Re: [rules-users] KnowledgeAgent exception while trying to deserialize

Monday, 6 December 2010

I had a ruleflow resource I needed to add, and I cleaned up my KB
creation code and that seemed to take care of it.  I also did a rebuild
of the package in Guvnor, so I'm not 100% sure what exactly fixed it,
but it is fixed.  Thanks for the follow-up.

...
Message: 1
Date: Sat, 04 Dec 2010 04:47:23 +0000
From: Mark Proctor <mproctor(a)codehaus.org&gt;
Subject: Re: [rules-users] KnowledgeAgent exception while trying to
	deserialize KnowledgeDefinitionsPackage
To: rules-users(a)lists.jboss.org
Message-ID: <4CF9C7DB.2010900(a)codehaus.org&gt;
Content-Type: text/plain; charset="iso-8859-1"

Did you recompile the packages in Guvnor, there is a button for that. 
Server and client must all be on the same version, as well as compiled Packages.
...

Mark
On 03/12/2010 16:15, John Peterson wrote:
>
> I'm getting the following error when I attempt torun my Drools 
> application.  I recently upgraded from Drools 5.0.1 and Guvnor 5.0.1 
> to 5.1.1 (for both).  I've looked through the rules-users list and I 
> found the issue with the XML Change Set (authentication), which I've 
> addressed (XML listed at the bottom), but I'm still getting the error.  
...
> Does anyone have any ideas or can point me in a particular
direction?
>
> Thanks
>
> Error:
>
> [2010:12:337 09:12:373:debug] KnowledgeAgent mapping 
> resource=[ClassPathResource path='ruleflow.rf'] to 
> KnowledgeDefinition=org.drools.ruleflow.core.RuleFlowProcess@2d89ba2a
>
> [2010:12:337 09:12:373:exception]
>
> _java.lang.RuntimeException_: KnowledgeAgent exception while trying to 
...
> deserialize KnowledgeDefinitionsPackage
>
> at
> org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(_
...
> KnowledgeAgentImpl.java:914_)
>
> at
> org.drools.agent.impl.KnowledgeAgentImpl.rebuildResources(_KnowledgeAg
...
> entImpl.java:704_)
>
> at
> org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(_Knowledge
...
> AgentImpl.java:584_)
>
> at
> org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(_KnowledgeAgen
...
> tImpl.java:185_)
>
> at
> org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(_KnowledgeAgen
...
> tImpl.java:168_)
>
> at
> com.agencyawards2.RuleSessionProviderFactory.getSessionFactory(_RuleSe
...
> ssionProviderFactory.java:102_)
>
> at
> com.agencyawards2.RuleSessionProviderFactory.getProvider(_RuleSessionP
...
> roviderFactory.java:30_)
>
> at com.agencyawards2.RunRules.runRules(_RunRules.java:25_)
>
> at com.agencyawards2.DroolsTest.main(_DroolsTest.java:36_)
>
> Caused by:_java.lang.NullPointerException_
>
> at 
> org.drools.process.core.impl.ProcessImpl.equals(_ProcessImpl.java:134_
...
> )
>
> at java.util.HashMap.put(Unknown Source)
>
> at java.util.HashSet.add(Unknown Source)
>
> at
> org.drools.agent.impl.KnowledgeAgentImpl$RegisteredResourceMap.putDefi
...
> nition(_KnowledgeAgentImpl.java:1150_)
>
> at
> org.drools.agent.impl.KnowledgeAgentImpl.addDefinitionMapping(_Knowled
...
> geAgentImpl.java:1037_)
>
> at
> org.drools.agent.impl.KnowledgeAgentImpl.buildResourceMapping(_Knowled
...
> geAgentImpl.java:496_)
>
> at
> org.drools.agent.impl.KnowledgeAgentImpl.buildResourceMapping(_Knowled
...
> geAgentImpl.java:443_)
>
> at
> org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(_
...
> KnowledgeAgentImpl.java:912_)
>
> ... 8 more
>
> Change Set:
>
> *<?xml version="1.0" encoding="UTF-8" ?> *
>
> *- <change-set xmlns="http://drools.org/drools-5.0/change-set" 
> xmlns:xs="http://www.w3.org/2001/XMLSchema-instance" 
> xs:schemaLocation="http://drools.org/drools-5.0/change-set
> drools-change-set-5.0.xsd">*
>
> *- <add>*
>
> *<resource
> source="http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/pac
kage/com.agencyawards2/LATEST" 
...
> type="PKG" basicAuthentication="enabled"
username="admin" 
> password="admin" /> *
>
> *</add>*
>
> *</change-set>*
>
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users 

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