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();
}
}
/// <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.
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 static void AddFeedMetadata(EntitySetInstance payloadElement, ODataFeed feed)
{
AtomFeedMetadata metadata = CreateFeedMetadata(payloadElement.Annotations.OfType <XmlTreeAnnotation>(), feed);
// Fix up metadata for baselining
metadata = metadata.Fixup();
if (metadata != null)
{
feed.SetAnnotation <AtomFeedMetadata>(metadata);
}
}
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));
}
public static AtomFeedMetadata Atom(this ODataFeed feed)
{
ExceptionUtils.CheckArgumentNotNull <ODataFeed>(feed, "feed");
AtomFeedMetadata annotation = feed.GetAnnotation <AtomFeedMetadata>();
if (annotation == null)
{
annotation = new AtomFeedMetadata();
feed.SetAnnotation <AtomFeedMetadata>(annotation);
}
return(annotation);
}
/// <summary>
/// Creates the materializer feed.
/// </summary>
/// <param name="feed">The feed.</param>
/// <param name="entries">The entries.</param>
/// <returns>The materializer feed.</returns>
public static MaterializerFeed CreateFeed(ODataFeed feed, IEnumerable <ODataEntry> entries)
{
Debug.Assert(feed.GetAnnotation <IEnumerable <ODataEntry> >() == null, "Feed state has already been created.");
if (entries == null)
{
entries = Enumerable.Empty <ODataEntry>();
}
else
{
feed.SetAnnotation <IEnumerable <ODataEntry> >(entries);
}
return(new MaterializerFeed(feed, entries));
}
public static AtomFeedMetadata Atom(this ODataFeed feed)
{
ExceptionUtils.CheckArgumentNotNull(feed, "feed");
AtomFeedMetadata feedMetadata = feed.GetAnnotation <AtomFeedMetadata>();
if (feedMetadata == null)
{
feedMetadata = new AtomFeedMetadata();
feed.SetAnnotation(feedMetadata);
}
return(feedMetadata);
}
protected override bool ReadAtFeedStartImplementation()
{
if ((this.atomEntryAndFeedDeserializer.XmlReader.NodeType == XmlNodeType.EndElement) || this.CurrentFeedState.FeedElementEmpty)
{
IODataAtomReaderFeedState currentFeedState = this.CurrentFeedState;
ODataFeed currentFeed = base.CurrentFeed;
if (this.atomInputContext.MessageReaderSettings.EnableAtomMetadataReading)
{
currentFeed.SetAnnotation <AtomFeedMetadata>(currentFeedState.AtomFeedMetadata);
}
this.ReplaceScope(ODataReaderState.FeedEnd);
}
else
{
this.ReadEntryStart();
}
return(true);
}
private void Read(Lazy <ODataReader> lazyReader)
{
foreach (var state in this.expectedStates)
{
lazyReader.Value.Read();
ExceptionUtilities.Assert(lazyReader.Value.State == state, "Expected %1, Found %2", state, lazyReader.Value.State);
switch (state)
{
case ODataReaderState.FeedStart:
if (readItems.Count > 0)
{
ODataNavigationLink navLink = (ODataNavigationLink)readItems.Peek();
var annotation = navLink.GetAnnotation <ODataNavigationLinkExpandedItemObjectModelAnnotation>();
if (annotation == null)
{
annotation = new ODataNavigationLinkExpandedItemObjectModelAnnotation();
navLink.SetAnnotation(annotation);
}
annotation.ExpandedItem = lazyReader.Value.Item;
}
readItems.Push(lazyReader.Value.Item);
break;
case ODataReaderState.EntryStart:
var currentEntry = (ODataEntry)lazyReader.Value.Item;
if (readItems.Count > 0)
{
ODataFeed feed = readItems.Peek() as ODataFeed;
if (feed != null)
{
var annotation = feed.GetAnnotation <ODataFeedEntriesObjectModelAnnotation>();
if (annotation == null)
{
