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https://issues.apache.org/jira/browse/OPENJPA-1491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12878609#action_12878609
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Jean-Philippe CLEMENT commented on OPENJPA-1491:
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Well, I'm not too sure. I'm using Felix Karaf which does not come with JPA. I'm
using OpenJPA to provide both API and implementation of JPA.
To be clear on the top of Karaf, I'm putting those bundles:
+ OpenJPA Aggregate Jar (2.0.0)
+ Apache Geronimo JSR-317 JPA 2.0 Spec API (1.0)
+ Commons Collections (3.2.1)
+ Commons Lang (2.5)
+ Commons Pool (1.5.3)
> 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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