jBPM 5.2 : NullpointerException Issue in loading knowledgeAgent.applyChangeSet(ResourceFactory.newUrlResource(url));

[uvijayreddy657]

Getting NullpointerException issue in JBPM 5.2 when loading kbase using KnowledgeAgent. But same is working with JBPM 5.1 without any issue.

url= http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/SDS/LATEST/ChangeSet.xml 

knowledgeAgent .applyChangeSet(ResourceFactory.newUrlResource(url)); 

The following exception I am getting with JBPM 5.2 jars. But the same is working with jBPM 5.1 jars.

Stacktrace:

java.lang.NullPointerException

at org.drools.impl.KnowledgeBaseImpl.addKnowledgePackages(KnowledgeBaseImpl.java:148)
at org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(KnowledgeAgentImpl.java:1016)
at org.drools.agent.impl.KnowledgeAgentImpl.incrementalBuildResources(KnowledgeAgentImpl.java:933)
at org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(KnowledgeAgentImpl.java:659)
at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:190)

at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:169)

[tsurdilovic]

Could you provide your repository export xml to test with? In Guvnor Administration section go to the Import Export section and export your repository, then provide the generated zip.

Thanks.

[uvijayreddy657]

Tihomir,

Here I am attaching Repository Export XML.

Thnaks for your very quick replies.

[swiderski.maciej]

I ran into similar issue - please rebuild your package(s) in Guvnor. After package is rebuilt it will have compatible structure with latest library versions, there were some new fields added in some of the objects if I debug it correctly. If I recall correctly it was done in 5.3 of drools-core...

HTH