/// <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(ODataResourceSet feed, IEnumerable <ODataResource> entries)
{
Debug.Assert(feed.GetAnnotation <IEnumerable <ODataResource> >() == null, "Feed state has already been created.");
if (entries == null)
{
entries = Enumerable.Empty <ODataResource>();
}
else
{
feed.SetAnnotation <IEnumerable <ODataResource> >(entries);
}
return(new MaterializerFeed(feed, entries));
}
private void WriteFeed(ODataWriter writer, ODataResourceSet resourceCollection)
{
writer.WriteStart(resourceCollection);
var annotation = resourceCollection.GetAnnotation <ODataFeedEntriesObjectModelAnnotation>();
if (annotation != null)
{
foreach (var entry in annotation)
{
this.WriteEntry(writer, entry);
}
}
writer.WriteEnd();
}
private void WriteFeed(ODataWriter writer, Lazy <ODataReader> lazyReader, ODataResourceSet feed)
{
this.WriteStart(writer, feed);
var annotation = feed.GetAnnotation <ODataFeedEntriesObjectModelAnnotation>();
if (annotation != null)
{
int count = annotation.Count;
for (int i = 0; i < count; ++i)
{
this.WriteEntry(writer, lazyReader, annotation[i]);
}
}
this.WriteEnd(writer, ODataReaderState.ResourceSetEnd);
this.Read(lazyReader);
}
/// <summary>
/// Gets all entries attached to the <paramref name="feed"/> via the
/// <see cref="ODataFeedEntriesObjectModelAnnotation"/> annotation.
/// </summary>
/// <param name="feed">The <see cref="ODataResourceSet"/> to get the entries for.</param>
/// <returns>A list of entries or null if none were found.</returns>
public static IList <ODataItem> Entries(this ODataResourceSet resourceCollection)
{
ExceptionUtilities.CheckArgumentNotNull(resourceCollection, "feed");
return(resourceCollection.GetAnnotation <ODataFeedEntriesObjectModelAnnotation>());
}
/// <summary>
/// Visits a feed item.
/// </summary>
/// <param name="feed">The feed to visit.</param>
protected override ODataPayloadElement VisitFeed(ODataResourceSet resourceCollection)
{
ODataPayloadElement payloadElement = base.VisitFeed(resourceCollection);
ODataFeedPayloadOrderObjectModelAnnotation payloadOrderFeedAnnotation = resourceCollection.GetAnnotation <ODataFeedPayloadOrderObjectModelAnnotation>();
if (payloadOrderFeedAnnotation != null)
{
PayloadOrderODataPayloadElementAnnotation payloadOrderElementAnnotation = new PayloadOrderODataPayloadElementAnnotation();
payloadOrderElementAnnotation.PayloadItems.AddRange(payloadOrderFeedAnnotation.PayloadItems);
payloadElement.Add(payloadOrderElementAnnotation);
}
return(payloadElement);
}
/// <summary>
/// Gets the materializer feed.
/// </summary>
/// <param name="feed">The feed.</param>
/// <returns>The materializer feed.</returns>
public static MaterializerFeed GetFeed(ODataResourceSet feed)
{
IEnumerable <ODataResource> entries = feed.GetAnnotation <IEnumerable <ODataResource> >();
return(new MaterializerFeed(feed, entries));
}
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.ResourceSetStart:
if (readItems.Count > 0)
{
ODataNestedResourceInfo navLink = (ODataNestedResourceInfo)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.ResourceStart:
var currentEntry = (ODataResource)lazyReader.Value.Item;
if (readItems.Count > 0)
{
ODataResourceSet feed = readItems.Peek() as ODataResourceSet;
if (feed != null)
{
var annotation = feed.GetAnnotation <ODataFeedEntriesObjectModelAnnotation>();
if (annotation == null)
{
annotation = new ODataFeedEntriesObjectModelAnnotation();
feed.SetAnnotation(annotation);
}
annotation.Add((ODataResource)lazyReader.Value.Item);
}
else
{
ODataNestedResourceInfo navLink = (ODataNestedResourceInfo)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.NestedResourceInfoStart:
ODataResource entry = (ODataResource)readItems.Peek();
var navLinksAnnotation = entry.GetAnnotation <ODataEntryNavigationLinksObjectModelAnnotation>();
if (navLinksAnnotation == null)
{
navLinksAnnotation = new ODataEntryNavigationLinksObjectModelAnnotation();
entry.SetAnnotation(navLinksAnnotation);
}
navLinksAnnotation.Add((ODataNestedResourceInfo)lazyReader.Value.Item, entry.Properties.Count() + navLinksAnnotation.Count);
readItems.Push(lazyReader.Value.Item);
break;
case ODataReaderState.ResourceEnd:
case ODataReaderState.ResourceSetEnd:
case ODataReaderState.NestedResourceInfoEnd:
if (readItems.Count() > 1)
{
readItems.Pop();
}
break;
}
}
this.expectedStates.Clear();
}