Realm SDK Kotlin Multiplatform

Transcript

1. Ian Arbuckle - Software Engineer at Zendesk Building a database using KMP Realm SDK
2. What is Kotlin Multiplatform?
3. It is a platform that allows you to share code and build cross-platform mobile applications between Android and iOS
4. History of Realm • Acquired by MongoDB in 2019 for $39 million • Realm established itself as the mobile database platform • MongoDB Realm can now offer capabilities with their Atlas cloud platform
5. How Kotlin Realm SDK can help you Share code Sharing database business logic across both Android and iOS Object Oriented Model We can access objects via our Realm instance Intuitive API We can leverage Kotlin DSLs and NSPredicate style for querying objects Open Source It is open source and accepts community contributions https://github.com/realm/realm-kotlin
6. But.. it’s still in beta so don’t say I didn’t warn you!
7. Can we use the new memory model? • There is a catch! The library is still implemented against the old memory model. • To enable against the new model you will need to follow these instructions —> https://github.com/JetBrains/kotlin/blob/master/kotlin-native/ NEW_MM.md#switch-to-the-new-mm • By default the library requires you to run against the non native coroutines artifact i.e. 1.6.0-native-mt
8. kotlin.native.binary.memoryModel=experimental kotlin.native.binary.freezing=disabled To run against non mt artifact, add these to grade.properties See https://github.com/JetBrains/kotlin/blob/master/kotlin-native/NEW_MM.md#unexpected-object- freezing for more details on object freezing
9. class BeersDb: RealmObject { var id: String = "" var name: String = "" var imageUrl: String = "" var abv: Double = 0.0 } Creating a Realm Object
10. class BeersDb: RealmObject { var id: String = "" var name: String = "" var imageUrl: String = "" var abv: Double = 0.0 } Creating a Realm Object
11. val con fi g = RealmCon fi guration.Builder(schema = setOf(BeersDB::class)) .build() val realm = Realm.open(con fi g) Creating our Realm instance
12. val con fi g = RealmCon fi guration.Builder(schema = setOf(BeersDB::class)) .build() val realm = Realm.open(con fi g) Creating our Realm instance
13. val con fi g = RealmCon fi guration.Builder(schema = setOf(BeersDB::class)) .build() val realm = Realm.open(con fi g) Creating our Realm instance
14. Let’s build a simple app
15. Github Repository - https://github.com/IanArb/BeersRealmApp