July 2001
Beginner to intermediate
368 pages
6h 52m
English
book
Design Patterns Explained: A New Perspective on Object-Oriented Design
by Alan Shalloway, James R. Trott
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Overview
This chapter concludes the e-tailing case study discussed thus far in Chapters 14–19.
Now that I have discussed an entire set of individual patterns, it is time to step back to look at one of the biggest problems in software development: handling variation within the problem domain. Design patterns can help analysts identify and organize variations successfully.
In this chapter,
I consider the problem of variation in the real world.
I look at a portion of the e-tailing case study that represents significant problems of variation. In the process of solving this problem, I develop the Analysis Matrix, a simple variant on decision tables that I have found helpful to understand and coordinate variation in concepts. There is a parallel between ...