public static async Task WriteCollectionAsync(IEdmModel edmModel, ODataUri odataUri, IAsyncEnumerator <Object> asyncEnumerator, Stream responseStream)
{
var importSegment = (OperationImportSegment)odataUri.Path.LastSegment;
IEdmOperationImport operationImport = importSegment.OperationImports.Single();
Type returnType = edmModel.GetClrType(operationImport.Operation.ReturnType.Definition);
IODataRequestMessage requestMessage = new Infrastructure.OeInMemoryMessage(responseStream, null);
using (ODataMessageWriter messageWriter = new ODataMessageWriter(requestMessage,
new ODataMessageWriterSettings()
{
EnableMessageStreamDisposal = false, ODataUri = odataUri
}, edmModel))
{
IEdmTypeReference typeRef = OeEdmClrHelper.GetEdmTypeReference(edmModel, returnType);
ODataCollectionWriter writer = await messageWriter.CreateODataCollectionWriterAsync(typeRef).ConfigureAwait(false);
await writer.WriteStartAsync(new ODataCollectionStart()).ConfigureAwait(false);
while (await asyncEnumerator.MoveNextAsync().ConfigureAwait(false))
{
Object value = asyncEnumerator.Current;
if (value != null && value.GetType().IsEnum)
{
value = value.ToString();
}
await writer.WriteItemAsync(value).ConfigureAwait(false);
}
await writer.WriteEndAsync().ConfigureAwait(false);
}
}
/// <inheritdoc/>
public override async Task WriteObjectAsync(object graph, Type type, ODataMessageWriter messageWriter,
ODataSerializerContext writeContext)
{
if (messageWriter == null)
{
throw Error.ArgumentNull("messageWriter");
}
if (writeContext == null)
{
throw Error.ArgumentNull("writeContext");
}
IEdmTypeReference collectionType = writeContext.GetEdmType(graph, type);
Contract.Assert(collectionType != null);
IEdmTypeReference elementType = GetElementType(collectionType);
ODataCollectionWriter writer = await messageWriter.CreateODataCollectionWriterAsync(elementType);
await WriteCollectionAsync(writer, graph, collectionType.AsCollection(), writeContext);
}