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use_case_driven_object_modeling_with_uml_theory_and_practice.pdf
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详细说明： 用例驱动开发的实践性很强的书，英文版。 Doug Rosenberg and Matt Stephens Use Case Driven Object Modeling with UML Theory and Practice The difference between “theory” and “practice” is that in theory there is no difference between theory and practice, but in practice, there is. Do ug has been using this phrase to open each and every training class for so long now that he’s forgotten where he first heard it. Matt did some research and found that it’s commonly credited to a Jan L. A. van de Snepscheut, who, in addition to having a wonderful name, was quite a distinguished professor at Caltech. 4 Matt also found the quote attributed to Yogi Berra, who said, “In theory there is no differ- ence between theory and practice. In practice there is.”5 This makes us wonder if Professor Snepscheut might have been a baseball fan, or if Yogi made a practice of attending lectures at Caltech in the off-season, but no matter—they were both right. Regardless of who said it first, we like to apply this statement to UML modeling, because, to be blunt, UML is way too big. A project trying to ingest all of UML into its working practices resembles a python that has just swallowed a pig. It’s going to take an awfully long time to digest, and your project probably can’t afford it. The Unified Modeling Language User Guide by Grady Booch, James Rumbaugh, and Ivar Jacobson (Addison-Wesley, 1998) tells us that “you can do 80% of your modeling with 20% of the UML” somewhere after page 400. 6 They would have saved the industry many millions (bil- lions?) of dollars and horrific cases of analysis paralysis (see the upcoming sidebar titled “The Mysterious Case of Analysis Paralysis”) if they had said that in the Introduction, but they did- n’t. To compound the felony, they never tell us which 20% of UML is the useful part. Most people that we meet usually want to apply UML in the up-front stages of their proj- ect. And most of them usually want to start their analysis process with use cases. So, in our search for the “minimal, yet sufficient” core subset of UML, we focus on the question, How do you get from use cases to code? So, in theory, everything in the UML is useful, but in practice, a whole lot of people and projects need to know how to drive an OO software design from use cases. And they also need to know which diagrams from the UML directly help to accomplish this. This book explains the minimalist, core subset of UML and the thought process behind using it to drive OO software designs from use cases (collectively referred to as ICONIX Process), with an eye toward the practical as opposed to the theoretical. We hope the journey will be both informative and entertaining. ...展开收缩
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