architecture | #iOS | #Android ファショ通

「MVVM」あたりを調べていると「Presentation Model」という言葉がやたら目につくので調べる。

マーチン・ファウラーさんがつぶやいていました。7年前。

@HerberthAmaral MVVM is the Microsoft's world's name for the same pattern as Presentation Model. I haven't updated the article since.

— Martin Fowler (@martinfowler) January 20, 2012

MVVM is the Microsoft's world's name for the same pattern as Presentation Model. I haven't updated the article since.

マイクロソフトの「MVVM」パターンは「Presentation Model」と同じなので、記事は更新していません。

👉 Martin Fowler on Twitter: "@HerberthAmaral MVVM is the Microsoft's world's name for the same pattern as Presentation Model. I haven't updated the article since." / Twitter

それぞれのソースを探す。

Presentation Model (Martin Fowler, 2004)

Represent the state and behavior of the presentation independently of the GUI controls used in the interface

👉 Presentation Model

MVVM (Microsoft, 2005)

Model/View/ViewModel is a variation of Model/View/Controller (MVC) that is tailored for modern UI development platforms where the View is the responsibility of a designer rather than a classic developer. The designer is generally a more graphical, artistic focused person, and does less classic coding than a traditional developer.

👉 Introduction to Model/View/ViewModel pattern for building WPF apps – Tales from the Smart Client

まとめ

2012年4月現在、XAMLを使用するWPFなどのテクノロジ以外で使用されるMVVMは実質Presentation Modelと変わらず、Viewの抽象化などはできない。

👉 Model View ViewModel - Wikipedia (ja)

MVVM is a variation of Martin Fowler's Presentation Model design pattern. MVVM abstracts a view's state and behavior in the same way, but a Presentation Model abstracts a view (creates a view model) in a manner not dependent on a specific user-interface platform.

👉 Model–view–viewmodel - Wikipedia (en)

同じと思っていいのか。

新装版リファクタリング Martin Fowler (著), 児玉公信 (翻訳)

class LocalRepository(context: Context) { private val driver = AndroidSqliteDriver(Schema, context, "test.db") private val queries = Database(driver).playerQueries fun insert(player: GiantsPlayer) { queries.insert(player.number, player.name) } fun selectAll(): List<GiantsPlayer> { return queries.selectAll() .executeAsList().map { GiantsPlayer(it.number, it.name) } } }