Introduction to Realm

Basic introduction about Realm

Transcript

1. Introduction to Realm
2. Available Solutions in iOS • Serialization (JSON/PList) • SQLite • Core Data
3. Core Data • It’s not easy to fully understand the API • Lots of boilerplate code • Passing data between threads is tricky
4. SQLite • Difficult (c, query language) • Query result need to mapped to models • Query are very fast • Many third party library
5. Serialization • Acceptable in small class • Not smart • Potentially slow • Not thread-safe
6. Realm • An open source (ish) database framework • A complete replacement for Core Data/ SQLite • Implemented from scratch • Fast, simple API, thread safe • Cross platform (Mac, iOS, Android) • Free
7. Realm iOS Benchmark
8. Realm iOS Benchmark
9. Realm iOS Benchmark
10. Basic Realm Object
11. Realm Configuration
12. Create Object
13. Create Object
14. Adding Object
15. Update Object
16. Delete Object
17. Query • Queries return RLMResults instance • Data is only read when the properties are accesssed • Results to a query are not copies • The most basic method for retrieving objects
18. Filter NSPredicate cheatsheet
19. Sorting
20. Threading
21. The End