Thanks Kris Will download from the below link and check.
Quick question, do you know when the official 5.1 release will be available ? Kris Verlaenen wrote: > > The fix for this issue has been added to trunk about a month ago already > I think, have you already tried with the 5.1.0 SNAPSHOT release? Does > this solve your issue? > > You can get the snapshot at > https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/ > > Kris > > Quoting SBalakrishnan <[email protected]>: > >> >> Looks like I am running into the same/similar issue while recreating >> from a >> session_id. >> Exception pasted below. >> >> Any idea whether it will be addressed in the coming release ? >> >> >> Thanks in advance.. >> >> >> /*--------------------------------------------*/ >> >> Hibernate: select sessioninf0_.id as id0_0_, sessioninf0_.dirty as >> dirty0_0_, sessioninf0_.lastModificationDate as lastModi3_0_0_, >> sessioninf0_.rulesByteArray as rulesByt4_0_0_, sessioninf0_.startDate >> as >> startDate0_0_ from SessionInfo sessioninf0_ where sessioninf0_.id=? >> java.lang.RuntimeException: Unable to load session snapshot >> at >> > org.drools.persistence.session.JPASessionMarshallingHelper.loadSnapshot(JPASessionMarshallingHelper.java:112) >> at >> > org.drools.persistence.session.JPASessionMarshallingHelper.<init>(JPASessionMarshallingHelper.java:46) >> at >> > org.drools.persistence.session.SingleSessionCommandService.<init>(SingleSessionCommandService.java:171) >> at >> > org.drools.persistence.jpa.impl.JPAKnowledgeServiceProviderImpl.loadStatefulKnowledgeSession(JPAKnowledgeServiceProviderImpl.java:75) >> at >> > org.drools.persistence.jpa.JPAKnowledgeService.loadStatefulKnowledgeSession(JPAKnowledgeService.java:102) >> at >> > org.drools.examples.process.order.OrderExample.createWorkingMemory(OrderExample.java:257) >> at >> > org.drools.examples.process.order.OrderExample.<init>(OrderExample.java:99) >> at >> org.drools.examples.process.order.OrderExample.main(OrderExample.java:80) >> Caused by: java.lang.NullPointerException >> at >> > org.drools.marshalling.impl.InputMarshaller.readLeftTuple(InputMarshaller.java:496) >> at >> > org.drools.marshalling.impl.InputMarshaller.readLeftTuples(InputMarshaller.java:426) >> at >> > org.drools.marshalling.impl.InputMarshaller.readFactHandles(InputMarshaller.java:349) >> at >> > org.drools.marshalling.impl.InputMarshaller.readSession(InputMarshaller.java:207) >> at >> > org.drools.marshalling.impl.DefaultMarshaller.unmarshall(DefaultMarshaller.java:75) >> at >> > org.drools.persistence.session.JPASessionMarshallingHelper.loadSnapshot(JPASessionMarshallingHelper.java:104) >> /*--------------------------------------------*/ >> >> >> Mauricio Salatino wrote: >> > >> > Ok, I will try to take a look at it.. this week.. >> > I will let you know if I can fix it >> > >> > 2009/7/28 DroolsUser <[email protected]>: >> >> Mark / salaboy, I am also facing same problem while recreate the >> session >> >> from database. Can you advice any alternative, so that I can go >> forward >> >> till >> >> the next release. Moreover when is the new release is ....... Do >> new >> >> release >> >> will targeting this kind problem? Please suggest any alternative >> to >> >> recreate >> >> the session from db. Thanks in advance...... >> >> >> >> gairey wrote: >> >> Mark, Done: https://jira.jboss.org/jira/browse/JBRULES-2199 - >> thanks for >> >> the >> >> quick response. Regards, Alan Mark Proctor Sent by: >> >> [email protected] 08/07/2009 13:49 Please >> respond to >> >> Rules >> >> Users List To Rules Users List cc Subject Re: [rules-users] >> Problem with >> >> JPA >> >> session persistence in Drools Flow (5.0.1) Can you open a JIRA for >> this, >> >> and >> >> we'll make sure it's done in the next few weeks: >> >> https://jira.jboss.org/jira/browse/JBRULES thanks Mark >> >> [email protected] wrote: I'm currently using Drools Flow >> with JPA >> >> session persistence enabled as described in section 5.1 of the >> User >> >> Guide. >> >> As a process executes, session information is saved to the H2 >> database >> >> correctly. The problem comes if a