States
A state is a condition or situation during the life of an object during which it satisfies a condition, performs an activity, or waits for an event. They are rendered in State Diagrams.
Types
Simple States
Name - Name of the state.
Stereotypes - List of stereotypes applied to the state.
Entry-Action - Action to be invoked upon entry the state.
Do-Activity - Action to be invoked after the Entry Action has completed.
Exit-Action - Action to be invoked before the state is exited.
Internal Transitions - Actions that do not change the state of the object and therefore do not invoke the entry or exit actions.
Incoming - Transitions that allow entrance to this state.
Outgoing - Transitions that exit this state.
Composite States
Name - Name of the state.
Modifiers - List of options available to the composite state.
Concurrent - This option is unchecked for all composite states that are not concurrent states.
Stereotypes - List of stereotypes applied to the state.
Subvertices - Vertices contained by the state machine.
Entry-Action - Action to be invoked upon entry the state.
Do-Activity - Action to be invoked after the Entry Action has completed.
Exit-Action - Action to be invoked before the state is exited.
Internal Transitions - Actions that do not change the state of the object and therefore do not invoke the entry or exit actions.
Incoming - Transitions that allow entrance to this state.
Outgoing - Transitions that exit this state.
Other States
This category of states includes Initial, Final, Choice, Junction, Synch, and History States.
Name - Name of the state.
Stereotypes - List of stereotypes applied to the state.
Incoming - Transitions that allow entrance to this state. Initial states cannot have incoming transitions.
Outgoing - Transitions that exit this state. Final states cannot have outgoing transitions.
Transitions
Between States
Name - Name of the transition.
Stereotypes - List of stereotypes applied to the transition.
Trigger - Name of the event whose occurrence makes a transition eligible to fire.
Guard - Name of the boolean expression that must be satisfied in order for the transition to fire.
Effect - Name of an optional activity to be performed during the transition.
Source - The originating state of the transition.
Target - The destination state of the transition.
Actions, Triggers, and Guards
Actions and Activities
Name - Name of the action.
Modifiers - List of options available to the action.
Asynchronous
Stereotypes - List of stereotypes applied to the action.
Expression - Syntax that will be completed during the action.
Language - Indicates in which language the expression has been written. This can be anything, including plain English.
Trigger
Name - Name of the trigger.
Stereotypes - List of stereotypes applied to the trigger.
Parameters - List of variables that can be changed, passed or returned.
Guard
Note that entry and exit actions may not have guard conditions as they are invoked implicitly, not explicitly.
Name - Name of the guard.
Stereotypes - List of stereotypes applied to the guard.
Transition - The name of the owning transition.
Expression - A procedural expression that is executed if and when the transition fires
Language - Indicates in which language the expression has been written. This can be anything, including plain English.