annotation = new ODataFeedEntriesObjectModelAnnotation();
feed.SetAnnotation(annotation);
}
annotation.Add((ODataEntry)lazyReader.Value.Item);
}
else
{
ODataNavigationLink navLink = (ODataNavigationLink)readItems.Peek();
var annotation = navLink.GetAnnotation <ODataNavigationLinkExpandedItemObjectModelAnnotation>();
if (annotation == null)
{
annotation = new ODataNavigationLinkExpandedItemObjectModelAnnotation();
navLink.SetAnnotation(annotation);
}
annotation.ExpandedItem = currentEntry;
}
}
readItems.Push(currentEntry);
break;
case ODataReaderState.NavigationLinkStart:
ODataEntry entry = (ODataEntry)readItems.Peek();
var navLinksAnnotation = entry.GetAnnotation <ODataEntryNavigationLinksObjectModelAnnotation>();
if (navLinksAnnotation == null)
{
navLinksAnnotation = new ODataEntryNavigationLinksObjectModelAnnotation();
entry.SetAnnotation(navLinksAnnotation);
}
navLinksAnnotation.Add((ODataNavigationLink)lazyReader.Value.Item, entry.Properties.Count() + navLinksAnnotation.Count);
readItems.Push(lazyReader.Value.Item);
break;
case ODataReaderState.EntryEnd:
case ODataReaderState.FeedEnd:
case ODataReaderState.NavigationLinkEnd:
if (readItems.Count() > 1)
{
readItems.Pop();
}
break;
}
}
this.expectedStates.Clear();
}
/// <summary>
/// Writes the feed element for the atom payload.
/// </summary>
/// <param name="expanded">Expanded properties for the result.</param>
/// <param name="elements">Collection of entries in the feed element.</param>
/// <param name="expectedType">ExpectedType of the elements in the collection.</param>
/// <param name="title">Title of the feed element.</param>
/// <param name="getRelativeUri">Callback to get the relative uri of the feed.</param>
/// <param name="getAbsoluteUri">Callback to get the absolute uri of the feed.</param>
/// <param name="topLevel">True if the feed is the top level feed, otherwise false for the inner expanded feed.</param>
private void WriteFeedElements(
IExpandedResult expanded,
QueryResultInfo elements,
ResourceType expectedType,
string title,
Func <Uri> getRelativeUri,
Func <Uri> getAbsoluteUri,
bool topLevel)
{
Debug.Assert(elements != null, "elements != null");
Debug.Assert(expectedType != null && expectedType.ResourceTypeKind == ResourceTypeKind.EntityType, "expectedType != null && expectedType.ResourceTypeKind == ResourceTypeKind.EntityType");
Debug.Assert(!string.IsNullOrEmpty(title), "!string.IsNullOrEmpty(title)");
ODataFeed feed = new ODataFeed();
feed.SetSerializationInfo(new ODataFeedAndEntrySerializationInfo {
NavigationSourceName = this.CurrentContainer.Name, NavigationSourceEntityTypeName = this.CurrentContainer.ResourceType.FullName, ExpectedTypeName = expectedType.FullName
});
// Write the other elements for the feed
this.PayloadMetadataPropertyManager.SetId(feed, () => getAbsoluteUri());
#pragma warning disable 618
if (this.contentFormat == ODataFormat.Atom)
#pragma warning restore 618
{
// Create the atom feed metadata and set the self link and title value.
AtomFeedMetadata feedMetadata = new AtomFeedMetadata();
feed.SetAnnotation(feedMetadata);
feedMetadata.Title = new AtomTextConstruct {
Text = title
};
feedMetadata.SelfLink = new AtomLinkMetadata {
Href = getRelativeUri(), Title = title
};
}
// support for $count
// in ATOM we write it at the beginning (we always have)
// in JSON for backward compatiblity reasons we write it at the end, so we must not fill it here.
