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How to show alternative Flows in Sequence Diagram?

 
Peter Lee
Greenhorn
Posts: 24
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Hi all,
As subject.
How to show alternative flows like "Customer not logged in" in sequence diagram? A separate diagram or use "alt" operator?
Thanks.
Peter
 
Ajith Kallambella
Sheriff
Posts: 5782
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I think what you are looking for is a conditional execution. You can use guarded conditions do this.
[customer not logged in]
----------------------------------> invoke login

Hope that helps,
 
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