These are flashcards an notes made by students on topics like 'state', 'behavior' and 'transition', originating from:

- Michael Jesse Chonoles
ISBN-10 0128096403 ISBN-13 9780128096406
1335 Flashcards & Notes
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Study Cards on state, behavior, transition

How do we model a transition?
By a directed line (an arrow) from the starting state to the ending state.
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Each transition involves exactly ........ State(s)
Each transition involves exactly two states, though the starting and ending states may be the same
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What is a Vertex?
Any nontransition element that a transition can enter or leave
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While an object is in a state, it also can be...
Busy
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What happens if there is more than one transition into a state?
When there is more than one transition into a state, they all take the entry/behavior after they execute their transition-specific behavior.


It is not possible to bypass the common behavior indicated by the entry/behavior.
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What is the majos use of an entr/behavior?
to identify and specify the common behavior needed to set up or initialize the state, as it is executed on of any of the ways in.

For example:
entry/behavior is often used to initialize state attributes. If you use the entry/behavior in this way, you will need to:

(1) check that it belongs on all entry transitions and

(2) remove the behavior from the transitions (you do not want them to execute twice).
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When is a state complete?
As soon as a state finishes its entry/behavior, if there no do/activity for the state, the state is complete
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Which format does a internal transition follows and where is it placed?
An internal transition follows the format of a transition [event (guard)/behavior] but does not have a start or end state.

It is placed inside the body of the state, sometimes in a separate compartment
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What are internal transitions in this diagram?
The two lines at the bottom of the state represent internal transitions
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