if (topLevel && this.RequestDescription.CountOption == RequestQueryCountOption.CountQuery)
{
feed.Count = this.RequestDescription.CountValue;
}
var feedArgs = elements.GetDataServiceODataWriterFeedArgs(feed, this.Service.OperationContext);
this.dataServicesODataWriter.WriteStart(feedArgs);
object lastObject = null;
IExpandedResult lastExpandedSkipToken = null;
while (elements.HasMoved)
{
object o = elements.Current;
IExpandedResult skipToken = this.GetSkipToken(expanded);
if (o != null)
{
IExpandedResult expandedO = o as IExpandedResult;
if (expandedO != null)
{
expanded = expandedO;
o = GetExpandedElement(expanded);
skipToken = this.GetSkipToken(expanded);
}
this.WriteEntry(expanded, o, true /*resourceInstanceInFeed*/, expectedType);
}
elements.MoveNext();
lastObject = o;
lastExpandedSkipToken = skipToken;
}
// After looping through the objects in the sequence, decide if we need to write the next
// page link and if yes, write it by invoking the delegate
if (this.NeedNextPageLink(elements))
{
this.PayloadMetadataPropertyManager.SetNextPageLink(
feed,
this.AbsoluteServiceUri,
this.GetNextLinkUri(lastObject, lastExpandedSkipToken, getAbsoluteUri()));
}
this.dataServicesODataWriter.WriteEnd(feedArgs);
#if ASTORIA_FF_CALLBACKS
this.Service.InternalOnWriteFeed(feed);
#endif
}
internal static ODataItem ReadEntryOrFeed(ODataReader odataReader, ODataDeserializerContext readContext)
{
ODataItem topLevelItem = null;
Stack <ODataItem> itemsStack = new Stack <ODataItem>();
while (odataReader.Read())
{
switch (odataReader.State)
{
case ODataReaderState.EntryStart:
ODataEntry entry = (ODataEntry)odataReader.Item;
ODataEntryAnnotation entryAnnotation = null;
if (entry != null)
{
entryAnnotation = new ODataEntryAnnotation();
entry.SetAnnotation(entryAnnotation);
}
if (itemsStack.Count == 0)
{
Contract.Assert(entry != null, "The top-level entry can never be null.");
topLevelItem = entry;
}
else
{
ODataItem parentItem = itemsStack.Peek();
ODataFeed parentFeed = parentItem as ODataFeed;
if (parentFeed != null)
{
ODataFeedAnnotation parentFeedAnnotation = parentFeed.GetAnnotation <ODataFeedAnnotation>();
Contract.Assert(parentFeedAnnotation != null, "Every feed we added to the stack should have the feed annotation on it.");
parentFeedAnnotation.Add(entry);
}
else
{
ODataNavigationLink parentNavigationLink = (ODataNavigationLink)parentItem;
ODataNavigationLinkAnnotation parentNavigationLinkAnnotation = parentNavigationLink.GetAnnotation <ODataNavigationLinkAnnotation>();
Contract.Assert(parentNavigationLinkAnnotation != null, "Every navigation link we added to the stack should have the navigation link annotation on it.");
Contract.Assert(parentNavigationLink.IsCollection == false, "Only singleton navigation properties can contain entry as their child.");
Contract.Assert(parentNavigationLinkAnnotation.Count == 0, "Each navigation property can contain only one entry as its direct child.");
parentNavigationLinkAnnotation.Add(entry);
}
}
itemsStack.Push(entry);
RecurseEnter(readContext);
break;
case ODataReaderState.EntryEnd:
Contract.Assert(itemsStack.Count > 0 && itemsStack.Peek() == odataReader.Item, "The entry which is ending should be on the top of the items stack.");
itemsStack.Pop();
RecurseLeave(readContext);
break;
case ODataReaderState.NavigationLinkStart:
ODataNavigationLink navigationLink = (ODataNavigationLink)odataReader.Item;
Contract.Assert(navigationLink != null, "Navigation link should never be null.");
navigationLink.SetAnnotation(new ODataNavigationLinkAnnotation());
Contract.Assert(itemsStack.Count > 0, "Navigation link can't appear as top-level item.");
{
ODataEntry parentEntry = (ODataEntry)itemsStack.Peek();
ODataEntryAnnotation parentEntryAnnotation = parentEntry.GetAnnotation <ODataEntryAnnotation>();
Contract.Assert(parentEntryAnnotation != null, "Every entry we added to the stack should have the entry annotation on it.");
parentEntryAnnotation.Add(navigationLink);
}
itemsStack.Push(navigationLink);
RecurseEnter(readContext);
break;
case ODataReaderState.NavigationLinkEnd:
