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[ EMF / Teneo / EclipseLink ] ClassLoading issue with JPA osgi PersistenceProvider [message #815456]

Wed, 07 March 2012 17:39

Mathieu Guillet

Messages: 2
Registered: March 2012
Location: France

Junior Member

Hi,

i'm facing a NoClassDefFoundError when testing my EMF + Teneo + EclipseLink + JPA configuration on my RCP application.
The class apparently missing is "org.eclipse.persistence.jpa.osgi.PersistenceProvider" but it actually is in my plug-in dependencies (i've got org.eclipse.persistence.jpa.osgi;version="2.3.1" in my dependencies list).

So i guess it could be a class loading matter, but i'm not sure, and above all, i don't know how to resolve it!

The plug-in in question hold the EMF model definition, the model implementation and the model storing mecanism.

Here is the Java code source causing the error :

    /**
     * Save the event model in database.
     * 
     * @param eventModel
     *            the event model
     */
    public static void saveDatabase(final EventModel eventModel) {

        final String query = EclipseLinkURIUtil.createContentsEqualQuery(EventPackage.eINSTANCE.getEvent(),
                EventPackage.eINSTANCE.getEvent_Id(), -1);

        final URI eventDbURI = EclipseLinkURIUtil.createEclipseLinkURI("events", query);

        // save event model instance in database
        ResourceSet resourceSet = new ResourceSetImpl();
        resourceSet.getLoadOptions().putAll(getPersistenceUnitProperties());
        final Resource eventModelResource = resourceSet.createResource(eventDbURI);

        Assert.isTrue(eventModelResource instanceof EclipseLinkResourceImpl);

        eventModelResource.getContents().add(eventModel);
        try {
            eventModelResource.save(Collections.EMPTY_MAP);
        } catch (IOException e) {
            Logger.logError(e, "Unable to save Model to file [" + eventDbURI.toString() + "]", //$NON-NLS-1$ //$NON-NLS-2$
                    ReportPlugin.getDefault().getBundle());
        }
    }

    /**
     * Load the event model from database.
     * 
     * @param eventModel
     *            the event model
     */
    public static EventModel loadDatabase() {

        final String query = EclipseLinkURIUtil.createContentsEqualQuery(EventPackage.eINSTANCE.getEvent(),
                EventPackage.eINSTANCE.getEvent_Id(), -1);

        final URI eventDbURI = EclipseLinkURIUtil.createEclipseLinkURI("events", query);

        // save event model instance in database
        ResourceSet resourceSet = new ResourceSetImpl();
        resourceSet.getLoadOptions().putAll(getPersistenceUnitProperties());
        final Resource eventModelResource = resourceSet.getResource(eventDbURI, true);

        Assert.isTrue(eventModelResource instanceof EclipseLinkResourceImpl);

        EventModel model = null;
        if ((eventModelResource.getContents() != null) && (!eventModelResource.getContents().isEmpty())) {
            model = (EventModel) eventModelResource.getContents().get(0);
        }
        return model;
    }

    private static Map<String, Object> getPersistenceUnitProperties() {
        final HashMap<String, Object> options = new HashMap<String, Object>();
        options.put(PersistenceUnitProperties.CLASSLOADER, ClassLoaderResolver.getClassLoader());
        return options;
    }

Here is the stacktrace I get :

