1 2 Previous Next 16 Replies Latest reply on Jul 19, 2006 12:20 PM by Ronald van Kuijk

    Problem trying Class Tutorial

    falazar Novice

      I am attempting my first jbpm class by using the tutorial here:
      http://docs.jboss.org/jbpm/v3/gpd/completing.html

      But quickly hitting some roadblocks:
      The first image has a com.jbay.action package which I dont seem to have.
      and
      the org.jbpm.graph.def.ActionHandler doesnt appear to exist either.

      Do I need these extra resources, or am I supposed to be doing this in a different way altogether?

      James

        • 1. Re: Problem trying Class Tutorial
          Chris OBrien Novice

           

          "falazar" wrote:
          The first image has a com.jbay.action package which I dont seem to have.


          That's the package for where you want the class. It will get created when you click finish. The package name doesn't really matter.

          "falazar" wrote:
          the org.jbpm.graph.def.ActionHandler doesnt appear to exist either.


          Do you not have the jbpm.jar in your project's classpath?

          • 2. Re: Problem trying Class Tutorial
            falazar Novice

            I set the CLASSPATH to jbpm/src/resources/jbpm.jar
            in the terminal (Fedora Core 4) and restarted eclipse, but that didnt appear to have any effect.
            Is that the correct location of the jar?
            Do I need to set it within eclipse?

            James

            • 3. Re: Problem trying Class Tutorial
              Chris OBrien Novice

              That's now how you set the path in eclipse. You have to modify your project (Project menu -> Properties) and in there should be settings for build path /libraries/etc.

              You point to it through there.

              • 4. Re: Problem trying Class Tutorial
                falazar Novice

                Set the classpath and moved forward....
                The last part of it is throwing an error.... When running figure 4.8
                CastException error... but I dont know why

                15:30:49,146 [main] DEBUG GraphElement : event 'process-start' on 'ProcessDefinition(TestActionClass)' for 'Token(/)'
                15:30:49,149 [main] DEBUG GraphElement : event 'before-signal' on 'StartState(start)' for 'Token(/)'
                15:30:49,150 [main] DEBUG GraphElement : event 'node-leave' on 'StartState(start)' for 'Token(/)'
                15:30:49,151 [main] DEBUG GraphElement : event 'transition' on 'Transition(to_auction)' for 'Token(/)'
                15:30:49,152 [main] DEBUG GraphElement : executing action 'action[hello]'
                15:30:49,161 [main] ERROR GraphElement : action threw exception: com.jbay.action.HelloActionHandler
                java.lang.ClassCastException: com.jbay.action.HelloActionHandler
                at org.jbpm.graph.def.Action.execute(Action.java:122)
                at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:235)
                at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:212)
                at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:182)
                at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:166)
                at org.jbpm.graph.def.Transition.take(Transition.java:106)
                at org.jbpm.graph.def.Node.leave(Node.java:382)
                at org.jbpm.graph.node.StartState.leave(StartState.java:70)
                at org.jbpm.graph.exe.Token.signal(Token.java:174)
                at org.jbpm.graph.exe.Token.signal(Token.java:123)
                at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:217)
                at com.jbay.HelloTest.testProcess(HelloTest.java:26)
                at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
                at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
                at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
                at java.lang.reflect.Method.invoke(Method.java:585)
                at junit.framework.TestCase.runTest(TestCase.java:154)
                at junit.framework.TestCase.runBare(TestCase.java:127)
                at junit.framework.TestResult$1.protect(TestResult.java:106)
                at junit.framework.TestResult.runProtected(TestResult.java:124)
                at junit.framework.TestResult.run(TestResult.java:109)
                at junit.framework.TestCase.run(TestCase.java:118)
                at junit.framework.TestSuite.runTest(TestSuite.java:208)
                at junit.framework.TestSuite.run(TestSuite.java:203)
                at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:478)
                at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
                at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
                1

                • 5. Re: Problem trying Class Tutorial
                  Ronald van Kuijk Master

                  do you have some other jbpm jar/sar on the classpath?

                  • 6. Re: Problem trying Class Tutorial
                    falazar Novice

                    Only the Three TestJBPM ones that it included,
                    and the jBPM Library (3.1.1)

                    James Ratcliff

                    • 7. Re: Problem trying Class Tutorial
                      Ronald van Kuijk Master

                      sorry, I mistyped.... is there more then one com.jbay.action.HelloActionHandler on the classpath?

                      • 8. Re: Problem trying Class Tutorial
                        falazar Novice

                        It does not appear there is the HelloActionHandler in the path at all.. In eclipse I checked the path, and it is not there, but I cannot find out how to add it to the classpath their either.

                        James

                        • 9. Re: Problem trying Class Tutorial
                          Ronald van Kuijk Master

                          if you create a jbpm project in the gpd and a processdefinition, there is a src dir. The HelloActionHandler should go there

                          • 10. Re: Problem trying Class Tutorial
                            falazar Novice

                            There is a src/java in the project, and a src, if I put them in the plain src, it wont let me test, so they are in the src/java.

                            Getting confusing with the pictures in the Ch 4, cause they show in two different spots.

                            Attaching a screen shot of what I have right now, hopefully that is right... also shows part of the error.
                            http://www.falazar.com/ut/Screenshot-3.png

                            James[/img]

                            • 11. Re: Problem trying Class Tutorial
                              Chris OBrien Novice

                              I almost posted this yesterday, but I figured it was obvious, also your other screen shot showed the class implementing the ActionHandler interface, so I assumed it still did.

                              It needs to implement org.jbpm.graph.def.ActionHandler

                              • 12. Re: Problem trying Class Tutorial
                                Ronald van Kuijk Master

                                your class should extend ActionHandler. Because you forgot that, jBPM cannot cast your class to a generic ActionHandler and execute the method

                                • 13. Re: Problem trying Class Tutorial
                                  falazar Novice

                                  Hmm ok yes, Im not sure how that got messed up, fixed that part, but still getting another failure that I was getting sometimes yesterday as well.
                                  http://www.falazar.com/ut/Screenshot-4.png

                                  junit.framework.AssertionFailedError: The greeting variable should not exist
                                  at junit.framework.Assert.fail(Assert.java:47)
                                  at junit.framework.Assert.assertTrue(Assert.java:20)
                                  at junit.framework.Assert.assertNotNull(Assert.java:220)
                                  at com.jbay.action.HelloTest.testActionHandler(HelloTest.java:46)
                                  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
                                  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
                                  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
                                  at java.lang.reflect.Method.invoke(Method.java:585)
                                  at junit.framework.TestCase.runTest(TestCase.java:154)
                                  at junit.framework.TestCase.runBare(TestCase.java:127)
                                  at junit.framework.TestResult$1.protect(TestResult.java:106)
                                  at junit.framework.TestResult.runProtected(TestResult.java:124)
                                  at junit.framework.TestResult.run(TestResult.java:109)
                                  at junit.framework.TestCase.run(TestCase.java:118)
                                  at junit.framework.TestSuite.runTest(TestSuite.java:208)
                                  at junit.framework.TestSuite.run(TestSuite.java:203)
                                  at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:478)
                                  at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
                                  at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

                                  • 14. Re: Problem trying Class Tutorial
                                    Ronald van Kuijk Master

                                    I cannot make anything out of the screenshot....

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