Description Michael Keith 2011-08-12 17:32:57 EDT

Customer was using Gemini JPA with OSGi and encountered the logged exception below.

The java.lang.Integer class is not able to be found because the temp class loader is being used at metadata processing time, and in OSGi the temp loader is not being initialized to a useful loader (since it is not supposed to be needed anymore).  The method that does a Java classload is DirectCollectionAccessor.processDirectMapMapping(), which calls into ORMetadata.getJavaClass() and tries to load the class using the temp loader.

Guy suggested that perhaps a better fix would be to short circuit the  ORMetadata.getPrimitiveClassForName() method called by ORMetadata.getJavaClass(), and that that does not return the class because the upgrade to the new ASM version in 2.3.0 now returns a fully qualified class String instead of the unqualified name. If this is true then things will work as long as the class to be loaded is always a primitive, but the problem will still exist if the target class is a non-primitive.

Log: 

...

[EL Finest]: 2011-08-12 11:31:23.609--ServerSession(1508249638)--Thread(Thread[Refresh Packages,5,main])--Begin predeploying Persistence Unit Proteus; session Proteus; state Initial; factoryCount 0
[EL Finest]: 2011-08-12 11:31:23.635--ServerSession(1508249638)--Thread(Thread[Refresh Packages,5,main])--property=eclipselink.orm.throw.exceptions; default value=true
...


[EL Config]: 2011-08-12 11:31:27.033--ServerSession(1508249638)--Thread(Thread[Refresh Packages,5,main])--The value column name for the basic collection/map mapping element mapping element [attributes] is being defaulted to: ATTRIBUTES.
[EL Config]: 2011-08-12 11:31:27.038--ServerSession(1508249638)--Thread(Thread[Refresh Packages,5,main])--metadata_default_collection_table_schema (There is no English translation for this message.)
[EL Config]: 2011-08-12 11:31:27.038--ServerSession(1508249638)--Thread(Thread[Refresh Packages,5,main])--The primary key column name for the mapping element [field coverageMap] is being defaulted to: OID.
[EL Finest]: 2011-08-12 11:31:27.049--ServerSession(1508249638)--Thread(Thread[Refresh Packages,5,main])--End predeploying Persistence Unit Proteus; session Proteus; state PredeployFailed; factoryCount 0

!ENTRY org.eclipse.osgi 4 0 2011-08-12 11:31:27.053
!MESSAGE An unexpected runtime error has occurred.
!STACK 0
javax.persistence.PersistenceException: Exception [EclipseLink-28018] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Predeployment of PersistenceUnit [Proteus] failed.
Internal Exception: Exception [EclipseLink-7156] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.ValidationException
Exception Description: Unable to find the class named [java.lang.Integer]. Ensure the class name/path is correct and available to the classloader.
Internal Exception: java.lang.ClassNotFoundException: java/lang/Integer
	at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:1385)
	at org.eclipse.persistence.internal.jpa.deployment.JPAInitializer.callPredeploy(JPAInitializer.java:98)
	at org.eclipse.persistence.internal.jpa.deployment.JPAInitializer.initPersistenceUnits(JPAInitializer.java:306)
	at org.eclipse.gemini.jpa.provider.GeminiOSGiInitializer.initializeFromBundle(GeminiOSGiInitializer.java:119)
	at org.eclipse.gemini.jpa.provider.EclipseLinkOSGiProvider.assignPersistenceUnitsInBundle(EclipseLinkOSGiProvider.java:191)
	at org.eclipse.gemini.jpa.PersistenceBundleExtender.tryAssigningPersistenceUnitsInBundle(PersistenceBundleExtender.java:172)
	at org.eclipse.gemini.jpa.PersistenceBundleExtender.bundleChanged(PersistenceBundleExtender.java:314)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:847)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
	at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEventPrivileged(Framework.java:1522)
	at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1458)
	at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1453)
	at org.eclipse.osgi.framework.internal.core.PackageAdminImpl.processDelta(PackageAdminImpl.java:485)
	at org.eclipse.osgi.framework.internal.core.PackageAdminImpl.doResolveBundles(PackageAdminImpl.java:251)
	at org.eclipse.osgi.framework.internal.core.PackageAdminImpl$1.run(PackageAdminImpl.java:173)
	at java.lang.Thread.run(Thread.java:680)
Caused by: Exception [EclipseLink-28018] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Predeployment of PersistenceUnit [Proteus] failed.
Internal Exception: Exception [EclipseLink-7156] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.ValidationException
Exception Description: Unable to find the class named [java.lang.Integer]. Ensure the class name/path is correct and available to the classloader.
Internal Exception: java.lang.ClassNotFoundException: java/lang/Integer
	at org.eclipse.persistence.exceptions.EntityManagerSetupException.predeployFailed(EntityManagerSetupException.java:221)
	... 17 more
Caused by: Exception [EclipseLink-7156] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.ValidationException
Exception Description: Unable to find the class named [java.lang.Integer]. Ensure the class name/path is correct and available to the classloader.
Internal Exception: java.lang.ClassNotFoundException: java/lang/Integer
	at org.eclipse.persistence.exceptions.ValidationException.unableToLoadClass(ValidationException.java:1949)
	at org.eclipse.persistence.internal.jpa.metadata.MetadataHelper.getClassForName(MetadataHelper.java:111)
	at org.eclipse.persistence.internal.jpa.metadata.ORMetadata.getJavaClass(ORMetadata.java:273)
	at org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.DirectCollectionAccessor.processDirectMapMapping(DirectCollectionAccessor.java:446)
	at org.eclipse.persistence.internal.jpa.metadata.accessors.mappings.ElementCollectionAccessor.process(ElementCollectionAccessor.java:737)
	at org.eclipse.persistence.internal.jpa.metadata.MetadataProject.processDirectCollectionAccessors(MetadataProject.java:1388)
	at org.eclipse.persistence.internal.jpa.metadata.MetadataProject.processStage3(MetadataProject.java:1659)
	at org.eclipse.persistence.internal.jpa.metadata.MetadataProcessor.processORMMetadata(MetadataProcessor.java:521)
	at org.eclipse.persistence.internal.jpa.deployment.PersistenceUnitProcessor.processORMetadata(PersistenceUnitProcessor.java:526)
	at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:1320)
	... 16 more
Caused by: java.lang.ClassNotFoundException: java/lang/Integer
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:247)
	at org.eclipse.persistence.internal.security.PrivilegedAccessHelper.getClassForName(PrivilegedAccessHelper.java:119)
	at org.eclipse.persistence.internal.jpa.metadata.MetadataHelper.getClassForName(MetadataHelper.java:97)
	... 24 more