April 2022
Beginner to intermediate
344 pages
9h 32m
Japanese
Content preview from はじめての設計をやり抜くための本 第2版 概念モデリングからアプリケーション、データベース、アーキテクチャ設計、アジャイル開発まで
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.
198
導
入
編
1
設
計
編
ア
キ
テ
ク
チ
ャ
編
2
3
4
5
6
7
4
ビジネスロジックプログラム設計
ビジネスロジックは、ユースケース記述やビジネスルールに書かれた業務
に関するシステムの処理です。業務に関する処理という意味で、ドメインロ
ジックと呼んだりもします。
ビジネスロジックのプログラミング方法には、いくつかのパターンがあり
ます。ここでは、マーチン・ファウラー氏の著書『Patterns Of Enterprise
Application Architecture
注
4
-
1
』からTransactionScriptとDomainModelを
紹介します。
TransactionScript
パターン
TransactionScriptでは、ビジネスロジックをServiceクラスのメソッドに
します。Serviceクラスは、何らかの適当な業務単位に作成されるクラスで
す。例えば、注文関連のビジネスロジックを提供するOrderServiceのよう
になります。ユースケース単位に作成してもかまいません。Serviceクラス
は、ビジネスロジックのメソッドを複数持つことになります。例えば、
OrderServiceにはorderやlistOrderや cancelOrderなどのメソッドがあり
ます。このTransactionScriptの特徴は、ドメインの情報がエンティティと
TransactionScriptに分散されることです。オブジェクト指向では、データ
と処理を1つのクラスで管理してカプセル化するのが普通です。T ...
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.