public FeatureCursor(FeatureClass fc, IQueryFilter filter)
: base(fc?.SpatialReference, filter?.FeatureSpatialReference)
{
_fc = fc;
_filter = filter;
_cache = _filter?.DatasetCachingContext?.GetCache <FeatureCache>();
_geoJsonFeatures = _cache?[_fc.Name]?.ToArray();
}
async public Task <bool> InitFeatureCache(DatasetCachingContext cachingContext)
{
var map = cachingContext?.Map;
var featureCache = cachingContext?.GetCache <FeatureCache>();
if (featureCache?.Dataset == this)
{
return(true);
}
if (map != null)
{
FeatureCache cache = new FeatureCache(this);
await cache.LoadAsync(map.Display);
cachingContext.AddCache(cache);
}
return(true);
}