Event dialog box

Events

An event is a specification of a significant occurrence that has a location in time and space. An instance of an event can lead to the activation of a behavioral feature in an object.

An event can be either an occurrence of a signal, a message occurrence or a time or change expression occurrence.

The "Event" dialog box contains four tabs - "Properties", "Notes", "Tagged values" and "Stereotypes". For information on these standard dialog box tabs, please see "Standard dialog box tabs".

The "Properties" tab of the "Event" dialog box

The "Properties" tab of the "Event" dialog box is used to define values for an event.

The "Properties" screen of the "Event" dialog box

Key:

· "Name": This is the name of the event.

· "Event expression": This is an expression which initiates the event. It can be a time expression, or a triggering condition, and may contain parameter values in the case of operation call events, and so on.

· "Kind of event": This defines the nature of the event (Time, Signal occurrence, and so on).

· "Called operation 1": This is a direct link to an operation in the case of a call event.

· "Instantiated signal": This is the signal from which the event is an occurrence.