Contract.Assert(itemsStack.Count > 0 && itemsStack.Peek() == odataReader.Item, "The navigation link which is ending should be on the top of the items stack.");
itemsStack.Pop();
RecurseLeave(readContext);
break;
case ODataReaderState.FeedStart:
ODataFeed feed = (ODataFeed)odataReader.Item;
Contract.Assert(feed != null, "Feed should never be null.");
feed.SetAnnotation(new ODataFeedAnnotation());
if (itemsStack.Count > 0)
{
ODataNavigationLink parentNavigationLink = (ODataNavigationLink)itemsStack.Peek();
Contract.Assert(parentNavigationLink != null, "this has to be an inner feed. inner feeds always have a navigation link.");
ODataNavigationLinkAnnotation parentNavigationLinkAnnotation = parentNavigationLink.GetAnnotation <ODataNavigationLinkAnnotation>();
Contract.Assert(parentNavigationLinkAnnotation != null, "Every navigation link we added to the stack should have the navigation link annotation on it.");
Contract.Assert(parentNavigationLink.IsCollection == true, "Only collection navigation properties can contain feed as their child.");
parentNavigationLinkAnnotation.Add(feed);
}
else
{
topLevelItem = feed;
}
itemsStack.Push(feed);
RecurseEnter(readContext);
break;
case ODataReaderState.FeedEnd:
Contract.Assert(itemsStack.Count > 0 && itemsStack.Peek() == odataReader.Item, "The feed which is ending should be on the top of the items stack.");
itemsStack.Pop();
RecurseLeave(readContext);
break;
case ODataReaderState.EntityReferenceLink:
ODataEntityReferenceLink entityReferenceLink = (ODataEntityReferenceLink)odataReader.Item;
Contract.Assert(entityReferenceLink != null, "Entity reference link should never be null.");
Contract.Assert(itemsStack.Count > 0, "Entity reference link should never be reported as top-level item.");
{
ODataNavigationLink parentNavigationLink = (ODataNavigationLink)itemsStack.Peek();
ODataNavigationLinkAnnotation parentNavigationLinkAnnotation = parentNavigationLink.GetAnnotation <ODataNavigationLinkAnnotation>();
Contract.Assert(parentNavigationLinkAnnotation != null, "Every navigation link we added to the stack should have the navigation link annotation on it.");
parentNavigationLinkAnnotation.Add(entityReferenceLink);
}
break;
default:
Contract.Assert(false, "We should never get here, it means the ODataReader reported a wrong state.");
break;
}
}
Contract.Assert(odataReader.State == ODataReaderState.Completed, "We should have consumed all of the input by now.");
Contract.Assert(topLevelItem != null, "A top level entry or feed should have been read by now.");
return(topLevelItem);
}
public void FeedAndEntryUpdatedTimeTests()
{
ODataFeed defaultFeedWithEmptyMetadata = ObjectModelUtils.CreateDefaultFeed();
defaultFeedWithEmptyMetadata.SetAnnotation <AtomFeedMetadata>(new AtomFeedMetadata());
ODataEntry defaultEntryWithEmptyMetadata = ObjectModelUtils.CreateDefaultEntry();
defaultEntryWithEmptyMetadata.SetAnnotation <AtomEntryMetadata>(new AtomEntryMetadata());
IEnumerable <PayloadWriterTestDescriptor <ODataItem> > testPayloads =
new[]
{
new PayloadWriterTestDescriptor <ODataItem>(this.Settings, ObjectModelUtils.CreateDefaultFeed()),
new PayloadWriterTestDescriptor <ODataItem>(this.Settings, defaultFeedWithEmptyMetadata),
new PayloadWriterTestDescriptor <ODataItem>(this.Settings, ObjectModelUtils.CreateDefaultFeedWithAtomMetadata()),
}.PayloadCases(WriterPayloads.FeedPayloads)
.Concat((new[]
{
new PayloadWriterTestDescriptor <ODataItem>(this.Settings, ObjectModelUtils.CreateDefaultEntry()),
new PayloadWriterTestDescriptor <ODataItem>(this.Settings, defaultEntryWithEmptyMetadata),
new PayloadWriterTestDescriptor <ODataItem>(this.Settings, ObjectModelUtils.CreateDefaultEntryWithAtomMetadata()),
}.PayloadCases(WriterPayloads.EntryPayloads)));
this.CombinatorialEngineProvider.RunCombinations(
testPayloads,
this.WriterTestConfigurationProvider.AtomFormatConfigurationsWithIndent.Where(tc => !tc.IsRequest),
(testPayload, testConfiguration) =>
{
testConfiguration = testConfiguration.Clone();
