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

[wintermute@xxxxxxxxxxxxxxxxxx]

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.compareKe 
> > ys(MapContainerPolicy.java:147)         at  
> > org.eclipse.persistence.internal.queries.ContainerPolicy.compareColle 
> > ctionsForChange(ContainerPolicy.java:259)         at  
> > org.eclipse.persistence.mappings.CollectionMapping.compareCollections 
> > ForChange(CollectionMapping.java:323)         at  
> > org.eclipse.persistence.mappings.CollectionMapping.compareForChange 
> > (CollectionMapping.java:363)         at  
> > org.eclipse.persistence.descriptors.changetracking.DeferredChangeDete 
> > ctionPolicy.createObjectChangeSetThroughComparison 
> > (DeferredChangeDetectionPolicy.java:135)         at  
> > org.eclipse.persistence.descriptors.changetracking.DeferredChangeDete 
> > ctionPolicy.createObjectChangeSet 
> > (DeferredChangeDetectionPolicy.java:114)         at  
> > org.eclipse.persistence.descriptors.changetracking.DeferredChangeDete 
> > ctionPolicy.calculateChanges(DeferredChangeDetectionPolicy.java: 
> > 80)         at  
> > org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.calculateCha 
> > nges(UnitOfWorkImpl.java:523)         at  
> > org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToData 
> > baseWithChangeSet(UnitOfWorkImpl.java:1320)         at  
> > org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.issueSQLbefo 
> > reCompletion(UnitOfWorkImpl.java:2862)         at  
> > org.eclipse.persistence.internal.jpa.RepeatableWriteUnitOfWork.issueS 
> > QLbeforeCompletion(RepeatableWriteUnitOfWork.java:209)         at  
> > org.eclipse.persistence.transaction.AbstractSynchronizationListener.b 
> > eforeCompletion(AbstractSynchronizationListener.java:157)          
> > at  
> > org.eclipse.persistence.transaction.JTASynchronizationListener.before 
> > Completion(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)
> > [...]
> > _______________________________________________
> > eclipselink-users mailing list
> > eclipselink-users@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/eclipselink-users
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