/// <summary>
/// Initializes a new expanded ODataNestedResourceInfo instance and visits the payload.
/// </summary>
/// <param name="payloadElement">The expanded link to visit.</param>
public override void Visit(ExpandedLink payloadElement)
{
Debug.Assert(this.items.Peek() is ODataNestedResourceInfo);
ODataNestedResourceInfo navigationLink = (ODataNestedResourceInfo)this.items.Pop();
navigationLink.IsCollection = !payloadElement.IsSingleEntity;
// TODO, ckerer: where do I get the info whether this links is a singleton or collection?
if (payloadElement.UriString != null)
{
navigationLink.Url = new Uri(payloadElement.UriString);
}
var entry = (ODataResource)this.items.Peek();
var annotation = entry.GetAnnotation <ODataEntryNavigationLinksObjectModelAnnotation>();
if (annotation == null)
{
annotation = new ODataEntryNavigationLinksObjectModelAnnotation();
entry.SetAnnotation <ODataEntryNavigationLinksObjectModelAnnotation>(annotation);
}
annotation.Add(navigationLink, this.currentPropertyPosition);
this.items.Push(navigationLink);
base.Visit(payloadElement);
this.currentPropertyPosition++;
}
/// <summary>
/// Initializes an ODataNestedResourceInfo instance for the deferred link payload.
/// </summary>
/// <param name="payloadElement">The deferred link to process.</param>
public override void Visit(DeferredLink payloadElement)
{
if (this.items.Peek() is ODataNestedResourceInfo)
{
ODataNestedResourceInfo navigationLink = (ODataNestedResourceInfo)this.items.Pop();
navigationLink.Url = new Uri(payloadElement.UriString);
var contentType = payloadElement.Annotations.Where(a => a is ContentTypeAnnotation).SingleOrDefault();
if (contentType != null)
{
navigationLink.IsCollection = contentType.StringRepresentation.Contains("feed");
}
var entry = (ODataResource)this.items.Peek();
var annotation = entry.GetAnnotation <ODataEntryNavigationLinksObjectModelAnnotation>();
if (annotation == null)
{
annotation = new ODataEntryNavigationLinksObjectModelAnnotation();
entry.SetAnnotation <ODataEntryNavigationLinksObjectModelAnnotation>(annotation);
}
annotation.Add(navigationLink, this.currentPropertyPosition);
this.items.Push(navigationLink);
if (!this.response)
{
navigationLink.SetAnnotation(new ODataNavigationLinkExpandedItemObjectModelAnnotation()
{
ExpandedItem = new ODataEntityReferenceLink()
{
Url = navigationLink.Url
}
});
}
base.Visit(payloadElement);
this.currentPropertyPosition++;
}
else
{
this.items.Push(new ODataEntityReferenceLink()
{
Url = new Uri(payloadElement.UriString)
});
}
}
/// <summary>
/// Process all properties (regular and navigation properties) while preserving their order in
/// the payload.
/// </summary>
/// <param name="entry">The <see cref="ODataResource"/> to process the properties for.</param>
public static void ProcessPropertiesPreservingPayloadOrder(this ODataResource entry, Action <ODataProperty> propertyAction, Action <ODataNestedResourceInfo> navigationLinkAction)
{
ExceptionUtilities.CheckArgumentNotNull(entry, "entry");
ExceptionUtilities.CheckArgumentNotNull(propertyAction, "propertyAction");
ExceptionUtilities.CheckArgumentNotNull(navigationLinkAction, "navigationLinkAction");
ODataEntryNavigationLinksObjectModelAnnotation navigationLinks = entry.NavigationLinks();
if (navigationLinks == null)
{
navigationLinks = new ODataEntryNavigationLinksObjectModelAnnotation();
}
int navigationLinksProcessed = 0;
// NOTE we iterate over all the properties here just to get the count; since this is test code only we don't care
int navigationLinkCount = navigationLinks == null ? 0 : navigationLinks.Count;
int totalPropertyCount = entry.Properties.Count() + navigationLinkCount;
// NOTE: we are preserving the same order of items as in the payload, i.e., if regular
// properties and navigation properties are interleaved we preserve their relative order.
