Multiple instances issue in JBPM 6.0.1

[sudhakarang]

Hi All,

Created one BPMN with multiple instances through JBPM console. Please find the attachment has BPMN screen shot and BPMN.

By using below JAVA API code, trying to create a process for the BPMN which is created in JBPM Console.

RemoteRestRuntimeFactory restSessionFactory   = new RemoteRestRuntimeFactory("sudhakaran.multiple:sudhakaran_multiple_1:1.0", new URL("http://localhost:8080/jbpm-console/"), "admin", "admin");

  RuntimeEngine engine = restSessionFactory.newRuntimeEngine();

  KieSession ksession = engine.getKieSession();

Map<String, Object> params = new HashMap<String, Object>();

  List<String> list = new ArrayList<String>();

  list.add("krisv");

  list.add("john doe");

  list.add("superman");

  params.put("list", list);

  ksession.startProcess("com.sample.multipleinstance", params);

When starting the process, getting below exception.

org.kie.services.client.serialization.SerializationException: Unable to marshall JaxbCommandsRequest instance.

  at org.kie.services.client.serialization.JaxbSerializationProvider.serialize(JaxbSerializationProvider.java:101)

  at org.kie.services.client.api.command.AbstractRemoteCommandObject.executeRestCommand(AbstractRemoteCommandObject.java:310)

  at org.kie.services.client.api.command.AbstractRemoteCommandObject.execute(AbstractRemoteCommandObject.java:110)

  at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.startProcess(CommandBasedStatefulKnowledgeSession.java:232)

  at TestService.main(TestService.java:92)

Caused by: javax.xml.bind.MarshalException

- with linked exception:

[com.sun.istack.internal.SAXException2: class org.drools.core.xml.jaxb.util.JaxbListWrapper nor any of its super class is known to this context.

javax.xml.bind.JAXBException: class org.drools.core.xml.jaxb.util.JaxbListWrapper nor any of its super class is known to this context.]

  at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:311)

  at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:236)

  at javax.xml.bind.helpers.AbstractMarshallerImpl.marshal(AbstractMarshallerImpl.java:116)

  at org.kie.services.client.serialization.JaxbSerializationProvider.serialize(JaxbSerializationProvider.java:99)

  ... 4 more

Can any one help me how to proceed on this issue.

Thanks and Regards,

Sudhakaran G

[swiderski.maciej]

this is a known issue with 6.1.0 and lists/maps as process variables. Here you can find some workarounds for it. Another one would be to send string based variables and then as part of the process convert it into list.

P.S.

please use user forum as development one is not really monitored any more...

HTH

[sudhakarang]

Thanks Maciej Swiderski for your reply.

Can you please share how to send string based variables and then as part of the process convert it into list.

Thanks

Sudhakaran G

[swiderski.maciej]

just send comma separated string:

myVar=item1,item2,item3

and then in your process use script task that will get the myVar and split it:

List list = java.util.Arrays.asList(myVar.split(","))

kcontext.setVariable("myList", list);

HTH