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RE: [eclipselink-users] EclipseLink in Glassfish, roundup
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Hello,
Thanks for sticking with it. There was a major JPA xml processing migration in this milestone. The problem you are seeing now is with defaults for OneToOne mappings. Although defaulting OneToOne mappings is not supported by the JPA specification EclipseLink can default them given enough information. It seems there is a problem with the annotation processing code that enables that defaulting. ( https://bugs.eclipse.org/bugs/show_bug.cgi?id=218517 )
The StackOverFlow is not a problem with your model. A cache type of NONE should only be used when you have no references to the objects that have a cache type of NONE (a very special case) otherwise StackOverFlows can occur. A cache type of NONE is an special case configuration. If you wish to disable caching you can set toplink.cache.shared.(default|<class>) = false as a persistence unit property. And yes this is confusing we will be working to make cache settings more intuitive.
If possible can you provide the code you are executing in the Lazy loading case?
--Gordon
-----Original Message-----
From: eclipselink-users-bounces@xxxxxxxxxxx
[mailto:eclipselink-users-bounces@xxxxxxxxxxx]On Behalf Of
wintermute@xxxxxxxxxxxxxxxxxx
Sent: Monday, February 11, 2008 9:09 AM
To: EclipseLink User Discussions
Subject: Re: [eclipselink-users] 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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