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();
}
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>
/// Visits an entity instance: creates a new ODataEntry instance, collects and sets all the properties,
/// calls ODataWriter.WriteStart(), then visits the navigation properties and calls ODataWriter.WriteEnd()
/// </summary>
/// <param name="payloadElement">The entity instance to write.</param>
public override void Visit(EntityInstance payloadElement)
{
// create an ODataEntry and write it
string editLinkString = payloadElement.GetEditLink();
string selfLinkString = payloadElement.GetSelfLink();
string entryId = payloadElement.Id;
var entry = new ODataEntry()
{
Id = string.IsNullOrEmpty(entryId) ? null : new Uri(entryId),
ETag = payloadElement.ETag,
EditLink = string.IsNullOrEmpty(editLinkString) ? null : new Uri(editLinkString),
ReadLink = string.IsNullOrEmpty(selfLinkString) ? null : new Uri(selfLinkString),
TypeName = payloadElement.FullTypeName,
Properties = new List<ODataProperty>(),
SerializationInfo = new ODataFeedAndEntrySerializationInfo()
{
NavigationSourceEntityTypeName = payloadElement.FullTypeName,
NavigationSourceName = "MySet",
ExpectedTypeName = payloadElement.FullTypeName
}
};
if (payloadElement.IsMediaLinkEntry())
{
ODataStreamReferenceValue mediaResource = new ODataStreamReferenceValue();
mediaResource.ContentType = payloadElement.StreamContentType;
mediaResource.ETag = payloadElement.StreamETag;
mediaResource.ReadLink = new Uri(payloadElement.StreamSourceLink);
mediaResource.EditLink = new Uri(payloadElement.StreamEditLink);
entry.MediaResource = mediaResource;
}
// TODO: add support for custom extensions at some point
AddEntryMetadata(payloadElement, entry);
if (this.items.Count > 0)
{
var parent = this.items.Peek();
var navLink = parent as ODataNavigationLink;
if (navLink != null)
{
navLink.SetAnnotation(new ODataNavigationLinkExpandedItemObjectModelAnnotation() { ExpandedItem = entry });
}
else
{
var feed = parent as ODataFeed;
ExceptionUtilities.CheckObjectNotNull(feed, "Feed was expected");
ODataFeedEntriesObjectModelAnnotation annotation = feed.GetAnnotation<ODataFeedEntriesObjectModelAnnotation>();
if (annotation == null)
{
annotation = new ODataFeedEntriesObjectModelAnnotation();
feed.SetAnnotation(annotation);
}
annotation.Add(entry);
}
}
//Initialise stuff for the entry
var originalPosition = this.currentPropertyPosition;
this.currentPropertyPosition = 0;
try
{
this.items.Push(entry);
// visit the properties (incl. navigation properties and named stream properties)
base.Visit(payloadElement);
}
finally
{
entry = (ODataEntry) this.items.Pop();
}
//Return to original values
this.currentPropertyPosition = originalPosition;
//If we are at the top level push this to items to make it the result.
if (this.items.Count == 0)
{
this.items.Push(entry);
}
}
/// <summary>
/// Read a feed with an <see cref="ODataReader"/> positioned on the feed start.
