How can i get the execution pointer in a process?

[sameeh.harfoush]

Hello

I need to know the position of the execution in the workflow.

As the workflow process is executing, I need to query the process instance to know what is being currently executed

Can I do that, any examples?

Thanks

[swiderski.maciej]

Hi,

you can get that information by invoking findActiveActivityNames on your process instance.

Next you can use the names returned to get execution objects by executing findActiveExecutionIn(activityName) again on your process instance.

Cheers,

Maciej

[sameeh.harfoush]

Hello Maciej,

Thank you for the reply,

I am executing processInstance.findActiveActivityNames() while executing my workflow tasks and jobs,

on every call of findActiveActivityNames is returning only the name of the first Task in my workflow throughout all my workflow execution

any idea why?

thank you

[swiderski.maciej]

Hi,

make sure that if you signal your execution to move forward you need to take the processInstance object that is returned by that method. Otherwise you will work on old reference.

If you are working with tasks you most likely need to run following method after you complete your task:

procesInstance = executionService.findProcessInstanceById(processInstance.getId());

And after that you invoke findActiveActivityNames and you should get correct results.

Cheers,

Maciej

[sameeh.harfoush]

it worked

Thank you

Do you have by any chance a link to good tutorial on how to query JPBM 4?

[sameeh.harfoush]

Is there a way to get the type of execution the execution pointer is on?

i need to know if the execution is on a Task, state, decision, mail...etc

Thanks

[swiderski.maciej]

you could do that by casting you active execution instance to ExecutionImpl and then use method getActivity().getType().

Cheers

Maciej

[sameeh.harfoush]

ok

here is what i did

((ExecutionImpl)pi.findActiveExecutionIn(pi.findActiveActivityNames().iterator().next())).getActivity().getName()

where "pi" is my process instance

i am getting the below exception

### EXCEPTION ###########################################
15:16:35,000 SEV   | [BaseJbpmTestCase] TEST THROWS EXCEPTION: no environment to get org.jbpm.pvm.internal.session.RepositorySession
org.jbpm.api.JbpmException: no environment to get org.jbpm.pvm.internal.session.RepositorySession
    at org.jbpm.pvm.internal.env.EnvironmentImpl.getFromCurrent(EnvironmentImpl.java:197)
    at org.jbpm.pvm.internal.env.EnvironmentImpl.getFromCurrent(EnvironmentImpl.java:190)
    at org.jbpm.pvm.internal.model.ExecutionImpl.getProcessDefinition(ExecutionImpl.java:1121)
    at org.jbpm.pvm.internal.model.ExecutionImpl.getActivity(ExecutionImpl.java:1143)
    at com.roxana.test.jpdl.EmployeeTimesheetTest.executeTransitionInTask(EmployeeTimesheetTest.java:169)
    at com.roxana.test.jpdl.EmployeeTimesheetTest.testManagerRejectTimesheet(EmployeeTimesheetTest.java:115)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at junit.framework.TestCase.runTest(TestCase.java:164)
    at org.jbpm.test.BaseJbpmTestCase.runTest(BaseJbpmTestCase.java:80)
    at junit.framework.TestCase.runBare(TestCase.java:130)
    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:120)
    at junit.framework.TestSuite.runTest(TestSuite.java:230)
    at junit.framework.TestSuite.run(TestSuite.java:225)
    at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
### EXCEPTION ###########################################
15:16:35,000 SEV   | [BaseJbpmTestCase]

i couldnt find ExecutionImpl in the JPBM API docs, i had to check it from the source

thanks again

[swiderski.maciej]

could you post your unit test that fails?!