I have created the JIRA issue ARIES-1615: Calling the method
createAndCloseDummyEMF() causes NullPointerException
(https://issues.apache.org/jira/browse/ARIES-1615).
I will add the following lines to the class "DummyDataSource"
if (type == PreparedStatement.class) {
return createProxy(classLoader, PreparedStatement.class);
}
and check if this extension already fixes the issue. I will report back as soon
as possible. When things are working properly, I will open a pull request on
Github.
Thank you very much for your quick response.
Regards,
Jens
Gesendet: Dienstag, 20. September 2016 um 16:11 Uhr
Von: "Christian Schneider" <ch...@die-schneider.net>
An: user@aries.apache.org
Betreff: Re: NullPointerException - createAndCloseDummyEMF (JPA Container)
I guess we can add this case to the proxy.
Can you help by creating an issue on Aries jira and later test the
changed code from master?
Alternatively if you want you can also try to fix it yourself and
provide a pull request on github.
Christian
On 20.09.2016 15:38, Jens Offenbach wrote:
> Hi,
> we want to use EclipseLink (2.6.3) within OSGi and currently Aries JPA
> (2.4.0) seems to fit our needs, but we are heavily in trouble getting things
> working. Dynamic weaving does not seem to work, maybe related to the
> following exception:
>
> [EL Warning]: 2016-09-20
> 14:59:39.373--ServerSession(1864482722)--Thread(Thread[Start Level: Equinox
> Container:
> 80090ef3-307f-0016-1904-9194b7ab7645,5,main])--java.lang.NullPointerException
> [EL Severe]: 2016-09-20
> 14:59:39.373--ServerSession(1864482722)--Thread(Thread[Start Level: Equinox
> Container:
> 80090ef3-307f-0016-1904-9194b7ab7645,5,main])--java.lang.NullPointerException
> at
> org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:892)
> at
> org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeNoSelect(DatabaseAccessor.java:964)
> at
> org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:633)
> at
> org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:560)
> at
> org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:2056)
> at
> org.eclipse.persistence.sessions.server.ServerSession.executeCall(ServerSession.java:570)
> at
> org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:242)
> at
> org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:228)
> at
> org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeNoSelectCall(DatasourceCallQueryMechanism.java:271)
> at
> org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeNoSelect(DatasourceCallQueryMechanism.java:251)
> at
> org.eclipse.persistence.queries.DataModifyQuery.executeDatabaseQuery(DataModifyQuery.java:85)
> at
> org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:904)
> at
> org.eclipse.persistence.internal.sessions.AbstractSession.internalExecuteQuery(AbstractSession.java:3271)
> at
> org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1857)
> at
> org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1839)
> at
> org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1790)
> at
> org.eclipse.persistence.internal.sessions.AbstractSession.priviledgedExecuteNonSelectingCall(AbstractSession.java:5079)
> at
> org.eclipse.persistence.tools.schemaframework.DatabaseObjectDefinition.createOnDatabase(DatabaseObjectDefinition.java:202)
> at
> org.eclipse.persistence.tools.schemaframework.SchemaManager.createObject(SchemaManager.java:223)
> at
> org.eclipse.persistence.tools.schemaframework.TableCreator.createTables(TableCreator.java:171)
> at
> org.eclipse.persistence.tools.schemaframework.TableCreator.createTables(TableCreator.java:148)
> at
> org.eclipse.persistence.tools.schemaframework.TableCreator.createTables(TableCreator.java:140)
> at
> org.eclipse.persistence.tools.schemaframework.SchemaManager.createDefaultTables(SchemaManager.java:1032)
> at
> org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.generateDefaultTables(EntityManagerFactoryProvider.java:109)
> at
> org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.writeDDLToDatabase(EntityManagerSetupImpl.java:4225)
> at
> org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.writeDDL(EntityManagerSetupImpl.java:4153)
> at
> org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.writeDDL(EntityManagerSetupImpl.java:4053)
> at
> org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:777)
> at
> org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getAbstractSession(EntityManagerFactoryDelegate.java:205)
> at
> org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getDatabaseSession(EntityManagerFactoryDelegate.java:183)
> at
> org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getDatabaseSession(EntityManagerFactoryImpl.java:528)
> at
> org.eclipse.persistence.jpa.PersistenceProvider.createContainerEntityManagerFactoryImpl(PersistenceProvider.java:385)
> at
> org.eclipse.persistence.jpa.PersistenceProvider.createContainerEntityManagerFactory(PersistenceProvider.java:313)
> at
> org.apache.aries.jpa.eclipselink.adapter.EclipseLinkPersistenceProvider.createContainerEntityManagerFactory(EclipseLinkPersistenceProvider.java:52)
> at
> org.apache.aries.jpa.container.impl.PersistenceProviderTracker.createAndCloseDummyEMF(PersistenceProviderTracker.java:105)
> at
> org.apache.aries.jpa.container.impl.PersistenceProviderTracker.addingService(PersistenceProviderTracker.java:85)
> at
> org.apache.aries.jpa.container.impl.PersistenceProviderTracker.addingService(PersistenceProviderTracker.java:44)
> at
> org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:941)
> at
> org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:1)
> at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)
> at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229)
> at
> org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:901)
> at
> org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:109)
> at
> org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:914)
> 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.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:862)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:801)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:127)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:225)
> at
> org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:464)
> at
> org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:482)
> at
> org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:998)
> at
> org.apache.aries.jpa.eclipselink.adapter.Activator.handlePotentialEclipseLink(Activator.java:116)
> at org.apache.aries.jpa.eclipselink.adapter.Activator.start(Activator.java:72)
> at
> org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:771)
> at
> org.eclipse.osgi.internal.framework.BundleContextImpl$3.run(BundleContextImpl.java:1)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:764)
> at
> org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:721)
> at
> org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:941)
> at
> org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:318)
> at org.eclipse.osgi.container.Module.doStart(Module.java:571)
> at org.eclipse.osgi.container.Module.start(Module.java:439)
> at
> org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1582)
> at
> org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1562)
> at
> org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1533)
> at
> org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1476)
> at
> org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1)
> at
> org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
> at
> org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)
>
> We started debugging and were able to narrow the issue. In the class
> "DatabaseAccessor" of EclipseLink the following code is called (line 1570):
>
> statement = nativeConnection.prepareStatement(call.getSQLString());
>
> The nativeConnection is return by the class "DummyDataSource" and is a
> dynamic proxy using "DummyHandler" as InvocationHandler. Because the method
> "prepareStatement" returns an instance of the type
> "java.sql.PreparedStatement" the method "proxyClasses" gets called. The
> method now returns "null", because the type "PreparedStatement" is not
> covered by the if-clauses. The call "rowCount =
> ((PreparedStatement)statement).executeUpdate();" (line: 892) in the class
> "DatabaseAccessor" now results to a NullPointerExcpetion.
>
> We require your help? How can we fix the issue? Thank you very much!
>
> Regards,
> Jens
--
Christian Schneider
http://www.liquid-reality.de
Open Source Architect
http://www.talend.com[http://www.talend.com]
