Skip expression on User Task

[hari]

Hi,

I see a property called "Skip expression" on a user task in eclipse. I could not see any information being available about it anywhere so I am requesting you here to please tell us more about it.

Thanks,
Hari.

[hari]

To add  to the above issue, the complete doesn't seem to work.
Below is the modified code as per your suggestion.  Also the other change is that I have added code to try to complete the task.

Did I miss  something again  ?
<code>
public void test() {
  HashMap<String,Object> mpvar = new HashMap<String,Object>();
  mpvar.put("fname", "Hari");
  mpvar.put("_ACTIVITI_SKIP_EXPRESSION_ENABLED", true);
  ProcessInstance processInstance = activitiRule.getRuntimeService().startProcessInstanceByKey("TestSkipExp",mpvar);
  System.out.println("STARTED PROCESS");
  System.out.println("=======================================================================");

  List<Task> tasks = activitiRule.getTaskService().createTaskQuery().taskAssignee("Hari").list();
  for(Task t:tasks){
   System.out.println(t.getName());
   try{
    activitiRule.getTaskService().complete(t.getId());
   }
   catch(Exception ex){
    ex.printStackTrace();
   }
  }
  System.out.println("END");
  System.out.println("====================================================================");

}
</code>

When I try to complete them, I see the below exception.

<code>
org.activiti.engine.ActivitiException: UserTask should not be signalled before complete
at org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior.signal(UserTaskActivityBehavior.java:146)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.signal(ExecutionEntity.java:407)
at org.activiti.engine.impl.persistence.entity.TaskEntity.complete(TaskEntity.java:201)
at org.activiti.engine.impl.cmd.CompleteTaskCmd.execute(CompleteTaskCmd.java:50)
at org.activiti.engine.impl.cmd.CompleteTaskCmd.execute(CompleteTaskCmd.java:24)
at org.activiti.engine.impl.cmd.NeedsActiveTaskCmd.execute(NeedsActiveTaskCmd.java:59)
at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:24)
at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:57)
at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:37)
at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:40)
at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:35)
at org.activiti.engine.impl.TaskServiceImpl.complete(TaskServiceImpl.java:175)
at org.activiti.MyUnitTest.test(MyUnitTest.java:34)
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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.activiti.engine.test.ActivitiRule$1.evaluate(ActivitiRule.java:126)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
</code>

[rhafner]

Hi Hari,

What version of Activiti are you running this test case on? I am able to run the test case on Activiti 6 successfully and have validated the behavior is correct by tweaking the test case as shown below. FWIW, I am running the test case from within the Activiti test suite using the SkipExpressionUserTaskTest.

  @Deployment
  public void test2() {
  HashMap<String,Object> mpvar = new HashMap<String,Object>();
  mpvar.put("fname", "Hari");
  mpvar.put("_ACTIVITI_SKIP_EXPRESSION_ENABLED", true);
  ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("TestSkipExp",mpvar);
  System.out.println("STARTED PROCESS");
  System.out.println("====================================================================================================");
  assertNotNull(processInstance);

  List<Task> tasks = taskService.createTaskQuery().taskAssignee("Hari").list();
  assertEquals(1, tasks.size());
  assertEquals("UT2", tasks.get(0).getTaskDefinitionKey());
  for(Task t:tasks){
   System.out.println(t.getTaskDefinitionKey() + " " + t.getName());
  }
 
  taskService.complete(tasks.get(0).getId());
  assertNull(runtimeService.createProcessInstanceQuery().processInstanceId(processInstance.getId()).singleResult());
 
  System.out.println("END");
  System.out.println("====================================================================================================");

}

thanks,
Rob