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https://issues.apache.org/jira/browse/ARIES-681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13059489#comment-13059489
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Balazs Zsoldos commented on ARIES-681:
--------------------------------------
Hi,
I will upload a sample application soon that will show my problem. I do not use
the OSGI capabilities of EclipseLink due to the following reason:
- I would like to use aries blueprint and jpa:context tag.
- I am afraid that if I use the standard Eclipselink solution (persistence.xml
into META-INF library) I will face many problems with transaction management
and aries blueprint
So my solution was that I defined the "Meta-Persistence" in the manifest
header. As EclipseLink does not register the PersistenceProvider as an OSGI
service (Aries needs it based on the OSGI 4.2 specification I think) I created
a jar file that does nothing else but the service registration.
I tried to register the osgi based PersistenceProvider of EclipseLink but I got
an exception that createContainerEntityManagerFactory function cannot be called
in an OSGI environment (Aries JPA container calls it). Due to this reason I
registered the ordinary PersistenceProvider of EclipseLink and that is where
this "bug" came from. Aries JPA container uses ordinary Eclipselink persistence
provider. Aries creates the Persistence Unit as well, Eclipselink does not do
anything automatically.
Regards,
Balazs
> JPA Container BundleDelegatingClassLoader should look for classes in the
> provider bundle, too
> ---------------------------------------------------------------------------------------------
>
> Key: ARIES-681
> URL: https://issues.apache.org/jira/browse/ARIES-681
> Project: Aries
> Issue Type: Bug
> Components: JPA
> Affects Versions: 0.3
> Environment: Glassfish 3.0 (EclipseLink 2.0.2), Glassfish 3.1
> (EclipseLink 2.2)
> Reporter: Balazs Zsoldos
> Attachments: classloadingFromMultipleProviderDuringQuery.0.3.patch
>
>
> Currently the BundleDelegatingClassLoader in JPA container only looks for
> classes in the bundle of the entitymanager. However the JPA implementation
> Eclipselink needs some classes from itself. The reason is that in entity
> classes the properties that hold mapping of One-To-Many are converted to
> EclipseLink list type. See the following exception stacktrace:
> Internal Exception: java.lang.ClassNotFoundException:
> org.eclipse.persistence.indirection.IndirectList
> at
> org.eclipse.persistence.exceptions.ValidationException.classNotFoundWhileConvertingClassNames(ValidationException.java:2317)
> at
> org.eclipse.persistence.internal.queries.InterfaceContainerPolicy.convertClassNamesToClasses(InterfaceContainerPolicy.java:123)
> at
> org.eclipse.persistence.mappings.CollectionMapping.convertClassNamesToClasses(CollectionMapping.java:788)
> at
> org.eclipse.persistence.descriptors.ClassDescriptor.convertClassNamesToClasses(ClassDescriptor.java:1458)
> at
> org.eclipse.persistence.sessions.Project.convertClassNamesToClasses(Project.java:362)
> at
> org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:322)
> ... 83 more
> Caused by: java.lang.ClassNotFoundException:
> org.eclipse.persistence.indirection.IndirectList
> at
> org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:744)
> at org.apache.felix.framework.ModuleImpl.access$100(ModuleImpl.java:61)
> at
> org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1656)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> at
> org.apache.felix.framework.ModuleImpl.getClassByDelegation(ModuleImpl.java:604)
> at org.apache.felix.framework.Felix.loadBundleClass(Felix.java:1487)
> at org.apache.felix.framework.BundleImpl.loadClass(BundleImpl.java:897)
> at
> org.apache.aries.jpa.container.unit.impl.BundleDelegatingClassLoader$1.run(BundleDelegatingClassLoader.java:50)
> at
> org.apache.aries.jpa.container.unit.impl.BundleDelegatingClassLoader$1.run(BundleDelegatingClassLoader.java:47)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> org.apache.aries.jpa.container.unit.impl.BundleDelegatingClassLoader.findClass(BundleDelegatingClassLoader.java:47)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> 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:88)
> at
> org.eclipse.persistence.internal.queries.InterfaceContainerPolicy.convertClassNamesToClasses(InterfaceContainerPolicy.java:120)
> ... 87 more
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