1. [JobGetPollerData] ClassLoader = [EMAIL PROTECTED] url="" Files/CSCOpx/MDC/jboss/server/default/tmp/deploy/server/default/deploy/qpm.jar/28.qpm.jar ,addedOrder=27}
2. ClassLoader for TimerManager = [EMAIL PROTECTED] url="" Files/CSCOpx/MDC/jboss/server/default/tmp/deploy/server/default/deploy/qpmBaseDb-service.xml/17.qpmBaseDb-service.xml ,addedOrder=16}
So as you have suggested its because the two instance of the class loader causing the issue.
One more doubt, is solution suggested is a little bit of workaround. Is there any direct way of identifying the issue and a fix for it?
One more way I found is to change the modifier to public(as I understood from the class loader docs). Before changing it I just wanted the full picture and solution.
Thanks
Muraly
At 21:50 20/07/2003 -0700, you wrote:
Hey, finally one I can answer. You are incorrect in
that it is the same loader. You are seeing the
classloader class name, not the actual instance ref. I
believe every bean, etc is loaded by its own instance
of a UnifiedClassLoader. What you need to do is print
out the reference and see that they are different.
I am not exactly sure the cure, but you might try the
Thread.currentThread().setContextLoader(loader1)
before having the bean loaded by loader2 trying to
access the bean in loader1. That may do the trick.
Just be sure to save the old loader, then restore it
after the call.
--- Muraly R <[EMAIL PROTECTED]> wrote:
> HI Gurus,
>I have a problem with the classloader and I am not
> able to understand the
> exact cause of the ERROR. Please find the error
> output from the server logs
> attached.
>
> Here the Class JobGetPollerData tries to Access a
> 'protected' method from
> TimerManager and the exception is thrown. As Scott
> suggested I read the
> class loader docs. From my understanding, if two
> different class loaders
> are used to load classes and if on tries to access
> the other this exception
> is thrown. So tried to print the Classloader for
> both the classes, and it
> is loaded by the same class
> "org.jboss.mx.loading.UnifiedClassLoader".
>
> So could you please explain, what is the issue here?
>
> Thanks
> Muraly
> > [JobGetPollerData] Reading historical task data
from
> the collector.
> 13:01:00,036 INFO [JobGetPollerData] ClassLoader =
> [EMAIL PROTECTED]
> url=""> >
Files/CSCOpx/MDC/jboss/server/default/tmp/deploy/server/default/deploy/qpm.jar/28.qpm.jar
> ,addedOrder=27}
> 13:01:00,489 INFO [String] ClassLoader for
> TimerManager =
> [EMAIL PROTECTED]
> url=""> >
Files/CSCOpx/MDC/jboss/server/default/tmp/deploy/server/default/deploy/qpmBaseDb-service.xml/17.qpmBaseDb-service.xml
> ,addedOrder=16}
> 13:01:00,489 ERROR [String] JobTask:run() -
> Throwble.
> try to access method
>
com.cisco.nm.qpm.server.util.scheduler.TimerManager.removeOnceSchedule(Ljava/util/TimerTask;)V
> from class
> com.cisco.nm.qpm.server.util.scheduler.JobTask
> 13:01:00,489 ERROR [STDERR]
> java.lang.IllegalAccessError: try to access method
>
com.cisco.nm.qpm.server.util.scheduler.TimerManager.removeOnceSchedule(Ljava/util/TimerTask;)V
> from class
> com.cisco.nm.qpm.server.util.scheduler.JobTask
> 13:01:00,489 ERROR [STDERR]at
>
com.cisco.nm.qpm.server.util.scheduler.JobTask.run(JobTask.java:52)
> 13:01:00,489 ERROR [STDERR]at
> java.util.TimerThread.mainLoop(Unknown Source)
> 13:01:00,489 ERROR [STDERR]at
> java.util.TimerThread.run(Unknown Source)
>
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