Re: EclipseLink in Glassfish, roundup

Gordon,

> Not sure if you noticed the subsequent announcement...

I noticed -- thanks! That was very quick.

Unfortunately, M4 still throws Exceptions on deployment, NPE this  
time. The stack trace is attached.

On the LAZY relationship issue: This is a hard one. I spent two days  
trying to isolate the problem, and didn't succeed. Here are some of my  
findings:

- Not all LAZY relationships show up empty

- I tracked down the problem in one case to a single line in my code:  
Just before accessing the list, I retrieve a sibling of the list  
(referenced by the same entity, otherwise unrelated) from the  
persistence context. If I /hold/ the reference, the list comes out  
empty. If I retrieve the entity without holding a pointer to the other  
entity, the list shows up OK. I couldn't believe this when I  
encountered it friday night, but it was reproducible monday morning...

- Even more disturbing: The error occurs in a JUnit test where a  
transaction runs for a rather long time and covers the creation and  
removal of a lot of entities. If I create 100 entities before  
accessing the LAZY list, the problem is there, the test fails. If I  
create 10, the list is OK, all's well. The very same code -- the only  
difference is the number of entities involved.

- Well then, I thought. Whatever this is, it must be some caching  
issue. So I set "eclipselink.cache.type.default" to "NONE" and tried  
again -- and got a StackOverflowError when em.find()ing one of the  
entities. Scary. I switched back to Essentials and disabled caching  
for control -- and there it was, the same stack overflow, with none of  
my classes involved: At least, both of them down consistently,  
Essentials and EclipseLink.

Of course, I can't be sure I hit the same problem twice with and  
without the caching, but anyway: I think I should go after the  
StackOverflow before trying anything else. Is there any sort of  
mapping known to cause StackOverflow errors at runtime when caching is  
disabled?

