[jboss-user] [jBPM] - Re: Instantiating the KnowledgeBase

[vasiliki oikonomidou]

vasiliki oikonomidou [http://community.jboss.org/people/voikonomidou] created the discussion

"Re: Instantiating the KnowledgeBase"

To view the discussion, visit: http://community.jboss.org/message/591097#591097

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Hi Julio,

If you want to upload a knowledge base which includes the process definitions from guvnor repository the code you require is the following:

ProcessBuilderFactory.setProcessBuilderFactoryService(new ProcessBuilderFactoryServiceImpl());
ProcessMarshallerFactory.setProcessMarshallerFactoryService(new ProcessMarshallerFactoryServiceImpl());        ProcessRuntimeFactory.setProcessRuntimeFactoryService(new ProcessRuntimeFactoryServiceImpl());
BPMN2ProcessFactory.setBPMN2ProcessProvider(new BPMN2ProcessProviderImpl());        

KnowledgeAgentConfiguration aconf = KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
KnowledgeAgent kagent = KnowledgeAgentFactory.newKnowledgeAgent("testKAgent", aconf);       
        kagent.applyChangeSet( 
                ResourceFactory.newUrlResource(
                " http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor"
                + "/package/defaultPackage/LATEST/ChangeSet.xml")); 


And then you take the knowledgeBase from the KnowledgeAgent like this :
KnowledgeBase kbase = kagent.getKnowledgeBase();

In order to take the process you want from within the knowledgeBase you create a knowledgeSession :
 StatefulKnowledgeSession ksession =
                    JPAKnowledgeService.newStatefulKnowledgeSession(kbase, config, env);

And finally something like  "ksession.getProcessInstances()" will gine you the collection of all the processes that lie inside the guvnor repository.

Regards,

Vasiliki.
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