July 2024
Beginner to intermediate
272 pages
5h 40m
Japanese
Content preview from アーキテクトの教科書 価値を生むソフトウェアのアーキテクチャ構築
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154
合に「仮払金を精算する」のユースケースが実行されることを表現して
いますが、「経費精算を申請する」のユースケース記述の中でその条件
や処理を記述すれば通常は十分です。
⹅
図4.2.1
ユースケース図（汎化・包含・拡張）
汎化
包含
拡張
申請者
経費精算を申請する
出張旅費精算を
申請する
交際費精算を
申請する
拡張点
仮払い済みの事前申請がある
仮払金を精算する
ワークフローを
開始する
<<include>>
<<extend>>
ユースケース記述
ユースケースモデルの中でもとりわけ重要なのは、個々のユースケー
スに対する振る舞い要求を仕様としてまとめたユースケース記述です。
アクターはシステムを利用して何らかの目的を達成するためにユース
ケースを実行します。ユースケースにおいては、アクターが要求を出し
システムがそれに応答するという一連のやり取り、すなわち相互作用が
肝となります。一連のやり取りが首尾よく進む成功シナリオや、途中で
何か問題が生じる例外シナリオなど、状況に応じた複数のシナリオが考
えられます。ユースケース記述は、定型のフォーマットを用いて、これ
らのシナリオを仕様として記述するものです。
図4.2.2は、第3章の経費精算のケーススタディを題材としたユース
ケース記述の例です。
155
4
⹅
図4.2.2
ユースケース記述の例 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.