>>>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>>>
>>>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>>>> at
>>>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>>>> at
>>>>>> org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>>>> at
>>>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>>>
>>>>>> at
>>>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>>>
>>>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>>>
>>>>>> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>>>> at
>>>>>> org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>>>> at
>>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>>>
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>>>> at
>>>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>>>
>>>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>>> at
>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>>>
>>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>>> at
>>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>>
>>>>>> at
>>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>>
>>>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>>>
>>>>>> Andre Pareis wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> I'm having a problem reading back a previously successful stored
>>>>>>> one-to-one association. During load, a ClassCastException is
>>>>>>> thrown. I have attached two files, one with the model and the
>>>>>>> other one with a snapshot of the debugger showing the line which
>>>>>>> when executed produces a ClassCastException somewhere in the
>>>>>>> model code. That is, because the eInverseAdd is invoked with the
>>>>>>> wrong object.
>>>>>>>
>>>>>>> The debugger shows that target and value are the same object. The
>>>>>>> eReference value is strange, because there is actually no
>>>>>>> corresponding object for this association to be found in the DB.
>>>>>>>
>>>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>>>> object and the Yahoo object itself. The load of the parent and
>>>>>>> the Yahoo objects have been passed successfully. Normally, the
>>>>>>> load should have stopped already as there are no more objects to
>>>>>>> read - instead, it ends up as shown on the debugger screen.
>>>>>>>
>>>>>>> Any ideas?
>>>>>>>
>>>>>>> Thanks
>>>>>>> Andre
>>>>>>>
>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>
>>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>
>
|
|
|
| Re: [teneo] ClassCastException during read of one-to-one mapping [message #595444 is a reply to message #60568] |
Fri, 10 November 2006 20:08 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Hi Andre,
Well I added the property-ref to the one-to-one and now the test cases pass (the joined passed
anyway, but now single-table also passed). Are you able to test this by manually adapting the hbm.xml?
The property-ref should contain the efeature name on the opposite side.
I should have read your post on 22/10/06 better as you already mentioned this...
gr. Martin
Andre Pareis wrote:
> Hi Martin,
>
> because I seriously needed this part of the model now, and after a few
> attempts to solve the issue using annotations I gave up and changed the
> model to utilize a one-to-many associations instead of many
> one-to-one's. SO basically I have found my workaround and it is not
> urgent any more...
>
> THanks
> Andre
>
>
> Martin Taal wrote:
>> Hi Andre,
>> I didn't have time to look at this issue. However today and tomorrow I
>> will work on a number of Teneo issues. I will also look further at
>> this one.
>>
>> Can you test if superclass (single-table) also fails?
>>
>> gr. Martin
>>
>> Andre Pareis wrote:
>>> Hi Martin,
>>>
>>> I'm still having my time with that one...
>>>
>>> Do you have any idea what I could do as a temporary workaround?
>>>
>>> Can I disable the hibernate cache? Can I add some kind of annotation
>>> to embed the owned object in the parent table? Should I use the
>>> SUPERCLASS mapping?
>>>
>>> I really don't want to change my model to use one-to-many
>>> associations only as I would lose the explicitness with that.
>>>
>>> Thanks
>>> Andre
>>>
>>>
>>> Martin Taal wrote:
>>>> Hi Andre,
>>>> This was/is a complex case. For me it works fine in case of a
>>>> joined-subclass inheritance strategy but fails with single-table.
>>>>
>>>> After some debugging in Hibernate I can see that the following happens:
>>>> When hibernate loads the vendors association it will also load the
>>>> one-to-one mappings from Yahoo to YahooIndicesComponentsSource and
>>>> YahooIndicesSeed. The onetoone mappings from Yahoo to the other
>>>> objects use primary key association (see the hibernate manual for
>>>> one-to-one) as a default. This means that when the vendors relation
>>>> is read also its one-to-one's are read. Because they are all stored
>>>> in one table and according to the mapping have the same id column
>>>> Hibernate thinks that the one Yahoo record is a
>>>> YahooIndicesComponentsSource and reads it from the db. Then when the
>>>> Yahoo object is read it gets the already read
>>>> YahooIndicesComponentsSource from the cache (as the id is the same
>>>> and the table is the same) and then throws an error because it
>>>> expects a Yahoo.
>>>>
>>>> At the moment I am not sure where the solution for this can be done.
>>>> One thing I can think of is that Teneo should use foreign-key
>>>> one-to-one instead of the now default primary key.
