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From: Kevin Sutter <kwsutter@gmail.com>
Date: Wed, 7 Sep 2011 14:33:08 -0500
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Subject: Re: Auditor and OSGi
To: users@openjpa.apache.org
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Hi Bengt,
It sure sounds like you have narrowed down the problem.  I would suggest
opening a JIRA for this problem with the information you have provided and
then "push" for it to be worked on...  :-)

I'm also going to cross post to dev on the chance we could get some interest
in developing a fix for this...

Thanks,
Kevin

On Tue, Sep 6, 2011 at 2:43 PM, Bengt Rodehav <bengt@rodehav.com> wrote:

> Hello again,
>
> As I didn't get any replies on this post here on the OpenJPA forum I tried
> on the Aries list since I thought the problem might lie in Aries JPA
> container. I got the following reply from Timothy Ward:
>
> *"This sort of problem is usually caused by a JPA provider using the wrong
> > classloader to try and find your class. If you import the
> > se.digia.maia.common.auditlog.impl package into your persistence bundle
> > *and* OpenJPA uses the Persistence Unit classloader (rather than its own)
> to
> > load it then everything should work fine. Realistically they should try
> both
> > their classloader and the persistence unit classloader in case the config
> > property is for their own internals.
> > Unfortunately there is a limit to how much Aries can shield JPA providers
> > from OSGi classloading!"*
>
>
> Looking at the stack trace it seems clear that OpenJPA tries to load my
> Auditor implementation using its own class loader. Unless OpenJPA
> dynamically imports "*" this won't work. OpenJPA needs to use the class
> loader of the bundle containing the persistence.xml. In my case this will
> work since that bundle does import the package containing my Auditor
> implementation.
>
> Can someone on the OpenJPA team confirm this? Shalll I create a JIRA?
>
> /Bengt
>
>
> 2011/9/4 Bengt Rodehav <bengt@rodehav.com>
>
> > Hello everyone,
> >
> > After a long discussion about audit logging on this mailing list, Pinaki
> > developed an audit logging facility that he describes on:
> >
> >
> http://openjpa.208410.n2.nabble.com/OpenJPA-Audit-Facility-tc6722915.html
> >
> > It provides very interesting functionality and I've tried it in simple
> > JUnit scenarios using RESOURCE_LOCAL and it seems to work fine. However,
> my
> > production environment nowadays is OSGi using Karaf+Felix. I use Aries
> for
> > transaction support and also for it's JPA support. In that environment,
> > OpenJPA doesn't seem to be able to find my auditor implementation
> > (se.digia.maia.common.auditlog.impl.MaiaAuditor) that I specify in my
> > persistence.xml.
> >
> > Has anyone else tried OpenJPA's new audit log facility? How can I make
> > OpenJPA find classes specified in the persistence.xml? I have
> double-checked
> > that the se.digia.maia.common.auditlog.impl is exported from my
> implementing
> > bundle.
> >
> > I get the following exception:
> >
> > *ERROR: Bundle org.apache.aries.jpa.container [21] EventDispatcher: Error
> >> during dispatch. (<openjpa-2.2.0-SNAPSHOT-runknown fatal user error>
> >> org.apache.openjpa.persistence.ArgumentException: Could not invoke the
> >> static newInstance method on the named factory class
> >> "org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory".)
> >> <openjpa-2.2.0-SNAPSHOT-runknown fatal user error>
> >> org.apache.openjpa.persistence.ArgumentException: Could not invoke the
> >> static newInstance method on the named factory class
> >> "org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory".
> >>  at