testConfiguration.MessageWriterSettings.SetServiceDocumentUri(ServiceDocumentUri);
string lastUpdatedTimeStr = null;
using (var memoryStream = new MemoryStream())
{
using (var testMemoryStream = TestWriterUtils.CreateTestStream(testConfiguration, memoryStream, ignoreDispose: true))
{
bool feedWriter = testPayload.PayloadItems[0] is ODataFeed;
TestMessage testMessage = null;
Exception exception = TestExceptionUtils.RunCatching(() =>
{
using (var messageWriter = TestWriterUtils.CreateMessageWriter(testMemoryStream, testConfiguration, this.Assert, out testMessage, null, testPayload.Model))
{
ODataWriter writer = messageWriter.CreateODataWriter(feedWriter);
TestWriterUtils.WritePayload(messageWriter, writer, true, testPayload.PayloadItems, testPayload.ThrowUserExceptionAt);
}
});
this.Assert.IsNull(exception, "Received exception but expected none.");
}
memoryStream.Position = 0;
XElement result = XElement.Load(memoryStream);
foreach (XElement updated in result.Descendants(((XNamespace)TestAtomConstants.AtomNamespace) + "updated"))
{
if (updated.Value != ObjectModelUtils.DefaultFeedUpdated && updated.Value != ObjectModelUtils.DefaultEntryUpdated)
{
if (lastUpdatedTimeStr == null)
{
lastUpdatedTimeStr = updated.Value;
}
else
{
this.Assert.AreEqual(lastUpdatedTimeStr, updated.Value, "<atom:updated> should contain the same value.");
}
}
}
}
});
}
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();
}
}
/// <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="feedType">The EDM type of 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, IEdmCollectionTypeReference feedType,
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,
RequestContext = writeContext.RequestContext,
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/" + feedType.FullName();
if (writeContext.ExpandedEntity == null)
{
// If we have more OData format specific information apply it now, only if we are the root feed.
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.ODataProperties().NextLink;
long?inlineCount = writeContext.Request.ODataProperties().TotalCount;
if (inlineCount.HasValue)
{
feed.Count = inlineCount.Value;
}
}
}
else
{
// nested feed
ITruncatedCollection truncatedCollection = feedInstance as ITruncatedCollection;
if (truncatedCollection != null && truncatedCollection.IsTruncated)
{
feed.NextPageLink = GetNestedNextPageLink(writeContext, truncatedCollection.PageSize);
}
}
return(feed);
}
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();
}
/// <summary>
/// Reads an entry from the <paramref name="odataReader"/> and all it's children including expanded entries and feeds.
/// </summary>
/// <param name="odataReader">The ODataReader to read from.</param>
/// <param name="topLevelSegmentInfo">The segment info for the top-level entry to read.</param>
/// <returns>The <see cref="ODataEntry"/> with annotations which store the navigation links and their expanded values.</returns>
private ODataEntry ReadEntry(ODataReader odataReader, SegmentInfo topLevelSegmentInfo)
{
Debug.Assert(odataReader != null, "odataReader != null");
Debug.Assert(odataReader.State == ODataReaderState.Start, "The ODataReader must not have been used yet.");
Debug.Assert(topLevelSegmentInfo != null, "topLevelSegmentInfo != null");
ODataEntry topLevelEntry = null;
Stack <ODataItem> itemsStack = new Stack <ODataItem>();
while (odataReader.Read())
{
// Don't let the item stack grow larger than we can process later. Also lets us to fail and report the recursion depth limit error before ODL does.
if (itemsStack.Count >= RecursionLimit)
{
throw DataServiceException.CreateDeepRecursion(RecursionLimit);
}
switch (odataReader.State)
{
case ODataReaderState.EntryStart:
ODataEntry entry = (ODataEntry)odataReader.Item;
ODataEntryAnnotation entryAnnotation = null;
if (entry != null)
{
entryAnnotation = new ODataEntryAnnotation();
entry.SetAnnotation(entryAnnotation);
}
if (itemsStack.Count == 0)
{
Debug.Assert(entry != null, "The top-level entry can never be null.");
topLevelEntry = entry;
// For top-level entry, create the entry resource here.
