... can not access a member of class ... with modifiers "pub

[olegnitz]

I've encountered a strange exception:
org.jboss.serial.exception.SerializationException: Could not create instance of (class name here) - Class org.jboss.serial.classmetamodel.ClassMetaData can not access a member of class (class name here) with modifiers "public"
at org.jboss.serial.classmetamodel.ClassMetaData.newInstance(ClassMetaData.java:346)
at org.jboss.serial.persister.ExternalizePersister.readData(ExternalizePersister.java:67)
at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectInput.readObject(DataContainer.java:634)
at org.jboss.serial.persister.ArrayPersister.readObjectArray(ArrayPersister.java:196)
at org.jboss.serial.persister.ArrayPersister.readData(ArrayPersister.java:172)
at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectInput.readObject(DataContainer.java:634)
at org.jboss.serial.io.JBossObjectInputStream.readObjectOverride(JBossObjectInputStream.java:163)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:333)
...

Unfortunately this exception is not stable, I cannot reproduce it in the testcase. It appears from time to time.
The class is a static inner class which implements Externalizable. Also it was obfuscated by KlassMaster. However the decompiled class looks okay: all "public" modifiers are in place.
For now I cannot spend more time catching this exception, I just thought that you should know of it. And when eventually someone will provide a testcase for this bug and you will solve the problem, please notify me in this thread. Thanks.

[clebert.suconic]

There is another post about Externalizable static classes also.

I will try to reproduce a testcase within SoakTestCase.
But are you sure you don't have any ClassLoader isolation issue within your environment?

What class you're trying to serialize. Is that your own class, or do you have public available I could take a look?

[clebert.suconic]

http://jira.jboss.com/jira/browse/JBSER-80
I guess I have reproduced the bug.

[clebert.suconic]

Look at this thread:

http://www.jboss.com/index.html?module=bb&op=viewtopic&t=84449&start=10

This should be fixed tomorrow.


Thanks,


Clebert

[olegnitz]

Hi Clebert,

But are you sure you don't have any ClassLoader isolation issue within your environment?

No, I am not sure. But I've got this exception both inside JBoss (where the inner class is loaded via in jboss-service.xml - I mean it's loaded not via bean classloader) and inside our client part, where we use our own classloader, but it's quite simple, it just understands wildcard classpath format. With Java serialization we have no problem.

What class you're trying to serialize. Is that your own class, or do you have public available I could take a look?

Yes, it's our own class. I've sent it to you via e-mail.

I hope you've really reproduced the bug. However as far as I know from our testers, it appears also with public inner class, while in your jira issue it's private. Anyway I wish you success and I promise to test the new version ;)

[clebert.suconic]

Yes...
I have the fix...
it will be committed soon.


Cheers,


Clebert

[olegnitz]

Now everything works fine.
Thank you, Clebert, nice work!