/// </summary>
/// <param name="reader">The <see cref="ODataReader"/> to use for reading the feed.</param>
/// <returns>An <see cref="ODataFeed"/>, possibly with annotations.</returns>
private ODataFeed ReadFeed(ODataReader reader)
{
this.assert.AreEqual(ODataReaderState.FeedStart, reader.State, "Reader states don't match.");
ODataFeed feed = (ODataFeed)reader.Item;
ODataFeedPayloadOrderObjectModelAnnotation payloadOrderItems = this.storePayloadOrder ? new ODataFeedPayloadOrderObjectModelAnnotation() : null;
ODataFeedEntriesObjectModelAnnotation feedEntries = new ODataFeedEntriesObjectModelAnnotation();
AddFeedPayloadOrderItems(feed, payloadOrderItems);
if (payloadOrderItems != null)
{
payloadOrderItems.AddStartFeed();
}
while (reader.Read())
{
if (reader.State == ODataReaderState.EntryStart)
{
AddFeedPayloadOrderItems(feed, payloadOrderItems);
ODataEntry entry = this.ReadEntry(reader);
if (payloadOrderItems != null)
{
payloadOrderItems.AddEntry(entry);
}
feedEntries.Add(entry);
}
else if (reader.State == ODataReaderState.FeedEnd)
{
// we are done reading the feed
break;
}
else
{
this.assert.Fail("Unexpected reader state '" + reader.State + "' for reading a feed.");
}
}
this.assert.AreEqual(ODataReaderState.FeedEnd, reader.State, "Reader states don't match.");
ODataFeed feedAtEnd = (ODataFeed)reader.Item;
this.assert.AreSame(feed, feedAtEnd, "Expected the same feed instance.");
AddFeedPayloadOrderItems(feed, payloadOrderItems);
feed.SetAnnotation(feedEntries);
if (this.storePayloadOrder)
{
feed.SetAnnotation(payloadOrderItems);
}
return feed;
}
/// <summary>
/// Visits an entity instance: creates a new ODataResource instance, collects and sets all the properties,
/// calls ODataWriter.WriteStart(), then visits the navigation properties and calls ODataWriter.WriteEnd()
/// </summary>
/// <param name="payloadElement">The entity instance to write.</param>
public override void Visit(EntityInstance payloadElement)
{
// create an ODataResource and write it
string editLinkString = payloadElement.GetEditLink();
string selfLinkString = payloadElement.GetSelfLink();
string entryId = payloadElement.Id;
var entry = new ODataResource()
{
Id = string.IsNullOrEmpty(entryId) ? null : new Uri(entryId),
ETag = payloadElement.ETag,
EditLink = string.IsNullOrEmpty(editLinkString) ? null : new Uri(editLinkString),
ReadLink = string.IsNullOrEmpty(selfLinkString) ? null : new Uri(selfLinkString),
TypeName = payloadElement.FullTypeName,
Properties = new List <ODataProperty>(),
SerializationInfo = new ODataResourceSerializationInfo()
{
NavigationSourceEntityTypeName = payloadElement.FullTypeName,
NavigationSourceName = "MySet",
ExpectedTypeName = payloadElement.FullTypeName
}
};
if (payloadElement.IsMediaLinkEntry())
{
ODataStreamReferenceValue mediaResource = new ODataStreamReferenceValue();
mediaResource.ContentType = payloadElement.StreamContentType;
mediaResource.ETag = payloadElement.StreamETag;
mediaResource.ReadLink = new Uri(payloadElement.StreamSourceLink);
mediaResource.EditLink = new Uri(payloadElement.StreamEditLink);
entry.MediaResource = mediaResource;
}
if (this.items.Count > 0)
{
var parent = this.items.Peek();
var navLink = parent as ODataNestedResourceInfo;
if (navLink != null)
{
navLink.SetAnnotation(new ODataNavigationLinkExpandedItemObjectModelAnnotation()
{
ExpandedItem = entry
});
}
else
{
var feed = parent as ODataResourceSet;
ExceptionUtilities.CheckObjectNotNull(feed, "Feed was expected");
ODataFeedEntriesObjectModelAnnotation annotation = feed.GetAnnotation <ODataFeedEntriesObjectModelAnnotation>();
if (annotation == null)
{
annotation = new ODataFeedEntriesObjectModelAnnotation();
feed.SetAnnotation(annotation);
}
annotation.Add(entry);
}
}
//Initialise stuff for the entry
var originalPosition = this.currentPropertyPosition;
this.currentPropertyPosition = 0;
try
{
this.items.Push(entry);
// visit the properties (incl. navigation properties and named stream properties)
base.Visit(payloadElement);
}
finally
{
entry = (ODataResource)this.items.Pop();
}
//Return to original values
this.currentPropertyPosition = originalPosition;
//If we are at the top level push this to items to make it the result.
if (this.items.Count == 0)
{
this.items.Push(entry);
}
}