July 2001
Intermediate to advanced
656 pages
15h 51m
English
book
Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and the Unified Process, Second Edition
by Craig Larman
Content preview from Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and the Unified Process, Second Edition
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17.4. Object Design: makeNewSale
The makeNewSale system operation occurs when a cashier requests to start a new sale, after a customer has arrived with things to buy. The use case may have been sufficient to decide what was necessary, but for this case study we wrote contracts for all the system events, for explanation and completeness.
Contract CO1: makeNewSale
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Choosing the Controller Class
Our first design choice involves choosing the controller for the system operation message enterItem. By the Controller ...
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