/// <summary>
/// Try and parse spatial type from the json payload.
/// </summary>
/// <param name="jsonReader">The JSON reader to read from.</param>
/// <param name="insideJsonObjectValue">true if the reader is positioned on the first property of the value which is a JSON Object
/// (or the second property if the first one was odata.type).</param>
/// <param name="inputContext">The input context with all the settings.</param>
/// <param name="expectedValueTypeReference">Expected edm property type.</param>
/// <param name="validateNullValue">true to validate null values; otherwise false.</param>
/// <param name="recursionDepth">The recursion depth to start with.</param>
/// <param name="propertyName">The name of the property whose value is being read, if applicable (used for error reporting).</param>
/// <returns>An instance of the spatial type.</returns>
internal static async Task <ISpatial> ReadSpatialValueAsync(
IJsonReaderAsync jsonReader,
bool insideJsonObjectValue,
ODataInputContext inputContext,
IEdmPrimitiveTypeReference expectedValueTypeReference,
bool validateNullValue,
int recursionDepth,
string propertyName)
{
Debug.Assert(jsonReader != null, "jsonReader != null");
Debug.Assert(inputContext != null, "inputContext != null");
Debug.Assert(expectedValueTypeReference != null, "expectedValueTypeReference != null");
Debug.Assert(expectedValueTypeReference.IsSpatial(), "TryParseSpatialType must be called only with spatial types");
// Spatial value can be either null constant or a JSON object
// If it's a null primitive value, report a null value.
if (!insideJsonObjectValue &&
await TryReadNullValueAsync(jsonReader, inputContext, expectedValueTypeReference, validateNullValue, propertyName)
.ConfigureAwait(false))
{
return(null);
}
ISpatial spatialValue = null;
if (insideJsonObjectValue || jsonReader.NodeType == JsonNodeType.StartObject)
{
Dictionary <string, object> jsonObject = await ReadObjectValueAsync(jsonReader, insideJsonObjectValue, inputContext, recursionDepth)
.ConfigureAwait(false);
GeoJsonObjectFormatter jsonObjectFormatter =
SpatialImplementation.CurrentImplementation.CreateGeoJsonObjectFormatter();
if (expectedValueTypeReference.IsGeography())
{
spatialValue = jsonObjectFormatter.Read <Geography>(jsonObject);
}
else
{
spatialValue = jsonObjectFormatter.Read <Geometry>(jsonObject);
}
}
if (spatialValue == null)
{
throw new ODataException(ODataErrorStrings.ODataJsonReaderCoreUtils_CannotReadSpatialPropertyValue);
}
return(spatialValue);
}