topic Re: Behaviour Parallel Gateway without Join in Alfresco Archive

Behaviour Parallel Gateway without Join

rodolfobarbeiro — Tue, 13 Dec 2011 19:08:33 GMT

See the BPMN diagram in attachment:[attachment=0]parallel_gateway.png[/attachment]Note that the execution flow is divided by a parallel gateway and each path finish in a "EndEvent."What is the execution behavior of this flow?Only runs the "Service Task 1"?Only run the "Service Task 2" and "Service T

Re: Behaviour Parallel Gateway without Join

ronald_van_kuij — Tue, 13 Dec 2011 19:23:38 GMT

Why don't you give it a try 😉

Re: Behaviour Parallel Gateway without Join

rodolfobarbeiro — Tue, 13 Dec 2011 20:19:19 GMT

I tested!

All tasks are executed.

Re: Behaviour Parallel Gateway without Join

trademak — Sat, 17 Dec 2011 09:58:47 GMT

This is not really valid BPMN.
When you are using a parallel gateway to start multiple sequence flows I would also expect a parallel gateway to join these sequence flows.
I your example all tasks are executed because each sequence flow runs in its own process execution scope.

Best regards,

Re: Behaviour Parallel Gateway without Join

andregs — Fri, 27 Jan 2012 19:24:44 GMT

According to BPMN Method & Style (Bruce Silver, page 29):

Each outgoing path thus represents a parallel (concurrent) thread of process activity. Parallel paths may be joined downstream or may lead to separate end events. Each parallel path must reach an end event in order for the process or subprocess complete.

Re: Behaviour Parallel Gateway without Join

trademak — Mon, 30 Jan 2012 12:14:29 GMT

Hi,

Right, you CAN do it like this, but then all tasks are executed and the two execution paths eventually end in their own end event.

Best regard,