Thanks a lot & greetings from Berlin,

rv

---

[#|2008-02-11T15:08:37.507+0100|WARNING|sun-appserver9.1|
javax.enterprise.system.core.classloading|
_ThreadID=32;_ThreadName=Thread-104;_RequestID=601205a5-
eae6-4e9b-9508-66ee33fe157e;|Exception [EclipseLink-28018] (Eclipse  
Persistence Services - 1.0 (Build SNAPSHOT - 20080207)):  
org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Predeployment of PersistenceUnit  
[ormpersistence] failed.
Internal Exception: java.lang.NullPointerException
javax.persistence.PersistenceException: Exception [EclipseLink-28018]  
(Eclipse Persistence Services - 1.0 (Build SNAPSHOT - 20080207)):  
org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Predeployment of PersistenceUnit  
[ormpersistence] failed.
Internal Exception: java.lang.NullPointerException
        at  
org
.eclipse
.persistence
.internal
.jpa.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:806)
        at  
org
.eclipse
.persistence
.jpa
.PersistenceProvider
.createContainerEntityManagerFactory(PersistenceProvider.java:155)
        at  
com
.sun
.enterprise
.server.PersistenceUnitLoaderImpl.load(PersistenceUnitLoaderImpl.java:
149)
        at  
com
.sun
.enterprise
.server.PersistenceUnitLoaderImpl.load(PersistenceUnitLoaderImpl.java:
84)
        at  
com
.sun
.enterprise
.server.AbstractLoader.loadPersistenceUnits(AbstractLoader.java:898)
        at  
com
.sun.enterprise.server.ApplicationLoader.doLoad(ApplicationLoader.java:
184)
        at  
com
.sun
.enterprise
.server.TomcatApplicationLoader.doLoad(TomcatApplicationLoader.java:126)
        at com.sun.enterprise.server.AbstractLoader.load(AbstractLoader.java:
244)
        at  
com
.sun
.enterprise
.server.ApplicationManager.applicationDeployed(ApplicationManager.java:
336)
        at  
com
.sun
.enterprise
.server.ApplicationManager.applicationDeployed(ApplicationManager.java:
210)
        at  
com
.sun
.enterprise
.server.ApplicationManager.applicationDeployed(ApplicationManager.java:
645)
        at  
com
.sun
.enterprise
.admin
.event
.AdminEventMulticaster
.invokeApplicationDeployEventListener(AdminEventMulticaster.java:928)
        at  
com
.sun
.enterprise
.admin
.event
.AdminEventMulticaster
.handleApplicationDeployEvent(AdminEventMulticaster.java:912)
        at  
com
.sun
.enterprise
.admin
.event.AdminEventMulticaster.processEvent(AdminEventMulticaster.java:
461)
        at  
com
.sun
.enterprise
.admin
.event.AdminEventMulticaster.multicastEvent(AdminEventMulticaster.java:
176)
        at  
com
.sun
.enterprise
.admin
.server
.core
.DeploymentNotificationHelper
.multicastEvent(DeploymentNotificationHelper.java:308)
        at  
com
.sun
.enterprise
.deployment
.phasing
.DeploymentServiceUtils.multicastEvent(DeploymentServiceUtils.java:226)
        at  
com
.sun
.enterprise
.deployment
.phasing
.ServerDeploymentTarget.sendStartEvent(ServerDeploymentTarget.java:298)
        at  
com
.sun
.enterprise
.deployment
.phasing.ApplicationStartPhase.runPhase(ApplicationStartPhase.java:132)
        at  
com
.sun
.enterprise
.deployment.phasing.DeploymentPhase.executePhase(DeploymentPhase.java:
108)
        at  
com
.sun
.enterprise
.deployment
.phasing.PEDeploymentService.executePhases(PEDeploymentService.java:919)
        at  
com
.sun
.enterprise
.deployment.phasing.PEDeploymentService.start(PEDeploymentService.java:
591)
        at  
com
.sun
.enterprise
.deployment.phasing.PEDeploymentService.start(PEDeploymentService.java:
635)
        at  
com
.sun
.enterprise
.admin
.mbeans.ApplicationsConfigMBean.start(ApplicationsConfigMBean.java:744)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at  
sun
.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
        at  
sun
.reflect
.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at  
com
.sun
.enterprise.admin.MBeanHelper.invokeOperationInBean(MBeanHelper.java:
375)
        at  
com
.sun
.enterprise.admin.MBeanHelper.invokeOperationInBean(MBeanHelper.java:
358)
        at  
com
.sun
.enterprise.admin.config.BaseConfigMBean.invoke(BaseConfigMBean.java:
464)
        at  
com
.sun
.jmx.mbeanserver.DynamicMetaDataImpl.invoke(DynamicMetaDataImpl.java:
213)
        at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(MetaDataImpl.java:220)
        at  
com
.sun
.jmx
.interceptor
.DefaultMBeanServerInterceptor
.invoke(DefaultMBeanServerInterceptor.java:815)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:
784)
        at sun.reflect.GeneratedMethodAccessor15.invoke(Unknown Source)
        at  
sun
.reflect
.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at  
com.sun.enterprise.admin.util.proxy.ProxyClass.invoke(ProxyClass.java:
90)
        at $Proxy1.invoke(Unknown Source)
        at  
com
.sun
.enterprise
.admin.server.core.jmx.SunoneInterceptor.invoke(SunoneInterceptor.java:
304)
        at  
com
.sun
.enterprise
.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:174)
        at  
com
.sun
.enterprise
.deployment
.client
.DeploymentClientUtils.startApplication(DeploymentClientUtils.java:145)
        at  
com
.sun.enterprise.deployment.client.DeployAction.run(DeployAction.java:
537)
        at java.lang.Thread.run(Thread.java:613)
Caused by: Exception [EclipseLink-28018] (Eclipse Persistence Services  
- 1.0 (Build SNAPSHOT - 20080207)):  
org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Predeployment of PersistenceUnit  
[ormpersistence] failed.
Internal Exception: java.lang.NullPointerException
        at  
org
.eclipse
.persistence
.exceptions
.EntityManagerSetupException
.predeployFailed(EntityManagerSetupException.java:203)
        ... 45 more
Caused by: java.lang.NullPointerException
        at  
org
.eclipse
.persistence
.internal
.jpa.metadata.accessors.OneToOneAccessor.process(OneToOneAccessor.java:
76)
        at  
org
.eclipse
.persistence
.internal
.jpa
.metadata
.accessors
.RelationshipAccessor.processRelationship(RelationshipAccessor.java:315)
        at  
org
.eclipse
.persistence
.internal
.jpa
.metadata
.MetadataProject
.processAccessorsWithRelationships(MetadataProject.java:559)
        at  
org
.eclipse
.persistence
.internal.jpa.metadata.MetadataProject.process(MetadataProject.java:549)
        at  
org
.eclipse
.persistence
.internal
.jpa
.metadata.MetadataProcessor.processAnnotations(MetadataProcessor.java:
247)
        at  
org
.eclipse
.persistence
.internal
.jpa
.deployment
.PersistenceUnitProcessor
.processORMetadata(PersistenceUnitProcessor.java:263)
        at  
org
.eclipse
.persistence
.internal
.jpa.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:763)
        ... 44 more
|#]

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