>>>> Can you enter a bugzilla for this issue? Then I will look at it.
>>>>
>>>> As a workaround, does joined-subclass work in your case?
>>>>
>>>> gr. Martin
>>>>
>>>> Andre Pareis wrote:
>>>>> Hi Martin,
>>>>>
>>>>> finally I have reduced the problem to a small test case. You should
>>>>> be able to reconstruct the problem by executing the
>>>>> com.pareis.trading.tests.ClientTest in the test plugin. It uses an
>>>>> included hsqldb which creates its DB files under C:/Temp/options.
>>>>> The model project has a dependency on an "org.hibernate" plugin
>>>>> containing the hibernate libs but I'm sure you have something
>>>>> similar to replace that with. The model is in the
>>>>> model/options.ecore file but everything is generated. I'm on EMF
>>>>> 2.2.1 stable.
>>>>>
>>>>> One more hint: As you can see in the model there are associations
>>>>> between classes of different packages. This might also be a source
>>>>> of the error.
>>>>>
>>>>> I really hope we can get this fixed otherwise I would have to use
>>>>> non-appropriate one-to-many associations...
>>>>>
>>>>> Regards
>>>>> Andre
>>>>>
>>>>>
>>>>>
>>>>> Martin Taal wrote:
>>>>>> Hi,
>>>>>> Strange. Which ereference is set?
>>>>>> How does the database look like (tables and records in the table)?
>>>>>> Do you see anything wrong there?
>>>>>>
>>>>>> Can you send me the ecore and a testcase to reproduce this?
>>>>>>
>>>>>> gr. Martin
>>>>>>
>>>>>> Andre Pareis wrote:
>>>>>>> Here is the stack trace when I run into the code:
>>>>>>>
>>>>>>> 2034641 [main] ERROR
>>>>>>> org.eclipse.emf.teneo.hibernate.HbStoreException - Exception
>>>>>>> when saving resource trading
>>>>>>> java.lang.ClassCastException: com.pareis.trading.yahoo.Yahoo
>>>>>>> at com.pareis.trading.yahoo.Yahoo.eInverseAdd(Yahoo.java:404)
>>>>>>> at
>>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eInverseAdd(Basi cEObjectImpl.java:985)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.teneo.hibernate.mapping.property.EReferenceP ropertyHandler.set(EReferencePropertyHandler.java:124)
>>>>>>>
>>>>>>> at
>>>>>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropert yValues(AbstractEntityTuplizer.java:337)
>>>>>>>
>>>>>>> at
>>>>>>> org.hibernate.persister.entity.AbstractEntityPersister.setPr opertyValues(AbstractEntityPersister.java:3499)
>>>>>>>
>>>>>>> at
>>>>>>> org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseL oad.java:129)
>>>>>>>
>>>>>>> at
>>>>>>> org.hibernate.loader.Loader.initializeEntitiesAndCollections (Loader.java:842)
>>>>>>>
>>>>>>> at org.hibernate.loader.Loader.doQuery(Loader.java:717)
>>>>>>> at
>>>>>>> org.hibernate.loader.Loader.doQueryAndInitializeNonLazyColle ctions(Loader.java:224)
>>>>>>>
>>>>>>> at org.hibernate.loader.Loader.doList(Loader.java:2144)
>>>>>>> at
>>>>>>> org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java :2028)
>>>>>>> at org.hibernate.loader.Loader.list(Loader.java:2023)
>>>>>>> at
>>>>>>> org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:3 93)
>>>>>>> at
>>>>>>> org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslat orImpl.java:338)
>>>>>>>
>>>>>>> at
>>>>>>> org.hibernate.engine.query.HQLQueryPlan.performList(HQLQuery Plan.java:172)
>>>>>>>
>>>>>>> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
>>>>>>> at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
>>>>>>> at
>>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadUsingTopClasses(HibernateResource.java:319)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadFromStore(HibernateResource.java:305)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.teneo.hibernate.resource.HibernateResource.l oadResource(HibernateResource.java:260)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.teneo.resource.StoreResource.load(StoreResou rce.java:236)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo ad(ResourceSetImpl.java:249)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLo adHelper(ResourceSetImpl.java:264)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResou rce(ResourceSetImpl.java:390)
>>>>>>>
>>>>>>> at
>>>>>>> com.pareis.trading.ui.TradingEditor.createModel(TradingEdito r.java:796)
>>>>>>>
>>>>>>> at
>>>>>>> com.pareis.trading.ui.TradingEditor.createPages(TradingEdito r.java:851)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(Mu ltiPageEditorPart.java:276)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorReference.createPartHelper(Edi torReference.java:596)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorReference.createPart(EditorRef erence.java:372)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPartReference.getPart(Workb enchPartReference.java:566)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:29 0)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.presentations.PresentablePart.setVis ible(PresentablePart.java:140)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.presentations.util.PresentablePartFo lder.select(PresentablePartFolder.java:268)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.presentations.util.LeftToRightTabOrd er.select(LeftToRightTabOrder.java:65)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.presentations.util.TabbedStackPresen tation.selectPart(TabbedStackPresentation.java:394)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.PartStack.refreshPresentationSelecti on(PartStack.java:1144)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.PartStack.setSelection(PartStack.jav a:1097)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.PartStack.showPart(PartStack.java:13 11)
