July 2004
Intermediate to advanced
752 pages
35h 59m
English
book
Unified Modeling Language Reference Manual, The, Second Edition
by James Rumbaugh, Ivar Jacobson, Grady Booch
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pseudostate
A vertex in a state machine that has the form of a state but has special behavior.
Semantics
A pseudostate is a transient state that structures the details of a transition. When a pseudostate is active, a state machine has not completed its run-to-completion step and will not process events. Pseudostates are used to chain transition segments, and a transition to one implies a further automatic transition to another state without requiring an event.
Pseudostates include choice, entry point, exit point, fork, history state, initial state, join, junction, and terminate.
A final state is not a pseudostate. It may remain active when a state machine has completed its run-to-completion step, but it has restrictions on the transitions that ...
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