Hello, can you explore my diagram and explain, why all subprocess tokens aren’t terminating? By my undertanding they should vanish when a == 3. It seems to be that terminate event kills only last token and not the first two.
test.bpmn (7.5 KB)
test.bpmn (7.5 KB)
Hello @Mikhail.Savelov ,
the Terminate End Event only works inside the scope it lives, here the Event-based subprocess. What you could do now is this:
Or even easier:
Hope this helps
Jonathan
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Thank you, but I did not understand this example. I constructed my test to clarify behaviour of terminate event.
Terminate event kills tokens inside its scope. So I expect this:
- 5 sec: first token is going through the top path and stops at user task
- 10 sec: second token is going through the top path and stops at user task
- 15 sec: third token is going through the bottom path and terminate-event kills ALL three tokens.
But it only kills third token, and everything after it. First two tokens remains untouched. I simply want to understand, why is it happening? Shouldn’t Terminate-event clean my subprocess entirely?
Hello @Mikhail.Savelov ,
every time the timer is triggered, a new instance of your event-based subprocess is created (behaviour of a Start Event). Inside this instance, all tokens will be consumed by the Terminate End Event.
You can see this on the bottom left of your screenshot, where the event-based subprocess is annotated with a “2”. So, 2 instances are active, 1 was ended.
Jonathan
It makes sense now, thank you.
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This may be unjustified, but I don’t trust conditional events (conditions might be transient and not detected by the engine) and prefer explicit event firing. Hence, in the solution of @jonathan.lukas, I’d made the following changes:
- In the 5-secs subprocess, insert a condition (XOR) with “a==3?”. If yes, then throw an error or an escalation event.
- In the bottom right subprocess, replace the conditional start event with the error or escalation start event.
Has anybody used conditional events extensively? What is your experience?