private void TestRoundTrip <TCoordinates>(string expected, GeoJsonGeometryCollection <TCoordinates> geometryCollection) where TCoordinates : GeoJsonCoordinates
{
var json = geometryCollection.ToJson();
Assert.AreEqual(expected, json);
var rehydrated = BsonSerializer.Deserialize <GeoJsonGeometryCollection <TCoordinates> >(json);
Assert.AreEqual(expected, rehydrated.ToJson());
}
/// <summary>
/// Parses the specified <paramref name="json"/> object into an instance deriving from <see cref="GeoJsonObject"/>.
///
/// As the GeoJSON format specified the type of a
/// </summary>
/// <param name="json">The JSON object.</param>
/// <returns>An instance that derives from <see cref="GeoJsonObject"/>.</returns>
private static GeoJsonObject Parse(JObject json)
{
if (json == null)
{
return(null);
}
// Get the value of the "type" property
string type = json.GetString("type");
if (string.IsNullOrWhiteSpace(type))
{
throw new GeoJsonParseException("The JSON object doesn't specify a type", json);
}
// Parse the type into an enum
if (EnumUtils.TryParseEnum(type, out GeoJsonType result) == false)
{
throw new GeoJsonParseException($"Unknown type {type}", json);
}
switch (result)
{
case GeoJsonType.Feature:
return(GeoJsonFeature.Parse(json));
case GeoJsonType.FeatureCollection:
return(GeoJsonFeatureCollection.Parse(json));
case GeoJsonType.Point:
return(GeoJsonPoint.Parse(json));
case GeoJsonType.LineString:
return(GeoJsonLineString.Parse(json));
case GeoJsonType.Polygon:
return(GeoJsonPolygon.Parse(json));
case GeoJsonType.MultiPoint:
return(GeoJsonMultiPoint.Parse(json));
//case GeoJsonType.MultiLineString:
// return GeoJsonMultiLineString.Parse(obj);
case GeoJsonType.MultiPolygon:
return(GeoJsonMultiPolygon.Parse(json));
case GeoJsonType.GeometryCollection:
return(GeoJsonGeometryCollection.Parse(json));
default:
throw new GeoJsonParseException($"Unknown type {type}", json);
}
}
/// <summary>
/// Serializes a value.
/// </summary>
/// <param name="context">The serialization context.</param>
/// <param name="args">The serialization args.</param>
/// <param name="value">The value.</param>
protected override void SerializeValue(BsonSerializationContext context, BsonSerializationArgs args, GeoJsonGeometryCollection <TCoordinates> value)
{
_helper.SerializeMembers(context, value, SerializeDerivedMembers);
}
private void SerializeDerivedMembers(BsonSerializationContext context, GeoJsonGeometryCollection <TCoordinates> value)
{
SerializeGeometries(context, value.Geometries);
}