!STACK 0
java.lang.NoClassDefFoundError: org/eclipse/persistence/jpa/osgi/PersistenceProvider
	at org.eclipse.emf.teneo.eclipselink.resource.EclipseLinkResourceImpl.openDatabase(EclipseLinkResourceImpl.java:562)
	at org.eclipse.emf.teneo.eclipselink.resource.EclipseLinkResourceImpl.doLoad(EclipseLinkResourceImpl.java:498)
	at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1511)
	at org.eclipse.emf.teneo.eclipselink.resource.EclipseLinkResourceImpl.load(EclipseLinkResourceImpl.java:405)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:255)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:270)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:397)
	at com.mycompany.myplugin.reporting.event.util.EventUtils.loadDatabase(EventUtils.java:164)
	at com.mycompany.myplugin.reporting.eventcontroller.impl.EventModelControllerImpl.loadPersistence(EventModelControllerImpl.java:114)
	at com.mycompany.myplugin.reporting.eventcontroller.impl.EventModelControllerImpl.<init>(EventModelControllerImpl.java:42)
	at com.mycompany.myplugin.reporting.eventcontroller.impl.EventModelControllerImpl$$FastClassByGuice$$62e0f41b.newInstance(<generated>)
	at com.google.inject.internal.cglib.reflect.$FastConstructor.newInstance(FastConstructor.java:40)
	at com.google.inject.internal.DefaultConstructionProxyFactory$1.newInstance(DefaultConstructionProxyFactory.java:60)
	at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:85)
	at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:254)
	at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1031)
	at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
	at com.google.inject.Scopes$1$1.get(Scopes.java:65)
	at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:40)
	at com.google.inject.internal.InjectorImpl$3.get(InjectorImpl.java:737)
	at com.google.inject.internal.SingleFieldInjector.inject(SingleFieldInjector.java:53)
	at com.google.inject.internal.MembersInjectorImpl.injectMembers(MembersInjectorImpl.java:110)
	at com.google.inject.internal.MembersInjectorImpl$1.call(MembersInjectorImpl.java:75)
	at com.google.inject.internal.MembersInjectorImpl$1.call(MembersInjectorImpl.java:73)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1024)
	at com.google.inject.internal.MembersInjectorImpl.injectAndNotify(MembersInjectorImpl.java:73)
	at com.google.inject.internal.MembersInjectorImpl.injectMembers(MembersInjectorImpl.java:60)
	at com.google.inject.internal.InjectorImpl.injectMembers(InjectorImpl.java:944)
	at com.mycompany.myplugin.ioc.IocPlugin.injectMembers(IocPlugin.java:80)
	at com.mycompany.myplugin.audit.util.ReportingHandler.<init>(ReportingHandler.java:35)
	at com.mycompany.myplugin.audit.view.AuditView$2.<init>(AuditView.java:115)
	at com.mycompany.myplugin.audit.view.AuditView.createPartControl(AuditView.java:115)
	[...]
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at com.mycompany.myplugin.ssm.product.SSMApplication.start(SSMApplication.java:26)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Caused by: java.lang.ClassNotFoundException: org.eclipse.persistence.jpa.osgi.PersistenceProvider
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:513)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 88 more

And here is my plug-in Manifest.mf file :

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: %Bundle-Name
Bundle-SymbolicName: com.mycompany.myplugin.reporting;singleton:=true
Bundle-Version: 0.1.0.qualifier
Bundle-Activator: com.mycompany.myplugin.reporting.ReportPlugin
Bundle-Vendor: %Bundle-Vendor
Require-Bundle: com.google.guice,
 com.mysql.jdbc,
 com.mycompany.myplugin.logging,
 javax.annotation,
 javax.persistence;bundle-version="1.99.0",
 org.apache.commons.logging,
 org.eclipse.core.runtime,
 org.eclipse.emf.ecore,
 org.eclipse.emf.ecore.xmi,
 org.eclipse.emf.teneo.orm,
 org.eclipse.emf.teneo.eclipselink,
 org.eclipse.persistence.jpa;bundle-version="2.3.1",
 org.eclipse.persistence.jpa.osgi;bundle-version="2.3.1"
Bundle-RequiredExecutionEnvironment: JavaSE-1.6
Bundle-ActivationPolicy: lazy
Export-Package: com.mycompany.myplugin.reporting,
 com.mycompany.myplugin.reporting.event,
 com.mycompany.myplugin.reporting.event.impl,
 com.mycompany.myplugin.reporting.event.util,
 com.mycompany.myplugin.reporting.eventcontroller,
 com.mycompany.myplugin.reporting.message,
 com.mycompany.myplugin.reporting.syslog

Hopefully, this problem is not a real one and i just missed some configuration thing. Otherwise, any help would be greatly appreciated.

(I'm using org.eclipse.emf.teneo 1.1.2 and org.eclipse.emf.teneo.eclipselink 1.0.0)

Regards,
Mathieu

[Updated on: Wed, 07 March 2012 17:46]

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