5 Replies Latest reply on Aug 3, 2009 12:11 PM by benitojuarez

jbpm beginner questions

benitojuarez Aug 3, 2009 10:22 AM

Hello,

i'm just starting with jbpm and got some sticky questions:

This method starts a new process instance.

@CreateProcess(definition="supply")
    public void initSupplyProcess()
    {
        statusMessages.add("initSupplyProcess");
    }

I think it works, because a db entry is created. But how can i get a handle on it? Is the new created instance somewhere in the contexts?

second: i tried the example from the seam documentation. there is a list pooledTaskInstanceList used (presumably a datamodel from a seam bean). In my case the list is empty even after i created the process instance. Is there some config required?

thx4help
BJ

1. Re: jbpm beginner questions

benitojuarez Aug 3, 2009 10:58 AM (in response to benitojuarez)

Another Problem:

this method:

    public void test()
    {
      log.info("test(): start");
      JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance();
              
      log.info("test(): get context");
      JbpmContext jbpmContext = jbpmConfiguration.getCurrentJbpmContext();
          
          log.debug("JbpmContext initialized successfully #0",jbpmContext);
          List tasks = jbpmContext.getTaskList();
          
          log.info("test() Tasks: #0 for actor:#1",tasks,jbpmContext.getActorId());
    }

throws the following exeption:

10:51:52,116 INFO  [TaskListBean] test(): start
10:51:52,116 INFO  [TaskListBean] test(): get context
10:51:52,116 ERROR [TxPolicy] javax.ejb.EJBTransactionRolledbackException
10:51:54,991 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/jboss-seam-rss.jar/META-INF/seam-rss.taglib.xml
10:51:54,991 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/jboss-seam-mail.jar/META-INF/seam-mail.taglib.xml
10:51:54,991 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/jboss-seam-ui.jar/META-INF/s.taglib.xml
10:51:54,991 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/jsf-facelets.jar/META-INF/jsf-core.taglib.xml
10:51:55,007 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/jsf-facelets.jar/META-INF/jsf-html.taglib.xml
10:51:55,007 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/jsf-facelets.jar/META-INF/jsf-ui.taglib.xml
10:51:55,007 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/jsf-facelets.jar/META-INF/jstl-core.taglib.xml
10:51:55,007 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/jsf-facelets.jar/META-INF/jstl-fn.taglib.xml
10:51:55,022 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/jboss-seam-excel.jar/META-INF/seam-excel.taglib.xml
10:51:55,022 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/jboss-seam-pdf.jar/META-INF/seam-pdf.taglib.xml
10:51:55,022 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/richfaces-ui.jar/META-INF/a4j.taglib.xml
10:51:55,022 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/richfaces-ui.jar/META-INF/ajax4jsf.taglib.xml
10:51:55,038 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/richfaces-ui.jar/META-INF/jsp.taglib.xml
10:51:55,038 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/richfaces-ui.jar/META-INF/rich.taglib.xml
10:51:55,038 INFO  [compiler] Added Library from: vfszip:/C:/Program Files/jboss-5.0.1.GA/server/default/deploy/Test-Workflow.ear/Test-Workflow.war/WEB-INF/lib/richfaces-ui.jar/META-INF/richfaces.taglib.xml

the exception message isnt very useful.
what could it mean?

2. Re: jbpm beginner questions

cash1981 Aug 3, 2009 11:15 AM (in response to benitojuarez)

Perhaps you should do a try catch and write e.printStackTrace to see the problem.
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3. Re: jbpm beginner questions

benitojuarez Aug 3, 2009 11:41 AM (in response to benitojuarez)
you're right, the real exception wasn't shown. It was a null pointer!

JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance(); JbpmContext jbpmContext = jbpmConfiguration.getCurrentJbpmContext();

jbpmContext was null. Whats leads to the question, how to create a current jbpm context.

thx
BJ
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4. Re: jbpm beginner questions

cash1981 Aug 3, 2009 11:50 AM (in response to benitojuarez)

Maybe like this?

JbpmContext jbpmContext = JbpmConfiguration.getInstance().createJbpmContext();
               try {
                    //do something
               } finally {
                    jbpmContext.close();
               }

5. Re: jbpm beginner questions

benitojuarez Aug 3, 2009 12:11 PM (in response to benitojuarez)

yes, i tried this in the authenticator-bean to set the jbpm context (and its actor-id) at the start of the session. But some clicks away the context seems to be gone.
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