>>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:455)
>>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:102 )
>>>>>>> at org.eclipse.ui.internal.PartStack.add(PartStack.java:441)
>>>>>>> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:111 )
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorSashContainer.addEditor(Editor SashContainer.java:60)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorA reaHelper.java:217)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAre aHelper.java:207)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorManager.createEditorTab(Editor Manager.java:820)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorManager.openEditorFromDescript or(EditorManager.java:719)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.EditorManager.openEditor(EditorManag er.java:680)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched( WorkbenchPage.java:2593)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(Workben chPage.java:2528)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPag e.java:2520)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.ja va:2505)
>>>>>>> at
>>>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2500)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPa ge.java:2477)
>>>>>>>
>>>>>>> at
>>>>>>> com.pareis.trading.ui.TradingEditorAdvisor.openEditor(Tradin gEditorAdvisor.java:440)
>>>>>>>
>>>>>>> at
>>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$WindowAdvisor.pos tWindowOpen(TradingEditorAdvisor.java:177)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(Wor kbenchWindow.java:1128)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow .java:685)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.openWindowsAfterRestore(Wo rkbench.java:2886)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1686)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1 650)
>>>>>>> at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1529 )
>>>>>>> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.restoreState(Workbench.jav a:1473)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(Wor kbenchConfigurer.java:183)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.application.WorkbenchAdvisor.openWindows(Work benchAdvisor.java:702)
>>>>>>>
>>>>>>> at org.eclipse.ui.internal.Workbench.init(Workbench.java:1085)
>>>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1847)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:419)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>>>> at
>>>>>>> com.pareis.trading.ui.TradingEditorAdvisor$Application.run(T radingEditorAdvisor.java:97)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
>>>>>>>
>>>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>>>> at
>>>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>>>
>>>>>>> at
>>>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>>>
>>>>>>> at java.lang.reflect.Method.invoke(Method.java:585)
>>>>>>> at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
>>>>>>> at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
>>>>>>> at org.eclipse.core.launcher.Main.run(Main.java:977)
>>>>>>> at org.eclipse.core.launcher.Main.main(Main.java:952)
>>>>>>>
>>>>>>> Andre Pareis wrote:
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> I'm having a problem reading back a previously successful stored
>>>>>>>> one-to-one association. During load, a ClassCastException is
>>>>>>>> thrown. I have attached two files, one with the model and the
>>>>>>>> other one with a snapshot of the debugger showing the line which
>>>>>>>> when executed produces a ClassCastException somewhere in the
>>>>>>>> model code. That is, because the eInverseAdd is invoked with the
>>>>>>>> wrong object.
>>>>>>>>
>>>>>>>> The debugger shows that target and value are the same object.
>>>>>>>> The eReference value is strange, because there is actually no
>>>>>>>> corresponding object for this association to be found in the DB.
>>>>>>>>
>>>>>>>> The only objects that are in the DB are the parent of the Yahoo
>>>>>>>> object and the Yahoo object itself. The load of the parent and
>>>>>>>> the Yahoo objects have been passed successfully. Normally, the
>>>>>>>> load should have stopped already as there are no more objects to
>>>>>>>> read - instead, it ends up as shown on the debugger screen.
>>>>>>>>
>>>>>>>> Any ideas?
>>>>>>>>
>>>>>>>> Thanks
>>>>>>>> Andre
>>>>>>>>
>>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> ------------------------------------------------------------ ------------
>>>>>>>>
>>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>
>>
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
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