> >> org.apache.openjpa.kernel.Bootstrap.newBrokerFactory(Bootstrap.java:76)
> >> at
> >>
> org.apache.openjpa.persistence.PersistenceProviderImpl.getBrokerFactory(PersistenceProviderImpl.java:147)
> >>  at
> >>
> org.apache.openjpa.persistence.PersistenceProviderImpl.createContainerEntityManagerFactory(PersistenceProviderImpl.java:185)
> >> at
> >>
> org.apache.openjpa.persistence.PersistenceProviderImpl.createContainerEntityManagerFactory(PersistenceProviderImpl.java:62)
> >>  at
> >>
> org.apache.aries.jpa.container.impl.EntityManagerFactoryManager.createEntityManagerFactories(EntityManagerFactoryManager.java:263)
> >> at
> >>
> org.apache.aries.jpa.container.impl.EntityManagerFactoryManager.bundleStateChange(EntityManagerFactoryManager.java:153)
> >>  at
> >>
> org.apache.aries.jpa.container.impl.PersistenceBundleManager.modifiedBundle(PersistenceBundleManager.java:283)
> >> 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.apache.felix.framework.util.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:807)
> >> at
> >>
> org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:729)
> >>  at
> >>
> org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:610)
> >> at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:3879)
> >>  at org.apache.felix.framework.Felix.access$800(Felix.java:79)
> >> at
> >>
> org.apache.felix.framework.Felix$StatefulResolver.fireResolvedEvents(Felix.java:4491)
> >>  at
> >>
> org.apache.felix.framework.Felix$StatefulResolver.resolve(Felix.java:4162)
> >> at org.apache.felix.framework.Felix.resolveBundle(Felix.java:3557)
> >>  at org.apache.felix.framework.Felix.startBundle(Felix.java:1797)
> >> at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1192)
> >>  at
> >> org.apache.felix.framework.StartLevelImpl.run(StartLevelImpl.java:266)
> >> at java.lang.Thread.run(Thread.java:662)
> >> Caused by: org.apache.openjpa.lib.util.ParseException: Instantiation of
> >> plugin "Auditor" with value
> "se.digia.maia.common.auditlog.impl.MaiaAuditor"
> >> caused an error "java.lang.IllegalArgumentException:
> >> java.lang.ClassNotFoundException:
> >> se.digia.maia.common.auditlog.impl.MaiaAuditor". The alias or class name
> may
> >> have been misspelled, or the class may not have be available in the
> class
> >> path. Valid aliases for this plugin are: [default]
> >>  at
> >>
> org.apache.openjpa.lib.conf.Configurations.getCreateException(Configurations.java:409)
> >> at
> >>
> org.apache.openjpa.lib.conf.Configurations.newInstance(Configurations.java:219)
> >>  at
> >>
> org.apache.openjpa.lib.conf.ObjectValue.newInstance(ObjectValue.java:124)
> >> at
> >>
> org.apache.openjpa.lib.conf.PluginValue.instantiate(PluginValue.java:103)
> >>  at
> >> org.apache.openjpa.lib.conf.ObjectValue.instantiate(ObjectValue.java:83)
> >> at
> >>
> org.apache.openjpa.conf.OpenJPAConfigurationImpl.getAuditorInstance(OpenJPAConfigurationImpl.java:1822)
> >>  at
> >>
> org.apache.openjpa.kernel.AbstractBrokerFactory.postCreationCallback(AbstractBrokerFactory.java:854)
> >> at
> >>
> org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.postCreationCallback(JDBCBrokerFactory.java:105)
> >>  at
> >> org.apache.openjpa.kernel.Bootstrap.newBrokerFactory(Bootstrap.java:67)
> >> ... 21 more
> >> Caused by: java.lang.IllegalArgumentException:
> >> java.lang.ClassNotFoundException:
> >> se.digia.maia.common.auditlog.impl.MaiaAuditor
> >>  at serp.util.Strings.toClass(Strings.java:164)
> >> at serp.util.Strings.toClass(Strings.java:108)
> >> at
> >>
> org.apache.openjpa.lib.conf.Configurations.newInstance(Configurations.java:211)
> >>  ... 28 more*
> >
> >
> > /Bengt
> >
> >
>

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