Название: Elements Of Android Room 0.2 Автор: Mark L. Murphy Издательство: CommonsWare Год: 2020 Страниц: 163 Язык: английский Формат: pdf (true), rtf, mobi, epub Размер: 10.1 MB
Thanks for your interest in Room! Room is Google’s solution for a high-level database access API, for your local SQLite databases. As such, Room gets a lot of attention and is reasonably popular. Thanks also for your broader interest in Android app development! Android is the most widely-used operating system on the planet, so we need to be able to rapidly develop high-quality Android apps. Room can help with that. Here, you can learn more about how to work with Room, from the basics through more complex scenarios. And, along the way, there may be a joke or two. This book is designed for developers with at least a bit of Android app development experience. Also note that this book’s examples are written in Kotlin. If you are unfamiliar with Kotlin, you can still learn stuff about Room from this book, though it will be more difficult.
Google describes Room as providing “an abstraction layer over SQLite to allow fluent database access while harnessing the full power of SQLite.” In other words, Room aims to make your use of SQLite easier, through a lightweight annotation-based implementation of an object-relational mapping (ORM) engine. If you have ever worked with a relational database — like SQLite — from an object-oriented language — like Java or Kotlin — undoubtedly you have encountered the “object-relational impedance mismatch”. That is a very fancy way of saying “it’s a pain getting stuff into and out of the database”.
Contents:
Room Basics The Dao of Entities Room and Custom Types Room and Reactive Frameworks Relations in Room The Support Database API Database Migrations Room and Full-Text Search Room and Conflict Resolution Room and Pragmas SQLCipher for Android
What’s New in Version 0.2?
There are four new chapters, on: • Polymorphic entities • Using full-text search • Conflict resolution options • Using the Paging library with Room And there are a variety of bug fixes and other minor improvements.
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Elements Of Android Room 0.2 
