December 2020
Intermediate to advanced
256 pages
8h 30m
Polish
Content preview from Architektura aplikacji w Pythonie
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Rozdział 2. Wzorzec Repozytorium
Czas spełnić obietnicę, że użyjemy zasady odwrócenia zależności w celu rozłączenia naszej logiki podstawowej od spraw dotyczących infrastruktury.
W tym rozdziale opisujemy wzorzec Repozytorium (ang. Repository), który upraszcza abstrakcję nad magazynem danych, umożliwiając oddzielenie warstwy modelu od warstwy danych. Pokażemy konkretny przykład, jak taka uproszczona abstrakcja ułatwia testowanie naszego systemu dzięki temu, że ukrywa kwestie związane z obsługą bazy danych.
Na rysunku 2.1 znajduje się schemat pokazujący, co chcemy zbudować — obiekt Repository osadzony między naszym modelem domeny i bazą danych.
Rysunek 2.1. Przed zastosowaniem wzorca Repozytorium i po jego użyciu
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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.
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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.