/// <summary>
/// Aktualisiert diesen Layer und den <see cref="AreaOfInterest"/>.
/// </summary>
internal async Task UpdateAsync()
{
Overlay.Graphics.Clear();
var geometries = new List <Geometry>();
var featureCollection = await _service.Query(_url);
foreach (var feature in featureCollection.Features)
{
var roadGeometry = feature.Geometry;
switch (roadGeometry.Type)
{
case @"MultiLineString":
var roadGraphic = CreateRoadGraphic(feature, SpatialReferences.Wgs84, _mapSpatialReference);
Overlay.Graphics.Add(roadGraphic);
geometries.Add(roadGraphic.Geometry);
break;
}
}
// Ausdehnung neu berechnen
var union = GeometryEngine.Union(geometries);
AreaOfInterest = union.Extent;
}
public static async Task Run([TimerTrigger("0 */15 * * * *")] TimerInfo timer, ILogger log)
{
#if DEBUG
log.LogInformation("Update traffic layer . . .");
#endif
var trafficUrl = Environment.GetEnvironmentVariable(@"traffic.url");
#if DEBUG
log.LogInformation($"Connecting to {trafficUrl}");
#endif
var portalUrl = Environment.GetEnvironmentVariable(@"portal.url");
var appId = Environment.GetEnvironmentVariable(@"portal.appid");
var clientId = Environment.GetEnvironmentVariable(@"portal.clientid");
var featureService = Environment.GetEnvironmentVariable(@"portal.featureservice");
try
{
var roadFeatureCollection = await TrafficServiceInstance.Query(trafficUrl);
var wgs84 = new Crs {
Type = @"EPSG", Properties = new CrsProperties {
Wkid = 4326
}
};
roadFeatureCollection.CoordinateReferenceSystem = wgs84;
var roadFeatures = roadFeatureCollection.ToFeatures();
using (var gateway = new PortalGateway(portalUrl, tokenProvider: new ArcGISOnlineAppLoginOAuthProvider(appId, clientId)))
{
#if DEBUG
var info = await gateway.Info();
log.LogInformation($"Connecting to {info.FullVersion}");
#endif
var featureServiceEndpoint = featureService.AsEndpoint();
var queryAllIds = new QueryForIds(featureServiceEndpoint);
queryAllIds.Where = @"1=1";
var queryAllIdsResult = await gateway.QueryForIds(queryAllIds);
var deleteAll = new ApplyEdits <IGeometry>(featureServiceEndpoint);
deleteAll.Deletes.AddRange(queryAllIdsResult.ObjectIds);
var deleteAllResult = await gateway.ApplyEdits(deleteAll);
var addRoads = new ApplyEdits <IGeometry>(featureServiceEndpoint);
foreach (var roadFeature in roadFeatures)
{
roadFeature.Geometry.SpatialReference = SpatialReference.WGS84;
var serviceDateTime = (DateTime)roadFeature.Attributes[@"auswertezeit"];
roadFeature.Attributes[@"auswertezeit"] = DateTimeUtils.ConvertServiceTimeToUniversalTime(serviceDateTime);
addRoads.Adds.Add(roadFeature);
}
var addRoadsResult = await gateway.ApplyEdits(addRoads);
}
}
catch (Exception ex)
{
log.LogError(ex.Message);
}
}
public void TestQueryCityOfBonn()
{
using (var service = new TrafficService())
{
var featureCollection = service.Query(@"http://stadtplan.bonn.de/geojson?Thema=19584").Result;
Assert.IsNotNull(featureCollection, @"Die FeatureCollection muss instanziert sein!");
foreach (var feature in featureCollection.Features)
{
Assert.IsNotNull(feature, @"Ein jedes Feature muss instanziert sein!");
var geometry = feature.Geometry;
Assert.IsNotNull(geometry, @"Die Geometrie muss instanziert sein!");
var properties = feature.Properties;
Assert.IsNotNull(properties, @"Die Eigenschaften müssen instanziert sein!");
}
}
}