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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19.5. Creating a NextGen POS DCD
Identify Software Classes and Illustrate Them
The first step in the creation of DCDs as part of the solution model is to identify those classes that participate in the software solution. These can be found by scanning all the interaction diagrams and listing the classes mentioned.
For the POS application, these are:
| Register | Sale |
| ProductCatalog | ProductSpecification |
| Store | SalesLineItem |
| Payment |
The next step is to draw a class diagram for these classes and include the attributes previously identified in the Domain Model that are also used in the design (see Figure 19.3).
Figure 19.3. Software classes in the application.
Note that some of the concepts in the Domain Model, such as Cashier, are not present in the design. ...
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