private async Task WriteOperationParameterAsync(ODataParameterWriter parameterWriter, IEdmOperationParameter operationParameter, string paramName, object paramValue)
{
switch (operationParameter.Type.Definition.TypeKind)
{
case EdmTypeKind.Primitive:
case EdmTypeKind.Complex:
var value = GetPropertyValue(operationParameter.Type, paramValue);
await parameterWriter.WriteValueAsync(paramName, value).ConfigureAwait(false);
break;
case EdmTypeKind.Enum:
await parameterWriter.WriteValueAsync(paramName, new ODataEnumValue(paramValue.ToString())).ConfigureAwait(false);
break;
case EdmTypeKind.Entity:
var entryWriter = await parameterWriter.CreateEntryWriterAsync(paramName).ConfigureAwait(false);
var entry = CreateODataEntry(operationParameter.Type.Definition.FullTypeName(), paramValue.ToDictionary());
await entryWriter.WriteStartAsync(entry).ConfigureAwait(false);
await entryWriter.WriteEndAsync().ConfigureAwait(false);
break;
case EdmTypeKind.Collection:
var collectionType = operationParameter.Type.Definition as IEdmCollectionType;
var elementType = collectionType.ElementType;
if (elementType.Definition.TypeKind == EdmTypeKind.Entity)
{
var feedWriter = await parameterWriter.CreateFeedWriterAsync(paramName).ConfigureAwait(false);
var feed = new ODataFeed();
await feedWriter.WriteStartAsync(feed).ConfigureAwait(false);
foreach (var item in paramValue as IEnumerable)
{
var feedEntry = CreateODataEntry(elementType.Definition.FullTypeName(), item.ToDictionary());
await feedWriter.WriteStartAsync(feedEntry).ConfigureAwait(false);
await feedWriter.WriteEndAsync().ConfigureAwait(false);
}
await feedWriter.WriteEndAsync().ConfigureAwait(false);
}
else
{
var collectionWriter = await parameterWriter.CreateCollectionWriterAsync(paramName).ConfigureAwait(false);
await collectionWriter.WriteStartAsync(new ODataCollectionStart()).ConfigureAwait(false);
foreach (var item in paramValue as IEnumerable)
{
await collectionWriter.WriteItemAsync(item).ConfigureAwait(false);
}
await collectionWriter.WriteEndAsync().ConfigureAwait(false);
}
break;
default:
throw new NotSupportedException(string.Format("Unable to write action parameter of a type {0}", operationParameter.Type.Definition.TypeKind));
}
}