process only executes part way >> through, >> >> and I then try to finish the process by recreating a session using >> the >> >> code: >> >> // recreate the session from database using the sessionId ksession >> = >> >> JPAKnowledgeService.loadStatefulKnowledgeSession( sessionId, >> kbase, null, >> >> env ); This gives me a NullPointerException. Having looked into >> the >> >> Drools >> >> Flow source code, I think the problem is in the class >> >> >> > drools-persistence-jpa\src\main\java\org\drools\persistence\session\SingleSessionCommandService.java. >> >> The 4th constructor of this class is called as part of the loading >> of a >> >> knowledge session from the H2 database; this in turn leads to the >> >> afterCompletion method of the inner class SynchronizationImpl >> being >> >> called. >> >> The final two lines of this method are: >> ((JPAProcessInstanceManager) >> >> ((ReteooWorkingMemory) >> >> session).getProcessInstanceManager()).clearProcessInstances(); >> >> ((JPAWorkItemManager) ((ReteooWorkingMemory) >> >> session).getWorkItemManager()).clearWorkItems(); However, when >> called via >> >> the route described above, the session member variable of >> >> SingleSessionCommandService has not been set, thus causing the >> >> NullPointerException. (Interestingly, running the unit tests for >> >> drools-persistence-jpa does result in the NullPointerException >> being >> >> thrown >> >> multiple times, although the tests are still listed as having >> passed.) I >> >> believe enclosing the above two lines as follows will fix the >> problem: if >> >> (session != null) { ((JPAProcessInstanceManager) >> ((ReteooWorkingMemory) >> >> session).getProcessInstanceManager()).clearProcessInstances(); >> >> ((JPAWorkItemManager) ((ReteooWorkingMemory) >> >> session).getWorkItemManager()).clearWorkItems(); } Also, in the >> 4th >> >> constructor of SingleSessionCommandService, after the session has >> been >> >> set, >> >> the following line needs to be added to ensure the session id is >> the same >> >> as >> >> the session info id: ((ReteooStatefulSession) >> this.session).setId( >> >> this.sessionInfo.getId() ); (This line is present at the end of >> the 3rd >> >> constructor.) It would be great if this fix could make it into the >> Drools >> >> 5.1 release. Thanks. >> _______________________________________________ >> >> rules-users mailing list [email protected] >> >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> _______________________________________________ rules-users >> mailing list >> >> [email protected] >> >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> _______________________________________________ rules-users >> mailing list >> >> [email protected] >> >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> >> >> ________________________________ >> >> View this message in context: Re: Problem with JPA session >> persistence in >> >> Drools Flow (5.0.1) >> >> Sent from the drools - user mailing list archive at Nabble.com. >> >> >> >> _______________________________________________ >> >> rules-users mailing list >> >> [email protected] >> >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> >> >> >> > >> > >> > >> > -- >> > - http://salaboy.wordpress.com >> > - http://www.jbug.com.ar >> > - Salatino "Salaboy" Mauricio - >> > _______________________________________________ >> > rules-users mailing list >> > [email protected] >> > https://lists.jboss.org/mailman/listinfo/rules-users >> > >> > >> >> -- >> View this message in context: >> > http://www.nabble.com/Problem-with-JPA-session-persistence-in-Drools-Flow-%285.0.1%29-tp24377236p24909794.html >> Sent from the drools - user mailing list archive at Nabble.com. >> >> _______________________________________________ >> rules-users mailing list >> [email protected] >> https://lists.jboss.org/mailman/listinfo/rules-users >> > > > > > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users > > -- View this message in context: http://www.nabble.com/Problem-with-JPA-session-persistence-in-Drools-Flow-%285.0.1%29-tp24377236p24957542.html Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
