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https://issues.apache.org/jira/browse/OPENJPA-1491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12903432#action_12903432
]
Donald Woods commented on OPENJPA-1491:
---------------------------------------
You need Aries JPA + OpenJPA to support JPA on Felix -
http://incubator.apache.org/aries/
> org.apache.openjpa.kernel.Bootstrap uses the application classloader to load
> OpenJPA internals
> ----------------------------------------------------------------------------------------------
>
> Key: OPENJPA-1491
> URL: https://issues.apache.org/jira/browse/OPENJPA-1491
> Project: OpenJPA
> Issue Type: Bug
> Components: osgi
> Affects Versions: 2.0.0-beta
> Environment: OSGi
> Reporter: Timothy Ward
> Assignee: Donald Woods
> Fix For: 2.0.0-beta3
>
> Attachments: OPENJPA-1491-trunk.patch
>
>
> When attempting to create an EntityManagerFactory in an OSGi environment the
> org.apache.openjpa.kernel.Bootstrap class attempts to instantiate a
> BrokerFactory using reflection. When the Bootstrap class attempts to load
> this class it only ever uses the ClassLoader passed in by the
> PersistenceUnitInfo. This means that the default broker (contained within
> OpenJPA) can never be loaded. The client bundle should not have to import the
> internals of OpenJPA to make this work, so OpenJPA should attempt to load the
> class using its own bundle classloader. This is the expected behaviour for an
> OSGi bundle.
> Additionally, the implementation uses Class.forName() which should be used
> carefully in an OSGi envrionment (to see why read
> http://blog.bjhargrave.com/2007/09/classforname-caches-defined-class-in.html
> ). It should be fine here because the variant that takes a ClassLoader is
> used.
> The following exception is generated when OpenJPA attempts to use the
> application classloader to load an internal class.
> <openjpa-2.0.0-SNAPSHOT-r422266:905001 fatal user error>
> org.apache.openjpa.persistence.ArgumentException: Could not invoke the static
> newInstance method on the named factory class
> "<<openjpa-2.0.0-SNAPSHOT-r422266:905001 fatal user error>
> org.apache.openjpa.util.UserException: The named BrokerFactory
> "org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory" is not valid.>".
> at
> org.apache.openjpa.kernel.Bootstrap.newBrokerFactory(Bootstrap.java:70)
> at
> org.apache.openjpa.persistence.PersistenceProviderImpl.getBrokerFactory(PersistenceProviderImpl.java:145)
> at
> org.apache.openjpa.persistence.PersistenceProviderImpl.createContainerEntityManagerFactory(PersistenceProviderImpl.java:180)
> at
> org.apache.openjpa.persistence.PersistenceProviderImpl.createContainerEntityManagerFactory(PersistenceProviderImpl.java:62)
> at
> org.apache.aries.jpa.container.impl.EntityManagerFactoryManager.createEntityManagerFactories(EntityManagerFactoryManager.java:227)
> at
> org.apache.aries.jpa.container.impl.EntityManagerFactoryManager.bundleStateChange(EntityManagerFactoryManager.java:121)
> at
> org.apache.aries.jpa.container.impl.PersistenceBundleManager.modifiedBundle(PersistenceBundleManager.java:197)
> at
> org.apache.aries.util.tracker.MultiBundleTracker$InternalBundleTracker.modifiedBundle(MultiBundleTracker.java:108)
> at
> org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:453)
> at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:237)
> at
> org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:413)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:916)
> at
> org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:220)
> at
> org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:149)
> at
> org.eclipse.osgi.framework.internal.core.Framework.publishBundleEventPrivileged(Framework.java:1350)
> at
> org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1301)
> at
> org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:490)
> at
> org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:546)
> at
> org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1098)
> at
> org.eclipse.osgi.framework.internal.core.PackageAdminImpl.suspendBundle(PackageAdminImpl.java:314)
> at
> org.eclipse.osgi.framework.internal.core.PackageAdminImpl.processDelta(PackageAdminImpl.java:460)
> at
> org.eclipse.osgi.framework.internal.core.PackageAdminImpl.doResolveBundles(PackageAdminImpl.java:241)
> at
> org.eclipse.osgi.framework.internal.core.PackageAdminImpl$1.run(PackageAdminImpl.java:176)
> at java.lang.Thread.run(Thread.java:735)
> Caused by: <openjpa-2.0.0-SNAPSHOT-r422266:905001 fatal user error>
> org.apache.openjpa.persistence.ArgumentException: The named BrokerFactory
> "org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory" is not valid.
> at
> org.apache.openjpa.kernel.Bootstrap.getFactoryClass(Bootstrap.java:159)
> at org.apache.openjpa.kernel.Bootstrap.invokeFactory(Bootstrap.java:111)
> at
> org.apache.openjpa.kernel.Bootstrap.newBrokerFactory(Bootstrap.java:62)
> ... 23 more
> Caused by: java.lang.ClassNotFoundException:
> org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory
> at java.lang.Class.forName(Class.java:169)
> at
> org.apache.openjpa.kernel.Bootstrap.getFactoryClass(Bootstrap.java:157)
> ... 25 more
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