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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図の網掛け❶部分の構造はStrategyパターンです。Strategyパター
ンでは、インターフェースを導入することで具体的なアルゴリズムをク
ライアントから切り離します。クライアントが抽象にのみ依存し実装の
詳細には左右されなくすることで、アルゴリズムの交換可能性をもたら
すのがStrategyパターンのポイントです。
また、この例ではクライアントである
OvertimePayCalculator
から
OvertimePayPolicy
インターフェースの実装オブジェクトを手に入れる
ため、
OvertimePayPolicyFactory
クラスの
of
メソッドを呼び出してい
ます（図の網掛け❷部分）。これは、具体的なオブジェクト生成方法を
抽象化してクライアントから切り離すFactory Methodパターンを適用
した設計です。
さらにもう一つ。注文を登録するユースケースの例では、注文コント
ローラから見て注文登録サービスの背後に存在するオブジェクトは隠蔽
されているという話をしました。このような構造をFacadeパターンと
言います。モジュールを構成する一つ一つのコンポーネントにクライア
ントから直接アクセスするとモジュール間の結合度が上がってしまうた
め、それを避けるためにFacadeを経由してモジュールの提供する機能
を利用します（facadeは建築物の正面部分を意味するフランス語です）。
このように、SOLID原則に従った設計を行うために定石として頻繁
に使用するデザインパターンがあるので、押さえておく必要があるで ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.