[rules-users] Class loader issue with dynamically generated classes and JBoss AS

[Jordan.Parker at SunGard.com]

We’re having a class loader issue compiling rules that use dynamically 
generated java beans as facts when deploying our application on JBoss 
Application Server, versions 4.0.3SP1 and 4.0.5.  We’re using JBoss Rules 
4.0.0.MR2 and the Janino compiler.  When deploying to WebLogic 9.2, there 
are no issues compiling or executing those same rules.

We’ve tried setting the class loader several different ways, including 
using the method Edson suggests in his blog entry on using dynamically 
generated classes.  The issue seems to be with the JBoss class loader 
UnifiedClassLoader3, which contains a list of blacklisted classes.  If I 
cast the context class loader to UnifiedClassLoader3, and call ‘
clearBlackLists()’ before compiling the rules, the rules compile and 
execute without any issues.  Otherwise, I get the error ‘Unable to resolve 
ObjectType 'NameOfGeneratedClass'’.

My question is has anyone run across this issue before, or does anyone 
have a solution to this problem that doesn’t require application server 
specific code (casting and calling the clearBlackLists method)?

Thank you,

Jordan Parker
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20070523/b14c5525/attachment.html