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