RxSharedPreferencesMigration
interface RxSharedPreferencesMigration<T : Any?>
Client implemented migration interface.
Summary
Public functions |
|
|---|---|
Single<T> |
migrate(Maps SharedPreferences into T. |
open Single<Boolean> |
shouldMigrate(currentData: T)Whether or not the migration should be run. |
Public functions
migrate
fun migrate(
sharedPreferencesView: <Error class: unknown class>,
currentData: T
): Single<T>
Maps SharedPreferences into T. Implementations should be idempotent since this may be called multiple times. See DataMigration.migrate for more information. The method accepts a SharedPreferencesView which is the view of the SharedPreferences to migrate from (limited to keysToMigrate) and a T which represent the current data. The function must return the migrated data.
If SharedPreferences is empty or does not contain any keys which you specified, this callback will not run.
| Parameters | |
|---|---|
sharedPreferencesView: <Error class: unknown class> |
the current state of the SharedPreferences |
currentData: T |
the most recently persisted data |
| Returns | |
|---|---|
Single<T> |
a Single of the updated data |
shouldMigrate
open fun shouldMigrate(currentData: T): Single<Boolean>
Whether or not the migration should be run. This can be used to skip a read from the SharedPreferences.
| Parameters | |
|---|---|
currentData: T |
the most recently persisted data |