// This is needed since the creation of the resource may fail (especially if this is an update in which case
// we evaluate the URL query, which may return no results and thus we would fail with 404)
// and we need to report that failure rather then potential other failures caused by the properties in the entry in question.
this.CreateEntityResource(topLevelSegmentInfo, entry, entryAnnotation, /*topLevel*/ true);
}
else
{
ODataItem parentItem = itemsStack.Peek();
ODataFeed parentFeed = parentItem as ODataFeed;
if (parentFeed != null)
{
ODataFeedAnnotation parentFeedAnnotation = parentFeed.GetAnnotation <ODataFeedAnnotation>();
Debug.Assert(parentFeedAnnotation != null, "Every feed we added to the stack should have the feed annotation on it.");
parentFeedAnnotation.Add(entry);
}
else
{
ODataNavigationLink parentNavigationLink = (ODataNavigationLink)parentItem;
ODataNavigationLinkAnnotation parentNavigationLinkAnnotation = parentNavigationLink.GetAnnotation <ODataNavigationLinkAnnotation>();
Debug.Assert(parentNavigationLinkAnnotation != null, "Every navigation link we added to the stack should have the navigation link annotation on it.");
Debug.Assert(parentNavigationLink.IsCollection == false, "Only singleton navigation properties can contain entry as their child.");
Debug.Assert(parentNavigationLinkAnnotation.Count == 0, "Each navigation property can contain only one entry as its direct child.");
parentNavigationLinkAnnotation.Add(entry);
}
}
itemsStack.Push(entry);
break;
case ODataReaderState.EntryEnd:
Debug.Assert(itemsStack.Count > 0 && itemsStack.Peek() == odataReader.Item, "The entry which is ending should be on the top of the items stack.");
itemsStack.Pop();
break;
case ODataReaderState.NavigationLinkStart:
ODataNavigationLink navigationLink = (ODataNavigationLink)odataReader.Item;
Debug.Assert(navigationLink != null, "Navigation link should never be null.");
navigationLink.SetAnnotation(new ODataNavigationLinkAnnotation());
Debug.Assert(itemsStack.Count > 0, "Navigation link can't appear as top-level item.");
{
ODataEntry parentEntry = (ODataEntry)itemsStack.Peek();
ODataEntryAnnotation parentEntryAnnotation = parentEntry.GetAnnotation <ODataEntryAnnotation>();
Debug.Assert(parentEntryAnnotation != null, "Every entry we added to the stack should have the navigation link annotation on it.");
parentEntryAnnotation.Add(navigationLink);
}
itemsStack.Push(navigationLink);
break;
case ODataReaderState.NavigationLinkEnd:
Debug.Assert(itemsStack.Count > 0 && itemsStack.Peek() == odataReader.Item, "The navigation link which is ending should be on the top of the items stack.");
itemsStack.Pop();
break;
case ODataReaderState.FeedStart:
ODataFeed feed = (ODataFeed)odataReader.Item;
Debug.Assert(feed != null, "Feed should never be null.");
feed.SetAnnotation(new ODataFeedAnnotation());
Debug.Assert(itemsStack.Count > 0, "Since we always start reading entry, we should never get a feed as the top-level item.");
{
ODataNavigationLink parentNavigationLink = (ODataNavigationLink)itemsStack.Peek();
ODataNavigationLinkAnnotation parentNavigationLinkAnnotation = parentNavigationLink.GetAnnotation <ODataNavigationLinkAnnotation>();
Debug.Assert(parentNavigationLinkAnnotation != null, "Every navigation link we added to the stack should have the navigation link annotation on it.");
Debug.Assert(parentNavigationLink.IsCollection == true, "Only collection navigation properties can contain feed as their child.");
