Re: [eclipselink-users] Map-related Exception in M5

[Tom Ware <tom.ware@xxxxxxxxxx>]

Hi rv,

  Does adding an em.persist(data) some time before your flush help?

-Tom

wintermute@xxxxxxxxxxxxxxxxxx wrote:
> Tom,
>
> yes, this is a container-managed transaction committing, Glassfish 
> against MySQL.
>
> Here's a snippet from the SLSB managing the entities:
>
> -----
>
> WidgetData data;
> if(id > 0) {
>     data = em.find(WidgetData.class, id);
> } else {
>     data = new WidgetData();
>     data.setApplicationInstance(applicationInstance);
>     if(partKey != null && partKey.length() > 0) {
>         applicationInstance.getParts().put(partKey, data);
>         data.setPartKey(partKey);               
>     }
>            
>     // flush to update the ID
>     em.flush();
> }
>        
> data.setModificationTime(new Date());
> data.setTitle(title);
> data.setContent(content);
>        
> return data;
>
> ----
>
> id is -1 in the test case in question, partKey is a String != null.
> So there's a new WidgetData entity being added.
>
> Snippet from the "WidgetApplicationInstance" entity:
>
> ----
>
> @Id
> @SequenceGenerator(name="WIDGETAPPLICATIONINSTANCE_SEQUENCE_GENERATOR")
> @GeneratedValue(strategy=GenerationType.SEQUENCE, 
> generator="WIDGETAPPLICATIONINSTANCE_SEQUENCE_GENERATOR")
> private long ID;
>     
> private int instanceNumber;
>     
> @ManyToOne
> private WidgetApplication application;
>     
> @ManyToOne
> private User owner;
>
> @OneToMany(mappedBy="applicationInstance", cascade=CascadeType.ALL, 
> fetch=FetchType.EAGER)
> @MapKey(name="partKey")
> private Map<String, WidgetData> parts = new HashMap<String, WidgetData>();
>
> @javax.persistence.Version
> protected int optimisticLockVersion;
>
>
> ----
>
>
> Thanks for looking into this,
>
> rv
>
>
>
>
> Am 20.03.2008 um 22:59 schrieb Tom Ware:
>
> > Hi,
> >
> >  Can you give us an idea of what you are doing?  It looks like a 
> > transaction is committing.  What Entities are involved in the 
> > transaction?  How are they mapped?  What change are you making?
> >
> > Thanks,
> > Tom
> >
> > wintermute@xxxxxxxxxxxxxxxxxx wrote:
> > > Hi list,
> > > I just deployed my application with EclipseLink M5, without any 
> > > trouble this time. For the most part, things look pretty good.
> > > One of my entities, however, doesn't like to have it's map changed. 
> > > The code works in TL Essentials.
> > > Has this been reported? Can I do anything to avoid the issue? (Stack 
> > > trace attached.)
> > > Thanks,
> > > rv
> > > [#|2008-03-20T13:24:15.390+0100|WARNING|sun-appserver9.1|org.eclipse.persistence.session.file:/usr/local/server/glassfish/domains/domain1/applications/j2ee-apps/com.bookpac.server/pu.jar-ormpersistence.transaction|_ThreadID=48;_ThreadName=TestThread-c257e1ca1761a0f247942e3fddad;_RequestID=93b4959c-21f5-4938-a42b-0b53fa7f10bc;| 
> > > java.lang.NullPointerException
> > >        at 
> > > org.eclipse.persistence.internal.queries.MapContainerPolicy.compareKeys(MapContainerPolicy.java:147)         
> > > at 
> > > org.eclipse.persistence.internal.queries.ContainerPolicy.compareCollectionsForChange(ContainerPolicy.java:259)         
> > > at 
> > > org.eclipse.persistence.mappings.CollectionMapping.compareCollectionsForChange(CollectionMapping.java:323)         
> > > at 
> > > org.eclipse.persistence.mappings.CollectionMapping.compareForChange(CollectionMapping.java:363)         
> > > at 
> > > org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.createObjectChangeSetThroughComparison(DeferredChangeDetectionPolicy.java:135)         
> > > at 
> > > org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.createObjectChangeSet(DeferredChangeDetectionPolicy.java:114)         
> > > at 
> > > org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.calculateChanges(DeferredChangeDetectionPolicy.java:80)         
> > > at 
> > > org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.calculateChanges(UnitOfWorkImpl.java:523)         
> > > at 
> > > org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabaseWithChangeSet(UnitOfWorkImpl.java:1320)         
> > > at 
> > > org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.issueSQLbeforeCompletion(UnitOfWorkImpl.java:2862)         
> > > at 
> > > org.eclipse.persistence.internal.jpa.RepeatableWriteUnitOfWork.issueSQLbeforeCompletion(RepeatableWriteUnitOfWork.java:209)         
> > > at 
> > > org.eclipse.persistence.transaction.AbstractSynchronizationListener.beforeCompletion(AbstractSynchronizationListener.java:157)         
> > > at 
> > > org.eclipse.persistence.transaction.JTASynchronizationListener.beforeCompletion(JTASynchronizationListener.java:68)         
> > > at 
> > > com.sun.enterprise.distributedtx.J2EETransaction.commit(J2EETransaction.java:419)         
> > > at 
> > > com.sun.enterprise.distributedtx.J2EETransactionManagerOpt.commit(J2EETransactionManagerOpt.java:371)         
> > > at 
> > > com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:3792) 
> > >
> > >        at 
> > > com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:3571) 
> > >
> > >        at 
> > > com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1354)
> > >        at 
> > > com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1316)
> > >        at 
> > > com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:210)         
> > > at 
> > > com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate.invoke(EJBObjectInvocationHandlerDelegate.java:77)         
> > > at $Proxy306.setPerInstanceUserData(Unknown Source)
> > > [...]
> > > _______________________________________________
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