On 30/05/2010 20:28, Robert wrote: > Hi, I followed the instructions on setting up the persistence in the > drools flow doc, but I get the following exception: > > > Exception in thread "main" java.lang.RuntimeException: Could not commit > session > at > org.drools.persistence.session.SingleSessionCommandService.<init>(SingleSessionCommandService.java:133) > at > org.drools.persistence.jpa.impl.JPAKnowledgeServiceProviderImpl.newStatefulKnowledgeSession(JPAKnowledgeServiceProviderImpl.java:44) > at > org.drools.persistence.jpa.JPAKnowledgeService.newStatefulKnowledgeSession(JPAKnowledgeService.java:93) > at > com.rob.server.core.process.drools.tasks.DroolsProcessHandler.<init>(DroolsProcessHandler.scala:130) > at > com.rob.server.core.process.drools.tasks.StartDroolsProcessHandler$.main(DroolsProcessHandler.scala:33) > at > com.rob.server.core.process.drools.tasks.StartDroolsProcessHandler.main(DroolsProcessHandler.scala) > Caused by: javax.naming.NameNotFoundException; remaining name > 'UserTransaction' > at org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:576) > at org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:663) > at org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:678) > at > org.eclipse.jetty.jndi.java.javaRootURLContext.lookup(javaRootURLContext.java:110) > at javax.naming.InitialContext.lookup(InitialContext.java:392) > at > org.drools.persistence.session.SingleSessionCommandService.<init>(SingleSessionCommandService.java:109) > ... 5 more > > > I have no idea what this means. I guess SingleSessionCommandService is > looking up for "UserTransaction", but whats the "UserTransaction" ? > You need to configure JTA and JNDI, it uses the standard JNDI lookup mechanism to find the UserTransaction it's to be associated with. See javadocs example here: http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/stable/drools-api/org/drools/persistence/jpa/JPAKnowledgeService.html
Each transaction framework has a different way to be configured, some are simpler than others. Mark > Cheers, Rob. > > _______________________________________________ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
