Section 14.8. Signals


14.8. Signals

You can use special icons for transitions to draw attention to transitions and transition behavior. This is called a transition-oriented view.

In this view, a trigger is represented with a receive signal icon and transition behavior is represented with a send signal icon. Figure 14-21 shows how Figure 14-6 can be drawn in this alternate notation. It additionally uses the choice pseudostate introduced previously in "Advanced Pseudostates."

Figure 14-21. The bottom diagram draws transitions and transition behavior as receive and send signals


The main purpose of this notation is to visually emphasize sending and receiving signals. Although both diagrams say the same thing, the version with the signal icons focuses on the transitions and, in this case, makes the diagram more readable.




Learning UML 2.0
Learning UML 2.0
ISBN: 0596009828
EAN: 2147483647
Year: 2007
Pages: 175

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