Re: [Hibernate-devel] RE: JMX/JBoss

[Christian M. <vc...@cl...>]

In case it could help

http://kb.atlassian.com/content/atlassian/howto/classloaders.jsp

Chris

----- Original Message -----
From: "Urberg, John" <ju...@ve...>
To: <Gavin_King/Cirrus%CI...@ci...>;
<hib...@li...>
Sent: Thursday, August 08, 2002 4:04 PM
Subject: RE: [Hibernate-devel] RE: JMX/JBoss


> > Damn! I really don't understand why the following line wouldn't
> > work:
> >
> >  ds.storeResource(
> >    resources[i], Thread.currentThread().getContextClassLoader()
> >  );
> >
> >( in SessionFactoryStub.getImpl() ). Have I got it totally wrong,
> > or isn't Thread.currentThread.getContextClassLoader() meant to get
> > the classloader used by the calling EJB? Perhaps I'm
> > hallucinating...
>
> I often feel that way when confronted with class loaders.  I don't know
much
> about them yet, so I can't be much help there.
>
> >> The only way I can see making this MBean useful is if users put all >>
> their mapped classes and mappings in the server's classpath.  Then
> >> they can put them all in one mapping or split them up and it won't
> >> matter because the MBean and SessionFactoryStub will have access
> >> to them.
>
> I should always test it out before I make pronounciations!  I tried my
> little example with the jar files containing the mapping files in Jboss's
> lib/ext directory (which get loaded when JBoss starts up).  I got the same
> exception as I did when it was in the EJB jar file.  The SesstionFactory
> stub could not find it.  When I moved the creation of the SessionFactory
> completely into a class in my jar file, everything worked a.o.k.  (This
last
> version is what I'm doing in my application)
>
> My original attempt created the session factory in the MBean at startup.
I
> had the domain classes in jboss's lib/ext directory and the MBean seemed
to
> find them ok.  Unless someone has some classloader answers for you, this
> will probably be the only way to do it.
>
> Regards,
> John
>
>
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