The allStates operator is a state-machine–related OCL operation that returns all states defined for a class, including both simple and composite states. It is mainly used for model introspection, allowing you to query and work with the lifecycle or state machine associated with a class rather than its attribute data.

Returns names of all states in all state machines for this type.

Return Type

Collection(String)

Example:

Assume the Department class has a lifecycle (state machine) with the following states:

• Draft
• Active
• Suspended
• Closed

Department.allStates

Results:

A collection containing:

Draft, Active, Suspended, Closed