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Date: Tue, 31 May 2011 14:41:47 +0000 (UTC)
From: "Rick Curtis (JIRA)" <jira@apache.org>
To: dev@openjpa.apache.org
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Subject: [jira] [Commented] (OPENJPA-2003) java.lang.NoClassDefFoundError:
 (initialization failure) raised when @MappedSuperClass is present in a jar
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    [ https://issues.apache.org/jira/browse/OPENJPA-2003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13041600#comment-13041600 ] 

Rick Curtis commented on OPENJPA-2003:
--------------------------------------

A little clarification.... Is the solution to this error moving the BaseEntity into the maven project, or including it in the <class> list in your p.xml?

Thanks,
Rick


> java.lang.NoClassDefFoundError: (initialization failure) raised when @MappedSuperClass is present in a jar
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: OPENJPA-2003
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2003
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: jpa
>    Affects Versions: 1.2.2
>         Environment: Spring 3.0x, JUnit 4.4
>            Reporter: reverttoconsole
>
> I have a @MappedSuperclass BaseEntity (empty) that's include in a common-utils.jar. In another maven project, I have JPA 1.0 entities which extend BaseEntity. On running a unit test, I get the following error:
> Caused by: java.lang.NoClassDefFoundError: xxx.entity.ProfileLoadError (initialization failure)
> 	at java.lang.J9VMInternals.initialize(J9VMInternals.java:140)
> 	at java.lang.Class.forNameImpl(Native Method)
> 	at java.lang.Class.forName(Class.java:169)
> 	at org.apache.openjpa.meta.MetaDataRepository.classForName(MetaDataRepository.java:1522)
> 	at org.apache.openjpa.meta.MetaDataRepository.loadPersistentTypesInternal(MetaDataRepository.java:1504)
> 	at org.apache.openjpa.meta.MetaDataRepository.loadPersistentTypesLocking(MetaDataRepository.java:1491)
> 	at org.apache.openjpa.meta.MetaDataRepository.loadPersistentTypes(MetaDataRepository.java:1484)
> 	at org.apache.openjpa.kernel.AbstractBrokerFactory.loadPersistentTypes(AbstractBrokerFactory.java:276)
> 	at org.apache.openjpa.kernel.AbstractBrokerFactory.initializeBroker(AbstractBrokerFactory.java:228)
> 	at org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:190)
> 	at org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:142)
> 	at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:192)
> 	at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:145)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:59)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:39)
> 	at java.lang.reflect.Method.invoke(Method.java:612)
> 	at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.invokeProxyMethod(AbstractEntityManagerFactoryBean.java:423)
> 	at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(AbstractEntityManagerFactoryBean.java:485)
> 	at $Proxy21.createEntityManager(Unknown Source)
> 	at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:234)
> 	at $Proxy22.persist(Unknown Source)
> 	at org.frb.bos.tcms.profile.SeedData.afterPropertiesSet(SeedData.java:37)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1477)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1417)
> 	... 37 more
> If I move the BaseEntity into the maven project, I don't get this error.
> Turns out that the error is gone when I include BaseEntity in persistence.xml. But it seems to me that this has to be documented clearly or atleast the error message should be clearer because NoClassDefFoundError is misleading. Maybe openjpa's classloader doesn't automatically scan the classpath for the missing entities?
> I don't get this error in hibernate.

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