You will need to solve that problem. looks like a configuration problem,
can you share the persistence.xml file? did you configure persistence with
JTA?
Cheers
2011/11/9 S.M.H.Jamali <cpp...@yahoo.com>
> Hello all,
>
> I get an exception while last line of below method executed :
>
> public StatefulKnowledgeSession createSession() throws Exception {
>
> /*
> * Create the knowledgebase using the required bpmn and drl files
> */
> KnowledgeBase kbase = readKnowledgeBase("HumanTask.bpmn");
> EntityManagerFactory emf = Persistence.createEntityManagerFactory(
> "org.jbpm.persistence.jpa" );
> Environment env = KnowledgeBaseFactory.newEnvironment();
> env.set( EnvironmentName.ENTITY_MANAGER_FACTORY, emf );
> env.set( EnvironmentName.TRANSACTION_MANAGER,
> TransactionManagerServices.getTransactionManager() );
> env.set( EnvironmentName.GLOBALS, new MapGlobalResolver() );
>
> Properties properties = new Properties();
> properties.put("drools.processInstanceManagerFactory",
> "org.jbpm.persistence.processinstance.JPAProcessInstanceManagerFactory");
> properties.put("drools.processSignalManagerFactory",
> "org.jbpm.persistence.processinstance.JPASignalManagerFactory");
> KnowledgeSessionConfiguration config =
> KnowledgeBaseFactory.newKnowledgeSessionConfiguration(properties);
>
> return JPAKnowledgeService.newStatefulKnowledgeSession(kbase,
> config, env);
>
> }
>
> its stack-trace is :
>
> 14:26:13,111 WARN [JtaTransactionManager] Participating in existing JTA
> transaction, but no JTA TransactionManager or
> TransactionSychronizationRegistry available:
> java.lang.NullPointerException
> at
> org.drools.persistence.jta.JtaTransactionManager.registerTransactionSynchronization(JtaTransactionManager.java:221)
> at
> org.drools.persistence.SingleSessionCommandService.registerRollbackSync(SingleSessionCommandService.java:333)
> at
> org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:123)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)...
>
> Can anyone help me to solve this problem ?
> Thanks in advance
> S.M.H.Jamali
>
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>
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