/// <summary>
/// DEVNOTE: Need to refactor to use CosmosJsonSerializer
/// </summary>
public static FeedResponse <T> ConvertCosmosElementFeed <T>(
FeedResponse <CosmosElement> dynamicFeed,
ResourceType resourceType,
CosmosJsonSerializer jsonSerializer)
{
if (dynamicFeed.Count == 0)
{
return(new FeedResponse <T>(
new List <T>(),
dynamicFeed.Count,
dynamicFeed.Headers,
dynamicFeed.UseETagAsContinuation,
dynamicFeed.QueryMetrics,
dynamicFeed.RequestStatistics,
dynamicFeed.DisallowContinuationTokenMessage,
dynamicFeed.ResponseLengthBytes));
}
IJsonWriter jsonWriter = JsonWriter.Create(JsonSerializationFormat.Text);
jsonWriter.WriteArrayStart();
foreach (CosmosElement cosmosElement in dynamicFeed)
{
cosmosElement.WriteTo(jsonWriter);
}
jsonWriter.WriteArrayEnd();
MemoryStream stream = new MemoryStream(jsonWriter.GetResult());
IEnumerable <T> typedResults;
// If the resource type is an offer and the requested type is either a Offer or OfferV2 or dynamic
// create a OfferV2 object and cast it to T. This is a temporary fix until offers is moved to v3 API.
if (resourceType == ResourceType.Offer &&
(typeof(T).IsSubclassOf(typeof(Resource)) || typeof(T) == typeof(object)))
{
typedResults = jsonSerializer.FromStream <List <OfferV2> >(stream).Cast <T>();
}
else
{
typedResults = jsonSerializer.FromStream <List <T> >(stream);
}
return(new FeedResponse <T>(
typedResults,
dynamicFeed.Count,
dynamicFeed.Headers,
dynamicFeed.UseETagAsContinuation,
dynamicFeed.QueryMetrics,
dynamicFeed.RequestStatistics,
dynamicFeed.DisallowContinuationTokenMessage,
dynamicFeed.ResponseLengthBytes));
}
internal static ReadFeedResponse <TInput> CreateResponse <TInput>(
CosmosResponseMessageHeaders responseMessageHeaders,
Stream stream,
CosmosJsonSerializer jsonSerializer,
bool hasMoreResults)
{
using (stream)
{
CosmosFeedResponseUtil <TInput> response = jsonSerializer.FromStream <CosmosFeedResponseUtil <TInput> >(stream);
IEnumerable <TInput> resources = response.Data;
ReadFeedResponse <TInput> readFeedResponse = new ReadFeedResponse <TInput>(
resource: resources,
responseMessageHeaders: responseMessageHeaders,
hasMoreResults: hasMoreResults);
return(readFeedResponse);
}
}
internal T ToObjectInternal <T>(CosmosResponseMessage cosmosResponseMessage, CosmosJsonSerializer jsonSerializer)
{
// Not finding something is part of a normal work-flow and should not be an exception.
// This prevents the unnecessary overhead of an exception
if (cosmosResponseMessage.StatusCode == HttpStatusCode.NotFound)
{
return(default(T));
}
//Throw the exception
cosmosResponseMessage.EnsureSuccessStatusCode();
if (cosmosResponseMessage.Content == null)
{
return(default(T));
}
return(jsonSerializer.FromStream <T>(cosmosResponseMessage.Content));
}
private void InitializeResource(
Stream stream,
CosmosJsonSerializer jsonSerializer)
{
this.Resources = jsonSerializer.FromStream <CosmosFeedResponse <T> >(stream).Data;
}
