public void ConvertFeed(Uri relativeODataUri, Uri relativeSodaUri, JsonPayload jsonPayload,
DateTimeOffset feedUpdateTime)
{
var jsonObject = jsonPayload.JsonObject;
var entries = jsonObject.PropertyValue<JArray>("entries");
var meta = jsonObject.PropertyValue<JObject>("meta");
var view = meta.PropertyValue<JObject>("view");
IList<string> fieldsToIgnore;
var model = BuildModel(view, out fieldsToIgnore);
var entitySet = model.EntityContainers.Single().EntitySets().Single();
var settings = new ODataMessageWriterSettings
{
Indent = true,
};
using (var writer = new ODataMessageWriter(Message, settings, model))
{
var feedWriter = writer.CreateODataFeedWriter();
var feed = new ODataFeed();
feed.SetAnnotation(new AtomFeedMetadata
{
Updated = feedUpdateTime,
});
feed.Id = new Uri(ODataEndpointUri, relativeODataUri.OriginalString).OriginalString;
feedWriter.WriteStart(feed);
foreach (var entry in entries.Cast<JObject>())
{
var entryMetadata = new ODataEntry();
entryMetadata.Id = (string) ((JValue) entry.Property("id").Value).Value;
entryMetadata.TypeName = entitySet.ElementType.FullName();
entryMetadata.Properties = ConvertProperties(entry, fieldsToIgnore);
entryMetadata.SetAnnotation(new AtomEntryMetadata
{
Updated = ConvertDateTimeOffset(entry.PrimitivePropertyValue<long>("updated_at")),
Published = ConvertDateTimeOffset(entry.PrimitivePropertyValue<long>("created_at")),
});
feedWriter.WriteStart(entryMetadata);
feedWriter.WriteEnd();
}
feedWriter.WriteEnd();
}
}
public static MaterializerFeed CreateFeed(ODataFeed feed, IEnumerable<ODataEntry> entries)
{
if (entries == null)
{
entries = Enumerable.Empty<ODataEntry>();
}
else
{
feed.SetAnnotation<IEnumerable<ODataEntry>>(entries);
}
return new MaterializerFeed(feed, entries);
}
/// <summary>
/// Create the <see cref="ODataFeed"/> to be written for the given feed instance.
/// </summary>
/// <param name="feedInstance">The instance representing the feed being written.</param>
/// <param name="writeContext">The serializer context.</param>
/// <returns>The created <see cref="ODataFeed"/> object.</returns>
public virtual ODataFeed CreateODataFeed(IEnumerable feedInstance, ODataSerializerContext writeContext)
{
ODataFeed feed = new ODataFeed();
if (writeContext.EntitySet != null)
{
IEdmModel model = writeContext.Model;
EntitySetLinkBuilderAnnotation linkBuilder = model.GetEntitySetLinkBuilder(writeContext.EntitySet);
FeedContext feedContext = new FeedContext
{
Request = writeContext.Request,
EntitySet = writeContext.EntitySet,
Url = writeContext.Url,
FeedInstance = feedInstance
};
Uri feedSelfLink = linkBuilder.BuildFeedSelfLink(feedContext);
if (feedSelfLink != null)
{
feed.SetAnnotation(new AtomFeedMetadata() { SelfLink = new AtomLinkMetadata() { Relation = "self", Href = feedSelfLink } });
}
}
// TODO: Bug 467590: remove the hardcoded feed id. Get support for it from the model builder ?
feed.Id = "http://schemas.datacontract.org/2004/07/" + EntityCollectionType.FullName();
// If we have more OData format specific information apply it now, only if we are the root feed.
