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
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.
132
Column
パッケージ製品の拡張性
ERPなどのパッケージ製品は、顧客ごとの固有要件に対応するため、柔軟
に機能を拡張できることが求められます。パッケージ製品の標準の振る舞い
を変更することをカスタマイズと呼び、その方法は図3.4.9のように分類す
ることができます。
パッケージ製品の導入にあたっては、アドオン開発をせずに業務をパッ
ケージの標準機能へ合わせるFit to Standardというやり方が理想型と言われ
ています。どうしてもアドオン開発による拡張が避けられない場合もありま
すが、モディフィケーションの方法はリスクが高いので注意が必要です。製
品本体のソースコードに手を入れるため、言ってしまえばやりたいことはほ
ぼ無制限に実現することができ、拡張の自由度が非常に高い方法ではありま
す。しかしながら、修正によってパッケージ製品のその他の部分に思わぬ副
作用を生んでしまうリスクもあります。また、製品をバージョンアップする
際にはアドオン開発部分を修正しないと正常に動かなくなることもあり、影
響範囲調査だけでも膨大な工数がかかることもあります。
このような事態を避けるためにも、アドオン開発が必要な場合はプラグイ
ンの方法を取ることが強く推奨されます。もしパッケージ製品を開発する立
場となったら、マイクロカーネルアーキテクチャを採用して、プラグイン方
式により柔軟かつ安全に拡張を行えるようにしましょう。
代表的なERP製品であるSAPでも、モディフィケーション方式によるアド
オン開発がバージョンアップを困難にすることが、かねて問題視されていま ...
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.