In sequence diagrams, a guard condition is created automatically
and appears in edit mode when you create a combined fragment. You
can also manually add a guard condition in an interaction operand
that does not have an existing guard condition.
To add a guard condition in an interaction operand:
- Open a sequence diagram that contains at least
one combined fragment.
- In the interaction frame, right-click an interaction
operand that does not have a guard condition; then click .
Note: In a loop combined fragment, you can
edit the guard condition using the textual syntax [ ‘(‘
<minint> [, <maxint> ] ’)’ ], where minit and maxint are
non-negative integers, and state the minimum and maximum number
of times that a loop can occur.