Transition
A transition leaving a state defines the response of an object in the state to the occurrence of an event. In general, a transition has an event trigger, a guard condition, an effect, and a target state. Table 7-2 shows kinds of transitions and implicit effects invoked by transitions.
| Transition Kind | Description | Syntax |
|---|---|---|
| entry transition | The specification of an entry activity that is executed when a state is entered | entry/ activity |
| exit transition | The specification of an exit activity that is executed when a state is exited | exit/ activity |
| external transition | A response to an event that causes a change of state or a self-transition, together with a specified effect. It may also cause the execution ... |
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