using (IEnumerator <ODataProperty> propertyEnumerator = entry.Properties.GetEnumerator())
{
ODataNestedResourceInfo navigationLink;
for (int i = 0; i < totalPropertyCount; ++i)
{
if (navigationLinks != null && navigationLinks.TryGetNavigationLinkAt(i, out navigationLink))
{
navigationLinkAction(navigationLink);
navigationLinksProcessed++;
}
else
{
bool hasMore = propertyEnumerator.MoveNext();
Debug.Assert(hasMore, "More properties were expected.");
propertyAction(propertyEnumerator.Current);
}
}
}
Debug.Assert(navigationLinksProcessed == navigationLinkCount, "All navigation links should have been processed.");
}
/// <summary>
/// Process all properties (regular and navigation properties) while preserving their order in
/// the payload.
/// </summary>
/// <param name="entry">The <see cref="ODataEntry"/> to process the properties for.</param>
public static void ProcessPropertiesPreservingPayloadOrder(this ODataEntry entry, Action<ODataProperty> propertyAction, Action<ODataNavigationLink> navigationLinkAction)
{
ExceptionUtilities.CheckArgumentNotNull(entry, "entry");
ExceptionUtilities.CheckArgumentNotNull(propertyAction, "propertyAction");
ExceptionUtilities.CheckArgumentNotNull(navigationLinkAction, "navigationLinkAction");
ODataEntryNavigationLinksObjectModelAnnotation navigationLinks = entry.NavigationLinks();
if (navigationLinks == null)
{
navigationLinks = new ODataEntryNavigationLinksObjectModelAnnotation();
}
int navigationLinksProcessed = 0;
// NOTE we iterate over all the properties here just to get the count; since this is test code only we don't care
int navigationLinkCount = navigationLinks == null ? 0 : navigationLinks.Count;
int totalPropertyCount = entry.Properties.Count() + navigationLinkCount;
// NOTE: we are preserving the same order of items as in the payload, i.e., if regular
// properties and navigation properties are interleaved we preserve their relative order.
using (IEnumerator<ODataProperty> propertyEnumerator = entry.Properties.GetEnumerator())
{
ODataNavigationLink navigationLink;
for (int i = 0; i < totalPropertyCount; ++i)
{
if (navigationLinks != null && navigationLinks.TryGetNavigationLinkAt(i, out navigationLink))
{
navigationLinkAction(navigationLink);
navigationLinksProcessed++;
}
else
{
bool hasMore = propertyEnumerator.MoveNext();
Debug.Assert(hasMore, "More properties were expected.");
propertyAction(propertyEnumerator.Current);
}
}
}
Debug.Assert(navigationLinksProcessed == navigationLinkCount, "All navigation links should have been processed.");
}
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>
/// Read an entry with an <see cref="ODataReader"/> positioned on the entry start.