if (!writeContext.IsNested)
{
PageResult odataFeedAnnotations = feedInstance as PageResult;
if (odataFeedAnnotations != null)
{
feed.Count = odataFeedAnnotations.Count;
feed.NextPageLink = odataFeedAnnotations.NextPageLink;
}
else if (writeContext.Request != null)
{
feed.NextPageLink = writeContext.Request.GetNextPageLink();
long? inlineCount = writeContext.Request.GetInlineCount();
if (inlineCount.HasValue)
{
feed.Count = inlineCount.Value;
}
}
}
return feed;
}
private void WriteFeed(object graph, ODataWriter writer, ODataSerializerContext writeContext)
{
ODataSerializer entrySerializer = SerializerProvider.GetEdmTypeSerializer(_edmCollectionType.ElementType());
if (entrySerializer == null)
{
throw Error.NotSupported(SRResources.TypeCannotBeSerialized, _edmCollectionType.ElementType(), typeof(ODataMediaTypeFormatter).Name);
}
Contract.Assert(entrySerializer.ODataPayloadKind == ODataPayloadKind.Entry);
IEnumerable enumerable = graph as IEnumerable; // Data to serialize
if (enumerable != null)
{
ODataFeed feed = new ODataFeed();
if (writeContext.EntitySet != null)
{
IEntitySetLinkBuilder linkBuilder = SerializerProvider.EdmModel.GetEntitySetLinkBuilder(writeContext.EntitySet);
Uri feedSelfLink = linkBuilder.BuildFeedSelfLink(new FeedContext(writeContext.EntitySet, writeContext.UrlHelper, graph));
if (feedSelfLink != null)
{
feed.SetAnnotation(new AtomFeedMetadata() { SelfLink = new AtomLinkMetadata() { Relation = SelfLinkRelation, Href = feedSelfLink } });
}
}
// TODO: Bug 467590: remove the hardcoded feed id. Get support for it from the model builder ?
feed.Id = FeedNamespace + _edmCollectionType.FullName();
// If we have more OData format specific information apply it now.
ODataResult odataFeedAnnotations = graph as ODataResult;
if (odataFeedAnnotations != null)
{
feed.Count = odataFeedAnnotations.Count;
feed.NextPageLink = odataFeedAnnotations.NextPageLink;
}
writer.WriteStart(feed);
foreach (object entry in enumerable)
{
entrySerializer.WriteObjectInline(entry, writer, writeContext);
}
writer.WriteEnd();
}
}
private void WriteFeed(object graph, ODataWriter writer, ODataSerializerContext writeContext)
{
IEnumerable enumerable = graph as IEnumerable; // Data to serialize
if (enumerable != null)
{
ODataFeed feed = new ODataFeed();
if (writeContext.EntitySet != null)
{
IEdmModel model = writeContext.Model;
EntitySetLinkBuilderAnnotation linkBuilder = model.GetEntitySetLinkBuilder(writeContext.EntitySet);
FeedContext feedContext = new FeedContext
{
Request = writeContext.Request,
EntitySet = writeContext.EntitySet,
Url = writeContext.Url,
FeedInstance = graph
};
Uri feedSelfLink = linkBuilder.BuildFeedSelfLink(feedContext);
if (feedSelfLink != null)
{
feed.SetAnnotation(new AtomFeedMetadata() { SelfLink = new AtomLinkMetadata() { Relation = "self", Href = feedSelfLink } });
}
}
// TODO: Bug 467590: remove the hardcoded feed id. Get support for it from the model builder ?
feed.Id = "http://schemas.datacontract.org/2004/07/" + _edmCollectionType.FullName();
// Compute and save the NextPageLink for JSON Light streaming support.
Uri nextPageLink = null;
// If we have more OData format specific information apply it now.
PageResult odataFeedAnnotations = graph as PageResult;
if (odataFeedAnnotations != null)
{
feed.Count = odataFeedAnnotations.Count;
nextPageLink = odataFeedAnnotations.NextPageLink;
}
else
{
nextPageLink = writeContext.NextPageLink;
long? inlineCount = writeContext.InlineCount;
if (inlineCount.HasValue)
{
feed.Count = inlineCount.Value;
}
}
writer.WriteStart(feed);
foreach (object entry in enumerable)
{
if (entry == null)
{
throw Error.NotSupported(SRResources.NullElementInCollection);
}
ODataSerializer entrySerializer = SerializerProvider.GetODataPayloadSerializer(writeContext.Model, entry.GetType());
if (entrySerializer == null)
{
throw Error.NotSupported(SRResources.TypeCannotBeSerialized, entry.GetType(), typeof(ODataMediaTypeFormatter).Name);
}
Contract.Assert(entrySerializer.ODataPayloadKind == ODataPayloadKind.Entry);
entrySerializer.WriteObjectInline(entry, writer, writeContext);
}
// Subtle and suprising behavior: If the NextPageLink property is set before calling WriteStart(feed),
// the next page link will be written early in a manner not compatible with streaming=true. Instead, if
// the next page link is not set when calling WriteStart(feed) but is instead set later on that feed
// object before calling WriteEnd(), the next page link will be written at the end, as required for
// streaming=true support.
