get<_Model extends _RepositoryModel> method
Load association from SQLite first; if the _Model
hasn't been loaded previously,
fetch it from remoteProvider and hydrate SQLite.
For available query providerArgs see remoteProvider#get
SqliteProvider.get.
alwaysHydrate
ensures data is fetched from the remoteProvider for each invocation.
This often negatively affects performance when enabled. Defaults to false
.
hydrateUnexisting
retrieves from the remoteProvider if the query returns no results from SQLite.
If an empty response can be expected (such as a search page), set to false
. Defaults to true
.
requireRemote
ensures data must be updated from the remoteProvider before returning if the app is online.
An empty array will be returned if the app is offline. Defaults to false
.
seedOnly
does not load data from SQLite after inserting records. Association queries
can be expensive for large datasets, making deserialization a significant hit when the result
is ignorable (e.g. eager loading). Defaults to false
.
Implementation
@override
Future<List<_Model>> get<_Model extends _RepositoryModel>({
Query? query,
bool alwaysHydrate = false,
bool hydrateUnexisting = true,
bool requireRemote = false,
bool seedOnly = false,
}) async {
query = (query ?? Query()).copyWith(action: QueryAction.get);
logger.finest('#get: $_Model $query');
if (memoryCacheProvider.canFind<_Model>(query)) {
final memoryCacheResults = memoryCacheProvider.get<_Model>(query: query, repository: this);
if (memoryCacheResults?.isNotEmpty ?? false) return memoryCacheResults!;
}
final modelExists = await exists<_Model>(query: query);
if (requireRemote || (hydrateUnexisting && !modelExists)) {
return await hydrate<_Model>(query: query, deserializeSqlite: !seedOnly);
} else if (alwaysHydrate) {
// start round trip for fresh data
// ignore: unawaited_futures
hydrate<_Model>(query: query, deserializeSqlite: !seedOnly);
}
return await sqliteProvider
.get<_Model>(query: query, repository: this)
// cache this query
.then((m) => memoryCacheProvider.hydrate<_Model>(m));
}