[rules-users] KnowledgeAgent custom class loader not working for PKG resources

[Herman Post]

In debug,  KnowledgeAgentImpl.createPackageFromResource(), the last line to run is DroolsStreamUtils.streamIn(is), then an excecption is caught:

this.listener.exception( new RuntimeException( "KnowledgeAgent exception while trying to deserialize KnowledgeDefinitionsPackage  ", ex));

The exception here says "java.lang.ClassNotFoundException: org.ihc.hwcir.drools.facts.Patient", which is my Fact model.  It doesn't seem to get surfaced anywhere.

As my sample illustrates, if I switch to DRL changeset, or put Patient.jar on classpath all works fine.

Thanks,

Herm

From: rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Esteban Aliverti
Sent: Thursday, February 16, 2012 10:33 AM
To: Rules Users List
Subject: Re: [rules-users] KnowledgeAgent custom class loader not working for PKG resources

By the way, in the stacktrace you pasted I only see a NullPointerException, but no ClassNotFoundException. Where are you seeing the ClassNotFoundException?

Best Regards,

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com

2012/2/16 Herman Post <Herman.Post at imail.org<mailto:Herman.Post at imail.org>>
Thanks Esteban, I will enter in Jira.


Herm

From: rules-users-bounces at lists.jboss.org<mailto:rules-users-bounces at lists.jboss.org> [mailto:rules-users-bounces at lists.jboss.org<mailto:rules-users-bounces at lists.jboss.org>] On Behalf Of Esteban Aliverti
Sent: Thursday, February 16, 2012 10:07 AM
To: Rules Users List
Subject: Re: [rules-users] KnowledgeAgent custom class loader not working for PKG resources

Seems like a bug to me. The best you can do is to rise a Jira issue.
Actually, the best you can do is to provide a patch also ;)

Best Regards,

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
On Thu, Feb 16, 2012 at 5:59 PM, Hrumph <Herman.Post at imail.org<mailto:Herman.Post at imail.org>> wrote:
Sorry for being a nuisance, but unless we are doing something wrong, this is
a significant issue for us.  We are trying to deploy Drools on a remote
server and hope to pull PKG Changesets and Fact models from Guvnor.  It is
essential that we can use custom Classloaders in our design.

Should I just enter this in Jira?

Thanks,

Herm



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