Execution doesn't exist

[zaiteki]

Hello,

I rarely get following exception when running the activiti flow:

SEVERE: exception during timer execution
org.activiti.engine.ActivitiException: Error while evalutaing expression
        at org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:59)
        at org.activiti.engine.impl.bpmn.behavior.ServiceTaskExpressionActivityBehavior.execute(ServiceTaskExpressionActivityBehavior.java:45)
        at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:44)
        at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
…
Caused by: org.activiti.engine.impl.javax.el.ELException: org.activiti.engine.ActivitiException: execution 134401 doesn't exist
        at org.activiti.engine.impl.javax.el.BeanELResolver.invoke(BeanELResolver.java:481)
…
Caused by: org.activiti.engine.ActivitiException: execution 134401 doesn't exist
        at org.activiti.engine.impl.cmd.GetExecutionVariableCmd.execute(GetExecutionVariableCmd.java:52)
        at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
        at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)
        at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:42)
…
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

The exception is generated at following java code location:
<code lang="java">
  @Autowired
  private ProcessEngine engine;
…
List<ProcessInstance> processInstances = engine.getRuntimeService().createProcessInstanceQuery().list();
    for (ProcessInstance process : processInstances) {
      EntityIdentifier entityIdentifier = (EntityIdentifier) engine.getRuntimeService().getVariable(process.getId(), ENTITY_ID); //exception
      }       
    }
</code>

Generally the code and flow works perfectly but sometimes this error is thrown. It puzzles me since I expect query to return only active processes *unknw*

One more question regarding the roll-back functionality, considering following event handler method:
<code lang="java">
public void event(EntityIdentifier ei){
    db update statement with flush and all that stuff;
    activiti workflow variables update; //exception
}
</code>
Will the DB updates be rolled-back?

I've spent lots of time looking around and analyzing this issue *cray2* running out of ideas already.
Any kind of help will be highly appreciated!

[martin_grofcik]

Hi,

org.activiti.engine.ActivitiException: execution 134401 doesn't exist

Is it possible that process instances has ended between  query and get variable?

roll-back functionality

I do not know which event handler you mean.
Could you create jUnit test?

Regards
Martin

[zaiteki]

Hello,

I do not know which event handler you mean.

I meant the java code processing flow events, I called it event handler e.g.
<code>
<serviceTask id="Exited" name="Exited" activiti:expression="${events.exited(entityId)}"></serviceTask>
</code>

Is it possible that process instances has ended between query and get variable?

It shouldn't, it is an user task with a timer boundary event attached. The timer moves the flow to the "Exited" state, where it tries to update some variables and fails.

Regards,

[jbarrez]

Very strange. The error is thrown when the execution indeed is not in the db … so something is moving the execution forwards.

Do tyou hava an @Transactional around your logic? Otherwise there will be two transactions for the snippet of codeyou posted.

[abhishek1]

I am getting similar error: <code>org.activiti.engine.ActivitiObjectNotFoundException: execution 447505 doesn't exist </code>.

Could anyone clarify on this?

[jbarrez]

Not with that little amount of context. I can only tell you that execution 447505 is not there, but it was expected to be there.