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BPMN 2 Issue: start event to exclusive gateways [message #896723] Thu, 19 July 2012 09:49 Go to next message
Eclipse UserFriend
Hi.

I've a doubt about the use of exclusive gateways.
I think I'm right when I say that it is possible connect a start event to an EXCLUSIVE gateway (regarding metamodel), but at that point of the execution, on what can one do a decision? At this point the decision can't be made using some input of user(human), it must be made based on process metadata or something, is it right?

My question is : In a real world application, does it make sense (to connect start event to exclusive gateway)

On the other hand, if in one application that it is not allowed, we have a metamodel violation or just some additional restriction


Thanks in advance.
Rui
Re: BPMN 2 Issue: start event to exclusive gateways [message #896770 is a reply to message #896723] Thu, 19 July 2012 12:28 Go to previous message
Eclipse UserFriend
Hi Rui,

The StartEvent may have one or more event definitions (a "trigger") that describe how the process is started (Message, Timer, Signal, etc.) The ExclusiveGateway then has access to that trigger information which can be used in the condition expression. So, yes it does make sense to allow a StartEvent to flow directly into an ExclusiveGateway.

HTH,
Bob
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