CODEWITHSUNDEEP
umlsequence-diagram
user9866972
user9866972

Reputation: 11

Sequence diagram. Can actor be in OPT?

I want that my agent “Cittadino” entry in OPT only if he is logged.

Is it corret my diagram? Or actor must be outside OPT?

Thanks so much

https://i.sstatic.net/MIpeZ.jpg

Upvotes: 0

Views: 288

Answers (1)

Ister
Ister

Reputation: 6318

Yes, it is correct in terms of UML compliance for opt part.

Let me question the existence of the whole opt in the first place. As I understand you're showing some behaviour and to perform that behaviour the actor has to be (earlier) logged into the system. If yes, make that a constraint of a behaviour in which case you don't have to depict that in the diagram of the behaviour itself at all.

Also I have doubts about the alt part. If only internal processing (arrows 1.1.1. and 1.1.2.) depend on conditions, only they should be inside opt. Arrows 1.1. and 1.1.3. have stay outside of it. In general your arrows should not cross the borders of an expansion region unless you really know what you're doing.

Upvotes: 1

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