In
UML models, a call event is an event that represents the receipt of a request
to invoke an operation. A transition with a call event initiates when the
called operation is invoked.
Before you begin
Before you can add a trigger to a transition,
you must have a state machine diagram open in the
Modeling perspective.
About this task
To add a call event to a transition:
Procedure
- Right-click a transition; then click .
- Complete one of the following steps:
- To create a new call event, click Create Call Event and
complete one of the following steps:
- To create a new call operation, click Create Operation,
type a name, and press Enter.
- To select an existing operation, click Select Existing Element,
and in the Select Element window, click an operation,
and click OK. Type a name and press Enter.
- To select an existing call event, click Select Existing
Element, and in the Select Element window,
click a call event, and click OK. Type a name and press
Enter.
Results
The call event is added to the transition in the diagram and in the
Project
Explorer view. You can view and modify details about the call event
in the
Properties view, on the Triggers page for the
selected transition.