if (nextPageLink != null)
{
feed.NextPageLink = nextPageLink;
}
writer.WriteEnd();
}
}
private void WriteFeed(object graph, ODataWriter writer, ODataSerializerContext writeContext)
{
IEnumerable enumerable = graph as IEnumerable; // Data to serialize
if (enumerable != null)
{
ODataFeed feed = new ODataFeed();
if (writeContext.EntitySet != null)
{
IEntitySetLinkBuilder linkBuilder = SerializerProvider.EdmModel.GetEntitySetLinkBuilder(writeContext.EntitySet);
FeedContext feedContext = new FeedContext
{
EntitySet = writeContext.EntitySet,
UrlHelper = writeContext.UrlHelper,
PathHandler = writeContext.PathHandler,
FeedInstance = graph
};
Uri feedSelfLink = linkBuilder.BuildFeedSelfLink(feedContext);
if (feedSelfLink != null)
{
feed.SetAnnotation(new AtomFeedMetadata() { SelfLink = new AtomLinkMetadata() { Relation = SelfLinkRelation, Href = feedSelfLink } });
}
}
// TODO: Bug 467590: remove the hardcoded feed id. Get support for it from the model builder ?
feed.Id = FeedNamespace + _edmCollectionType.FullName();
// If we have more OData format specific information apply it now.
ODataResult odataFeedAnnotations = graph as ODataResult;
if (odataFeedAnnotations != null)
{
feed.Count = odataFeedAnnotations.Count;
feed.NextPageLink = odataFeedAnnotations.NextPageLink;
}
else
{
object nextPageLinkPropertyValue;
HttpRequestMessage request = writeContext.Request;
if (request != null && request.Properties.TryGetValue(ODataQueryOptions.NextPageLinkPropertyKey, out nextPageLinkPropertyValue))
{
Uri nextPageLink = nextPageLinkPropertyValue as Uri;
if (nextPageLink != null)
{
feed.NextPageLink = nextPageLink;
}
}
}
writer.WriteStart(feed);
foreach (object entry in enumerable)
{
if (entry == null)
{
throw Error.NotSupported(SRResources.NullElementInCollection);
}
ODataSerializer entrySerializer = SerializerProvider.GetODataPayloadSerializer(entry.GetType());
if (entrySerializer == null)
{
throw Error.NotSupported(SRResources.TypeCannotBeSerialized, entry.GetType(), typeof(ODataMediaTypeFormatter).Name);
}
Contract.Assert(entrySerializer.ODataPayloadKind == ODataPayloadKind.Entry);
entrySerializer.WriteObjectInline(entry, writer, writeContext);
}
writer.WriteEnd();
}
}
private void WriteFeedElements(IExpandedResult expanded, IEnumerator elements, ResourceType expectedType, string title, Uri relativeUri, Uri absoluteUri, bool hasMoved, bool topLevel)
{
ODataFeed feed = new ODataFeed {
Id = absoluteUri.AbsoluteUri
};
AtomFeedMetadata annotation = new AtomFeedMetadata();
feed.SetAnnotation<AtomFeedMetadata>(annotation);
AtomTextConstruct construct = new AtomTextConstruct {
Text = title
};
annotation.Title = construct;
AtomLinkMetadata metadata2 = new AtomLinkMetadata {
Href = relativeUri,
Title = title
};
annotation.SelfLink = metadata2;
bool flag = false;
if (topLevel && (base.RequestDescription.CountOption == RequestQueryCountOption.Inline))
{
flag = this.contentFormat == ODataFormat.VerboseJson;
if (!flag)
{
feed.Count = new long?(base.RequestDescription.CountValue);
}
}
this.odataWriter.WriteStart(feed);
try
{
object lastObject = null;
IExpandedResult skipTokenExpandedResult = null;
while (hasMoved)
{
object current = elements.Current;
IExpandedResult skipToken = base.GetSkipToken(expanded);
if (current != null)
{
IExpandedResult result3 = current as IExpandedResult;
if (result3 != null)
{
expanded = result3;
current = Serializer.GetExpandedElement(expanded);
skipToken = base.GetSkipToken(expanded);
}
this.WriteEntry(expanded, current, true, expectedType);
}
hasMoved = elements.MoveNext();
lastObject = current;
skipTokenExpandedResult = skipToken;
}
if (flag)
{
feed.Count = new long?(base.RequestDescription.CountValue);
}
if (base.NeedNextPageLink(elements))
{
feed.NextPageLink = base.GetNextLinkUri(lastObject, skipTokenExpandedResult, absoluteUri);
}
}
finally
{
if (!topLevel)
{
WebUtil.Dispose(elements);
}
}
this.odataWriter.WriteEnd();
}
