public void GetDatastreamsTest()
{
// act
var response = client.GetDatastreamCollection().Result;
var datastreams = response.Result;
// assert
Assert.IsTrue(datastreams.Count > 0);
Assert.IsTrue(datastreams.NextLink == "http://scratchpad.sensorup.com/OGCSensorThings/v1.0/Datastreams?$top=100&$skip=100");
Assert.IsTrue(datastreams.Items.Count == 100);
}
/// <summary>
/// Get Datastreams where name contains temperature including Sensor and ObservedProperty
/// and the 5 latest observations with a result of 15 or higher
/// select only id and name for datastreams and id, result and phenomenonTime for the observations
/// </summary>
public static async void GetDatastreamsOdataExample()
{
var odataQueryObservations = new OdataQuery
{
QuerySelect = new QuerySelect(new[] { "id", "result", "phenomenonTime" }),
QueryTop = new QueryTop(5),
QueryFilter = new QueryFilter("result ge 15"),
QueryOrderBy = new QueryOrderBy(new Dictionary <string, OrderType> {
{ "phenomenonTime", OrderType.Descending }
})
};
var odataQuery = new OdataQuery
{
QuerySelect = new QuerySelect(new[] { "id", "name" }),
QueryFilter = new QueryFilter("contains(name,'temperature')"),
QueryExpand = new QueryExpand(new[] {
new Expand(new[] { "Sensor" }),
new Expand(new[] { "ObservedProperty" }),
new Expand(new[] { "Observations" }, odataQueryObservations)
})
};
var datastreamsResponse = await Client.GetDatastreamCollection(odataQuery);
if (datastreamsResponse.Success)
{
var datastreams = datastreamsResponse.Result;
foreach (var datastream in datastreams.Items)
{
Console.WriteLine("------------------------------");
Console.WriteLine($"Datastream: {datastream.Name}");
Console.WriteLine("------------------------------");
Console.WriteLine($"Sensor: {datastream.Sensor.Name}");
Console.WriteLine($"ObservedProperty: {datastream.ObservedProperty.Name}");
foreach (var obs in datastream.Observations)
{
Console.WriteLine($"{obs.PhenomenonTime.Start} - {obs.Result}");
}
Console.WriteLine("");
}
}
}
static void Main()
{
Console.WriteLine("Sample console app for SensorThings API client");
var server = "http://scratchpad.sensorup.com/OGCSensorThings/v1.0/";
var client = new SensorThingsClient(server);
Console.WriteLine("Create observation for datastream 18");
var datastream = new Datastream {
Id = "263"
};
var observation = new Observation
{
Datastream = datastream,
PhenomenonTime = new DateTimeRange(DateTime.UtcNow),
Result = 100
};
// do not create observations for now
_ = client.CreateObservation(observation).Result;
Console.WriteLine("Retrieve all paged datastreams...");
var response = client.GetDatastreamCollection().Result;
var page = response.Result;
var pagenumber = 1;
while (page != null)
{
Console.WriteLine("---------------------------------------");
WritePage(response.Result);
var pageResponse = page.GetNextPage().Result;
page = pageResponse?.Result;
pagenumber++;
}
Console.WriteLine("End retrieving datastreams...");
Console.WriteLine("Number of pages: " + pagenumber);
var datastreamResponse = client.GetDatastream("263").Result;
datastream = datastreamResponse.Result;
var observationsResponse = datastream.GetObservations(client).Result;
var observations = observationsResponse.Result;
Console.WriteLine("Number if observations: " + observations.Count);
Console.WriteLine("Sample with locations");
var locationsResponse = client.GetLocationCollection().Result;
var locations = locationsResponse.Result;
// Get location without using GeoJSON.NET (works only for points)
var firstlocation = locations.Items[0];
var feature = (JObject)firstlocation.Feature;
var lon = feature.First.First.First.Value <double>();
var lat = feature.First.First.Last.Value <double>();
Console.WriteLine($"Location: {lon},{lat}");
// if using GeoJSON.NET use something like:
// var p = JsonConvert.DeserializeObject<Point>(feature.ToString());
// var ipoint = (GeographicPosition)p.Coordinates;
// Console.WriteLine("Location: " + ipoint.Longitude + ", " + ipoint.Latitude);
Console.WriteLine("Program ends... Press a key to continue.");
Console.ReadKey();
}
