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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composite state
A state that contains one or more regions, each containing one or more direct substates.
See also complex transition, orthogonal region, orthogonal state, region, simple state, state.
Semantics
A composite state is a state with substates. A composite state can be decomposed, using and-relationships, into one or more regions, each of which is decomposed, using or-relationships, into one or more mutually exclusive direct substates. If a composite state is active, exactly one direct substate in each of its regions is active. The net effect is an and-or tree of active states. Each state machine has a top-level state, which is a composite state.
A composite state with exactly one region is a nonorthogonal state. If it is active, exactly ...
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