Creation of an InterfaceUsage triggers PortUsage creation

[amontagne]

Goodday Syson Team

In the GV, if I create 2 parts with a port each and add an interface in between the ports, extra port usages are created in the model (linked to my ports by a feature chain I believe).
This behavior (visible on the screenshot) was introduced in #2003 during the rework of the edge tools in MetamodelMutationElementService.addConnectorEnd().

Is this an intented behavior ? I'm not yet sure, but I don't think this causes any issues on our side, I am just being curious.

Regards
Anne-Lore

[AxelRICHARD]

Hello,

Yes it is intended. Our interpretation of an InterfaceUsage (chapter 7.14 Interfaces of the SysMLv2 specification) is that it should come with ends (most of the time it is a binary connection so it comes with two ends). Those ends should be PortUsages. Then those ends should subset existing PortUsages (in your case port1Out and port1In).

If you think the creation of an InterfaceUsage between two existing PortUsage should produce a different result, please let me know!

Regards,

[amontagne]

I get it!
Thanks