Arch Room

Room helpers to instantiate your DB and perform transactions in Kotlin.

Content

Room Database instantiation

The roomDb(…) function has a reified type parameter used to call Room.databaseBuilder with the proper arguments. name is the only required parameter.

You can specify a Context as first parameter if you don’t want to use the application context, if you want to use a different context (e.g. to use directBootCtx in a direct boot aware app component).

The last parameter is a lambda with the db builder as receiver where you can things like migrations.

Room Database transactions

transaction { … } is the inline version of runInTransaction, with your database as receiver.

inTransaction { … } does the same as transaction { … } but returns the value of the last expression of the lambda.

Inlining brings a slight performance improvement at runtime and reduces the number of classes, making the apk smaller.

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implementation "com.louiscad.splitties:splitties-arch-room:2.1.1"