[jboss-jira] [JBoss JIRA] Commented: (EJBTHREE-572) PersistenceUnitInfo.getNewTempClassLoader()

[Alexander Tsirel (JIRA)]

    [ http://jira.jboss.com/jira/browse/EJBTHREE-572?page=comments#action_12399226 ] 
            
Alexander Tsirel commented on EJBTHREE-572:
-------------------------------------------

I was using toplinks property (taken from forums): 
<property name="toplink.target-server" value="oracle.toplink.essentials.platform.server.jboss.JBossPlatform"/>

Although there is no such class I get NPE instead of ClassNotFound:

Caused by: java.lang.NullPointerException
	at org.jboss.mx.loading.RepositoryClassLoader.findClass(RepositoryClassLoader.java:623)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:467)
	at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:408)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:242)
	at oracle.toplink.essentials.internal.security.PrivilegedAccessHelper.getClassForName(PrivilegedAccessHelper.java:98)
	at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.findClass(EntityManagerSetupImpl.java:410)
	at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.findClassForProperty(EntityManagerSetupImpl.java:416)
	at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.updateServerPlatform(EntityManagerSetupImpl.java:316)
	at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:567)

The lookup was done by such temp classloader acquired in predeploy method:

16:01:29,030 INFO  [STDOUT] Inside PrivilegedAccessHelper, looking for: oracle.toplink.essentials.platform.server.jboss.JBossPlatform with classLoader: org.jboss.mx.loading.UnifiedClassLoader3 at 1813c12{ url=file:/C:/jboss-4.2.1.GA/server/default/tmp/deploy/tmp17799javaEEApplication.ear ,addedOrder=0}

There are some  notes in the internet about that, hope they'll help resolving issue:
http://forums.oracle.com/forums/thread.jspa?messageID=2186220&#2186220
https://glassfish.dev.java.net/issues/show_bug.cgi?id=3721

> PersistenceUnitInfo.getNewTempClassLoader()
> -------------------------------------------
>
>                 Key: EJBTHREE-572
>                 URL: http://jira.jboss.com/jira/browse/EJBTHREE-572
>             Project: EJB 3.0
>          Issue Type: Bug
>            Reporter: Emmanuel Bernard
>
> The sooner the better.
> Hibernate can't enhance the classes to make property (not association) lazy loading.
> Toplink just can't start.
> http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3939615#3939615

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