/// <summary>
/// Write an inner error property and message.
/// </summary>
/// <param name="jsonWriter">The JSON writer to write the error to.</param>
/// <param name="innerError">Inner error details.</param>
/// <param name="innerErrorPropertyName">The property name for the inner error property.</param>
/// <param name="recursionDepth">The number of times this method has been called recursively.</param>
/// <param name="maxInnerErrorDepth">The maximum number of nested inner errors to allow.</param>
/// <returns>A task that represents the asynchronous write operation.</returns>
private static async Task WriteInnerErrorAsync(IJsonWriterAsync jsonWriter, ODataInnerError innerError,
string innerErrorPropertyName, int recursionDepth, int maxInnerErrorDepth)
{
Debug.Assert(jsonWriter != null, "jsonWriter != null");
Debug.Assert(innerErrorPropertyName != null, "innerErrorPropertyName != null");
ValidationUtils.IncreaseAndValidateRecursionDepth(ref recursionDepth, maxInnerErrorDepth);
// "innererror":
await jsonWriter.WriteNameAsync(innerErrorPropertyName).ConfigureAwait(false);
await jsonWriter.StartObjectScopeAsync().ConfigureAwait(false);
if (innerError.Properties != null)
{
foreach (KeyValuePair <string, ODataValue> pair in innerError.Properties)
{
await jsonWriter.WriteNameAsync(pair.Key).ConfigureAwait(false);
if (pair.Value is ODataNullValue &&
(pair.Key == JsonConstants.ODataErrorInnerErrorMessageName ||
pair.Key == JsonConstants.ODataErrorInnerErrorStackTraceName ||
pair.Key == JsonConstants.ODataErrorInnerErrorTypeNameName))
{
// Write empty string for null values in stacktrace, type and message properties of inner error.
await jsonWriter.WriteODataValueAsync(new ODataPrimitiveValue(string.Empty)).ConfigureAwait(false);
}
else
{
await jsonWriter.WriteODataValueAsync(pair.Value).ConfigureAwait(false);
}
}
}
if (innerError.InnerError != null)
{
// "internalexception": { <nested inner error> }
await WriteInnerErrorAsync(jsonWriter, innerError.InnerError, JsonConstants.ODataErrorInnerErrorInnerErrorName,
recursionDepth, maxInnerErrorDepth).ConfigureAwait(false);
}
// }
await jsonWriter.EndObjectScopeAsync().ConfigureAwait(false);
}
/// <summary>
/// Asynchronously writes the ODataValue (primitive, collection or resource value) to the underlying json writer.
/// </summary>
/// <param name="jsonWriter">The <see cref="JsonWriter"/> to write to.</param>
/// <param name="odataValue">value to write.</param>
/// <returns>A task that represents the asynchronous write operation.</returns>
internal static async Task WriteODataValueAsync(this IJsonWriterAsync jsonWriter, ODataValue odataValue)
{
if (odataValue == null || odataValue is ODataNullValue)
{
await jsonWriter.WriteValueAsync((string)null).ConfigureAwait(false);
return;
}
object objectValue = odataValue.FromODataValue();
if (EdmLibraryExtensions.IsPrimitiveType(objectValue.GetType()))
{
await jsonWriter.WritePrimitiveValueAsync(objectValue).ConfigureAwait(false);
return;
}
ODataResourceValue resourceValue = odataValue as ODataResourceValue;
if (resourceValue != null)
{
await jsonWriter.StartObjectScopeAsync().ConfigureAwait(false);
foreach (ODataProperty property in resourceValue.Properties)
{
await jsonWriter.WriteNameAsync(property.Name).ConfigureAwait(false);
await jsonWriter.WriteODataValueAsync(property.ODataValue).ConfigureAwait(false);
}
await jsonWriter.EndObjectScopeAsync().ConfigureAwait(false);
return;
}
ODataCollectionValue collectionValue = odataValue as ODataCollectionValue;
if (collectionValue != null)
{
await jsonWriter.StartArrayScopeAsync().ConfigureAwait(false);
foreach (object item in collectionValue.Items)
{
// Will not be able to accurately serialize complex objects unless they are ODataValues.
ODataValue collectionItem = item as ODataValue;
if (item != null)
{
await jsonWriter.WriteODataValueAsync(collectionItem).ConfigureAwait(false);
}
else
{
throw new ODataException(ODataErrorStrings.ODataJsonWriter_UnsupportedValueInCollection);
}
}
await jsonWriter.EndArrayScopeAsync().ConfigureAwait(false);
return;
}
throw new ODataException(
ODataErrorStrings.ODataJsonWriter_UnsupportedValueType(odataValue.GetType().FullName));
}