June 2022
Beginner to intermediate
672 pages
17h 23m
Japanese
Content preview from Head Firstデザインパターン 第2版 ―頭とからだで覚えるデザインパターンの基本
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
you are here
245
7
章
Adapter
パターンと
Facade
パターン
Adapter
パターンの定義
Adapterパターンは、クラスのインタフェースをクライアントが
要求する別のインタフェースに変換する。アダプタは、インタ
フェースの互換性がないためにそのままでは連携できないクラ
スを連携させる。
例としてはカモ、七面鳥、
AC
電源アダプタだけで十分でしょう。現実に目を向け、
Adapter
パターンの正式な定義を確認しましょう。
Adapter
パターンでは、変換を行うアダプタを作成すると、互換性のないインタ
フェースを持つクライアントを使用できることを説明しました。
Adapter
パターンは、
実装されているインタフェースからクライアントを分離します。将来インタフェース
の変更が予想される場合、アダプタがその変更をカプセル化し、クライアントが異な
るインタフェースに対して操作する必要があるたびにクライアントを変更せずに済み
ます。
Adapter
パターンの実行時の動作については説明しているので、今度はクラス図を調
べましょう。
specificRequest()
Client
Adaptee
request()
<<interface>>
Target
request()
Adapter
Adapter
パターンでは、オブジェクトコンポジションを使い、異なるインタフェースでア
ダプティをラップするなど、優れた
OO
設計原則が随所に見られます。しかも、アダプティ
のどんなサブクラスに対してもアダプタを使用できるという利点もあります。 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.