Description Gregor Gisler-Merz 2014-11-06 08:19:06 EST

Hi Bob
Just had a talk with Antonio (our ProcessModeler Guru) with regards to the display of the message symbol in the MessageFlows.
There is a discrepancy to the spec. Currently all message symbols are shown equally in MessagFlows. The spec makes there a differentiation.
There is in the BPMN2 Spec 8.3.11 Message and page 375/376  some information to be found.
The attribute messageVisibleKind can be inititating, non initiating or absent (in this case in ProcessModeler we don’t show a message symbol at all).

Spec excerpt:
messageVisibleKind : MessageVisibleKind [0..1] an optional attribute that should be used only for Message Flow. It determines if an envelope decorator should be depicted and the kind of envelope to be depicted.
initiating - The envelope should not be shaded.
non_inititating - The envelope should be shaded.

In case initiating or non_initiating it would be best to not show the message symbol at all.
I have added BPMN2 file with all 3 varieties: initiating, non initiating and empty. I also have added the representation view in Process Modeler and BPMN2Modeler.