parentNavigationLinkAnnotation.Add(feed);
}
itemsStack.Push(feed);
break;
case ODataReaderState.FeedEnd:
Debug.Assert(itemsStack.Count > 0 && itemsStack.Peek() == odataReader.Item, "The feed which is ending should be on the top of the items stack.");
itemsStack.Pop();
break;
case ODataReaderState.EntityReferenceLink:
ODataEntityReferenceLink entityReferenceLink = (ODataEntityReferenceLink)odataReader.Item;
Debug.Assert(entityReferenceLink != null, "Entity reference link should never be null.");
Debug.Assert(itemsStack.Count > 0, "Entity reference link should never be reported as top-level item.");
{
ODataNavigationLink parentNavigationLink = (ODataNavigationLink)itemsStack.Peek();
ODataNavigationLinkAnnotation parentNavigationLinkAnnotation = parentNavigationLink.GetAnnotation <ODataNavigationLinkAnnotation>();
Debug.Assert(parentNavigationLinkAnnotation != null, "Every navigation link we added to the stack should have the navigation link annotation on it.");
parentNavigationLinkAnnotation.Add(entityReferenceLink);
}
break;
default:
Debug.Assert(false, "We should never get here, it means the ODataReader reported a wrong state.");
break;
}
}
Debug.Assert(odataReader.State == ODataReaderState.Completed, "We should have consumed all of the input by now.");
Debug.Assert(topLevelEntry != null, "A top level entry should have been read by now.");
return(topLevelEntry);
}
private ODataEntry ReadEntry(ODataReader odataReader, System.Data.Services.SegmentInfo topLevelSegmentInfo)
{
ODataEntry entry = null;
Stack <ODataItem> stack = new Stack <ODataItem>();
while (odataReader.Read())
{
if (stack.Count >= 100)
{
throw DataServiceException.CreateDeepRecursion(100);
}
switch (odataReader.State)
{
case ODataReaderState.FeedStart:
{
ODataFeed feed2 = (ODataFeed)odataReader.Item;
feed2.SetAnnotation <ODataFeedAnnotation>(new ODataFeedAnnotation());
ODataNavigationLink link3 = (ODataNavigationLink)stack.Peek();
link3.GetAnnotation <ODataNavigationLinkAnnotation>().Add(feed2);
stack.Push(feed2);
break;
}
case ODataReaderState.FeedEnd:
stack.Pop();
break;
case ODataReaderState.EntryStart:
{
ODataEntry entry2 = (ODataEntry)odataReader.Item;
ODataEntryAnnotation annotation = null;
if (entry2 != null)
{
annotation = new ODataEntryAnnotation();
entry2.SetAnnotation <ODataEntryAnnotation>(annotation);
}
if (stack.Count == 0)
{
entry = entry2;
this.CreateEntityResource(topLevelSegmentInfo, entry2, annotation, true);
}
else
{
ODataItem item = stack.Peek();
ODataFeed feed = item as ODataFeed;
if (feed != null)
{
feed.GetAnnotation <ODataFeedAnnotation>().Add(entry2);
}
else
{
ODataNavigationLink link = (ODataNavigationLink)item;
link.GetAnnotation <ODataNavigationLinkAnnotation>().Add(entry2);
}
}
stack.Push(entry2);
break;
}
case ODataReaderState.EntryEnd:
stack.Pop();
break;
case ODataReaderState.NavigationLinkStart:
{
ODataNavigationLink link2 = (ODataNavigationLink)odataReader.Item;
link2.SetAnnotation <ODataNavigationLinkAnnotation>(new ODataNavigationLinkAnnotation());
ODataEntry entry3 = (ODataEntry)stack.Peek();
entry3.GetAnnotation <ODataEntryAnnotation>().Add(link2);
stack.Push(link2);
break;
}
case ODataReaderState.NavigationLinkEnd:
stack.Pop();
break;
case ODataReaderState.EntityReferenceLink:
{
ODataEntityReferenceLink link4 = (ODataEntityReferenceLink)odataReader.Item;
ODataNavigationLink link5 = (ODataNavigationLink)stack.Peek();
link5.GetAnnotation <ODataNavigationLinkAnnotation>().Add(link4);
break;
}
}
}
return(entry);
}