XOR constraint between associations

[elhamlaoui]

Hi,
I have been trying to find how to add an XOR constraint beteween two associations in MD but with no success.
Any ideas how could i do it

Thanks in advance

[saulius_p]

Hello,

Please find attached screenshot and project file showing how to use xor constraint between associations.

XOR.png

Please let us know if you have any more questions or issues

[elhamlaoui]

Hi,
Thanks a lot, the xor element in the palette was hidden at first

[jessica.m.reinert@nasa.gov]

Hello,

Please find attached screenshot and project file showing how to use xor constraint between associations.

XOR.png

Please let us know if you have any more questions or issues

Should the equivalent be possible with generalizations? If so, how do I make the xor element show up in the palette?

Thanks in advance.

Jessica

[saulius_p]

Hello,

Yes. Please find image explaining things. Hope it is helpful.

XOR.png

[leon.mcginnis@gatech.edu]

Where is the constraint link menu item in MagicDraw 18.5/SysML? The example is fine, but I can't locate the link, so I can't apply the xor constraint to two associations.

[fahad]

It seems the XOR Constraint is only available when using UML Elements.
Is there a workaround to get this to work in SysML/UAF-P diagrams?

[martin.kortwinkel@airbus.com]

The constraint element, shown in Saulius screenshot isn't in my Cameo diagram tool palette in section Common. I selected Full Featured perspective.
The Constraint element in the Common tool palette can only be attached to elements but not with a relationship to two other relations like associations.
The only way to model an XOR between two associations is to use SysML::ConstraintBlock with Dependency to the associations (see screenshot).