/// </summary>
/// <param name="reader">The <see cref="ODataReader"/> to use for reading the entry.</param>
/// <returns>An <see cref="ODataEntry"/>, possibly with annotations.</returns>
private ODataEntry ReadEntry(ODataReader reader)
{
this.assert.AreEqual(ODataReaderState.EntryStart, reader.State, "Reader states don't match.");
ODataEntry entry = (ODataEntry)reader.Item;
ODataEntryPayloadOrderObjectModelAnnotation payloadOrderItems = this.storePayloadOrder ? new ODataEntryPayloadOrderObjectModelAnnotation() : null;
ODataEntryNavigationLinksObjectModelAnnotation navigationLinks = new ODataEntryNavigationLinksObjectModelAnnotation();
AddEntryPayloadOrderItems(entry, payloadOrderItems);
if (payloadOrderItems != null)
{
payloadOrderItems.AddStartEntry();
}
while (reader.Read())
{
if (reader.State == ODataReaderState.NavigationLinkStart)
{
int positionInProperties = entry.Properties.Count();
AddEntryPayloadOrderItems(entry, payloadOrderItems);
ODataNavigationLink navigationLinkAtStart = (ODataNavigationLink)reader.Item;
if (payloadOrderItems != null)
{
payloadOrderItems.AddODataNavigationLink(navigationLinkAtStart);
}
ODataNavigationLink navigationLink = this.ReadNavigationLink(reader);
this.assert.AreSame(navigationLinkAtStart, navigationLink, "Expected the same navigation link instance.");
navigationLinks.Add(navigationLink, positionInProperties + navigationLinks.Count);
}
else if (reader.State == ODataReaderState.EntryEnd)
{
// we are done reading this entry
break;
}
else
{
this.assert.Fail("Unexpected reader state '" + reader.State + "' for reading an entry.");
}
}
this.assert.AreEqual(ODataReaderState.EntryEnd, reader.State, "Reader states don't match.");
ODataEntry entryAtEnd = (ODataEntry)reader.Item;
this.assert.AreSame(entry, entryAtEnd, "Expected the same entry instance.");
AddEntryPayloadOrderItems(entry, payloadOrderItems);
entry.SetAnnotation(navigationLinks);
if (this.storePayloadOrder)
{
entry.SetAnnotation(payloadOrderItems);
}
return entry;
}
/// <summary>
/// Initializes a new expanded ODataNavigationLink instance and visits the payload.
/// </summary>
/// <param name="payloadElement">The expanded link to visit.</param>
public override void Visit(ExpandedLink payloadElement)
{
Debug.Assert(this.items.Peek() is ODataNavigationLink);
ODataNavigationLink navigationLink = (ODataNavigationLink) this.items.Pop();
navigationLink.IsCollection = !payloadElement.IsSingleEntity;
// TODO, ckerer: where do I get the info whether this links is a singleton or collection?
if (payloadElement.UriString != null)
{
navigationLink.Url = new Uri(payloadElement.UriString);
}
var entry = (ODataEntry) this.items.Peek();
var annotation = entry.GetAnnotation<ODataEntryNavigationLinksObjectModelAnnotation>();
if (annotation == null)
{
annotation = new ODataEntryNavigationLinksObjectModelAnnotation();
entry.SetAnnotation<ODataEntryNavigationLinksObjectModelAnnotation>(annotation);
}
annotation.Add(navigationLink, this.currentPropertyPosition);
this.items.Push(navigationLink);
base.Visit(payloadElement);
this.currentPropertyPosition++;
}
/// <summary>
/// Initializes an ODataNavigationLink instance for the deferred link payload.
/// </summary>
/// <param name="payloadElement">The deferred link to process.</param>
public override void Visit(DeferredLink payloadElement)
{
if (this.items.Peek() is ODataNavigationLink)
{
ODataNavigationLink navigationLink = (ODataNavigationLink)this.items.Pop();
navigationLink.Url = new Uri(payloadElement.UriString);
AddLinkMetadata(payloadElement, navigationLink);
var contentType = payloadElement.Annotations.Where(a => a is ContentTypeAnnotation).SingleOrDefault();
if (contentType != null)
{
navigationLink.IsCollection = contentType.StringRepresentation.Contains("feed");
}
var entry = (ODataEntry)this.items.Peek();
var annotation = entry.GetAnnotation<ODataEntryNavigationLinksObjectModelAnnotation>();
if (annotation == null)
{
annotation = new ODataEntryNavigationLinksObjectModelAnnotation();
entry.SetAnnotation<ODataEntryNavigationLinksObjectModelAnnotation>(annotation);
}
annotation.Add(navigationLink, this.currentPropertyPosition);
this.items.Push(navigationLink);
if (!this.response)
{
navigationLink.SetAnnotation(new ODataNavigationLinkExpandedItemObjectModelAnnotation()
{
ExpandedItem = new ODataEntityReferenceLink() { Url = navigationLink.Url }
});
}
base.Visit(payloadElement);
this.currentPropertyPosition++;
}
else
{
this.items.Push(new ODataEntityReferenceLink() { Url = new Uri(payloadElement.UriString) });
}
}