You can configure a FeatureLayer
with a QueryProvider
on its LoadingStrategy
. For more information, see Dealing with large feature data sets.
The FeatureLayer
automatically queries for new data when the visible extent of the map changes.
It’s possible that the data that you want to show — and thus the queries you want to use — depend on factors external to the
FeatureLayer
.
For example, a user filters the data through the UI.
In such a case, you need to tell the FeatureLayer
to re-query the data.
You use the invalidate()
method on the QueryProvider
for that:
const dataLayer = new FeatureLayer(model);
//...
//Invalidate the QueryProvider to signal that the query has become stale
dataLayer.loadingStrategy.queryProvider.invalidate();
If the new query returns new data for existing |