topic Re: Count active process instances (no matter which process definition) in Alfresco Archive

Count active process instances (no matter which process definition)

mgryszko — Fri, 26 Jul 2013 10:52:47 GMT

Is it possible to issue a query that will return a count of all process instances that are being executed?I tried with:runtimeService.createExecutionQuery().count()runtimeService.createProcessInstanceQuery().count()‍‍‍‍but I get always 0 as result, even if I know that at least one process is being e

Re: Count active process instances (no matter which process definition)

fellowtom — Mon, 29 Jul 2013 11:24:01 GMT

Hi mgryszko,

I'm pretty new to activiti but I had a similar problem. I solved it by queuing with:


HistoryService historyService = processEngine.getHistoryService();
List<HistoricProcessInstance> hpiList =
    historyService.createHistoricProcessInstanceQuery().unfinished().list();

With this list you should get all the process instances which did not reached the end state yet. I used it to restart all my unfinished jobs.
I hope this is correct and helps you.

With kind regards,

FellowTom

Re: Count active process instances (no matter which process definition)

trademak — Tue, 30 Jul 2013 09:54:35 GMT

The process instance query should be okay. But of course when the message is still being handled asynchronous the process instance could not be started yet. So you would need to implement a bit of polling logic to see when the process instance has been started. You can use the process instance query for that.

Best regards,