readStream method
- required String route,
- Map<
String, dynamic> ? params, - StreamSource source = StreamSource.remoteOnly,
- bool persevere = true,
Read and stream data for a read
route added on the server side
Similar to read and it does stream changes.
Returns a Stream.
route
The path of the route.
params
Additional data (optional),
here can be added a filter to indicate to the server
which data will be received.
persevere
Default: true (optional). If persevere
is true
and this route was created in the server with addRouteFor.authenticatedUsers
(requires authentication)
but clearAuthentication() is called, then this route will wait for the authentication to come back.
In case of false
the route will be canceled right after clearAuthentication() is called (only if this route requires authentication).
This is no-op in case this route doesn't require authentication (addRoute.forAllUsers
).
source
(optional) Default: StreamSource.remoteOnly.
If StreamSource.remoteOnly shows only realtime events from the server (recommended).
If StreamSource.cacheAndRemote Uses the last emitted event (from another stream with same route
and params
) as the first event,
only in case it's available.
Example
late StreamSubscription myTextMessagesSubscription;
@override
void initState() {
super.initState();
myTextMessagesSubscription = AsklessClient.instance.readStream(
route: "my-text-messages",
params: { "contains" : "thanks" },
source: StreamSource.remoteOnly,
persevere: true,
).listen((event) {
print(event);
});
}
@override
void dispose() {
/// remember to cancel() on dispose()
myTextMessagesSubscription.cancel();
super.dispose();
}
Implementation
Stream readStream({required String route, Map<String, dynamic>? params, StreamSource source = StreamSource.remoteOnly, bool persevere = true}) {
return getIt.get<ListeningHandler>().stream(
listenCli: ListenCli(route: route, params: params),
source: source,
persevere: persevere,
);
}