/// <summary>
/// Asynchronously reads the json object value from the jsonReader
/// </summary>
/// <param name="jsonReader">Json reader to read payload from the wire.</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="recursionDepth">The recursion depth to start with.</param>
/// <returns>A task that represents the asynchronous read operation.
/// The value of the TResult parameter contains an instance of IDictionary containing the spatial value.</returns>
private static async Task <Dictionary <string, object> > ReadObjectValueAsync(
IJsonReaderAsync jsonReader,
bool insideJsonObjectValue,
ODataInputContext inputContext,
int recursionDepth)
{
Debug.Assert(jsonReader != null, "jsonReader != null");
Debug.Assert(insideJsonObjectValue || jsonReader.NodeType == JsonNodeType.StartObject,
"insideJsonObjectValue || jsonReader.NodeType == JsonNodeType.StartObject");
Debug.Assert(
!insideJsonObjectValue || jsonReader.NodeType == JsonNodeType.Property || jsonReader.NodeType == JsonNodeType.EndObject,
"!insideJsonObjectValue || jsonReader.NodeType == JsonNodeType.Property || jsonReader.NodeType == JsonNodeType.EndObject");
Debug.Assert(inputContext != null, "inputContext != null");
ValidationUtils.IncreaseAndValidateRecursionDepth(ref recursionDepth, inputContext.MessageReaderSettings.MessageQuotas.MaxNestingDepth);
Dictionary <string, object> jsonValue = new Dictionary <string, object>(StringComparer.Ordinal);
if (!insideJsonObjectValue)
{
// Note that if the insideJsonObjectValue is true we will ignore the odata.type instance annotation
// which might have been there. This is OK since for spatial we only need the normal properties anyway.
await jsonReader.ReadNextAsync()
.ConfigureAwait(false);
}
while (jsonReader.NodeType != JsonNodeType.EndObject)
{
// read the property name
string propertyName = await jsonReader.ReadPropertyNameAsync()
.ConfigureAwait(false);
// read the property value
object propertyValue;
switch (jsonReader.NodeType)
{
case JsonNodeType.PrimitiveValue:
propertyValue = await jsonReader.ReadPrimitiveValueAsync()
.ConfigureAwait(false);
break;
case JsonNodeType.StartArray:
propertyValue = await ReadArrayValueAsync(jsonReader, inputContext, recursionDepth)
.ConfigureAwait(false);
break;
case JsonNodeType.StartObject:
propertyValue = await ReadObjectValueAsync(jsonReader, /*insideJsonObjectValue*/ false, inputContext, recursionDepth)
.ConfigureAwait(false);
break;
default:
Debug.Assert(false, "We should never reach here - There should be matching end element");
return(null);
}
jsonValue.Add(ODataAnnotationNames.RemoveAnnotationPrefix(propertyName), propertyValue);
}
await jsonReader.ReadEndObjectAsync()
.ConfigureAwait(false);
return(jsonValue);
}
/// <summary>
/// Asynchronously reads the next node from the <paramref name="jsonReader"/> as an <see cref="ODataValue"/>.
/// </summary>
/// <param name="jsonReader">The reader to inspect.</param>
/// <returns>A task that represents the asynchronous read operation.
/// The value of the TResult parameter contains the <see cref="ODataValue"/> value read from the reader.</returns>
internal static async Task <ODataValue> ReadODataValueAsync(this IJsonReaderAsync jsonReader)
{
if (jsonReader.NodeType == JsonNodeType.PrimitiveValue)
{
object primitiveValue = await jsonReader.ReadPrimitiveValueAsync()
.ConfigureAwait(false);
return(primitiveValue.ToODataValue());
}
else if (jsonReader.NodeType == JsonNodeType.StartObject)
{
await jsonReader.ReadStartObjectAsync()
.ConfigureAwait(false);
ODataResourceValue resourceValue = new ODataResourceValue();
List <ODataProperty> properties = new List <ODataProperty>();
while (jsonReader.NodeType != JsonNodeType.EndObject)
{
ODataProperty property = new ODataProperty();
property.Name = await jsonReader.ReadPropertyNameAsync()
.ConfigureAwait(false);
property.Value = await jsonReader.ReadODataValueAsync()
.ConfigureAwait(false);
properties.Add(property);
}
resourceValue.Properties = properties;
await jsonReader.ReadEndObjectAsync()
.ConfigureAwait(false);
return(resourceValue);
}
else if (jsonReader.NodeType == JsonNodeType.StartArray)
{
await jsonReader.ReadStartArrayAsync()
.ConfigureAwait(false);
ODataCollectionValue collectionValue = new ODataCollectionValue();
List <object> properties = new List <object>();
while (jsonReader.NodeType != JsonNodeType.EndArray)
{
ODataValue odataValue = await jsonReader.ReadODataValueAsync()
.ConfigureAwait(false);
properties.Add(odataValue);
}
collectionValue.Items = properties;
await jsonReader.ReadEndArrayAsync()
.ConfigureAwait(false);
return(collectionValue);
}
else
{
return(await jsonReader.ReadAsUntypedOrNullValueAsync()
.ConfigureAwait(false));
}
}
