/// <summary>
/// Writes a navigation link.
/// </summary>
/// <param name="entityDescriptor">The entity</param>
/// <param name="relatedLinks">The links related to the entity</param>
/// <param name="odataWriter">The ODataWriter used to write the navigation link.</param>
internal void WriteNavigationLink(EntityDescriptor entityDescriptor, IEnumerable <LinkDescriptor> relatedLinks, ODataWriterWrapper odataWriter)
{
// TODO:: create instance of odatawriter.
// TODO:: send clientType once, so that we dont need entity descriptor
Debug.Assert(EntityStates.Added == entityDescriptor.State, "entity not added state");
Dictionary <string, List <LinkDescriptor> > groupRelatedLinks = new Dictionary <string, List <LinkDescriptor> >(EqualityComparer <string> .Default);
foreach (LinkDescriptor end in relatedLinks)
{
List <LinkDescriptor> linkDescriptorsList = null;
if (!groupRelatedLinks.TryGetValue(end.SourceProperty, out linkDescriptorsList))
{
linkDescriptorsList = new List <LinkDescriptor>();
groupRelatedLinks.Add(end.SourceProperty, linkDescriptorsList);
}
linkDescriptorsList.Add(end);
}
ClientTypeAnnotation clientType = null;
foreach (var grlinks in groupRelatedLinks)
{
if (null == clientType)
{
ClientEdmModel model = this.requestInfo.Model;
clientType = model.GetClientTypeAnnotation(model.GetOrCreateEdmType(entityDescriptor.Entity.GetType()));
}
bool isCollection = clientType.GetProperty(grlinks.Key, false).IsEntityCollection;
bool started = false;
foreach (LinkDescriptor end in grlinks.Value)
{
Debug.Assert(!end.ContentGeneratedForSave, "already saved link");
end.ContentGeneratedForSave = true;
Debug.Assert(null != end.Target, "null is DELETE");
ODataNavigationLink navigationLink = new ODataNavigationLink();
navigationLink.Url = this.requestInfo.EntityTracker.GetEntityDescriptor(end.Target).GetLatestEditLink();
Debug.Assert(Uri.IsWellFormedUriString(UriUtil.UriToString(navigationLink.Url), UriKind.Absolute), "Uri.IsWellFormedUriString(targetEditLink, UriKind.Absolute)");
navigationLink.IsCollection = isCollection;
navigationLink.Name = grlinks.Key;
if (!started)
{
odataWriter.WriteNavigationLinksStart(navigationLink);
started = true;
}
odataWriter.WriteNavigationLinkStart(navigationLink, end.Source, end.Target);
odataWriter.WriteEntityReferenceLink(new ODataEntityReferenceLink()
{
Url = navigationLink.Url
}, end.Source, end.Target);
odataWriter.WriteNavigationLinkEnd(navigationLink, end.Source, end.Target);
}
odataWriter.WriteNavigationLinksEnd();
}
}
/// <summary>
/// Convert an instance of primitive type to string
/// </summary>
/// <param name="instance">The instance</param>
/// <returns>The string representation of the instance</returns>
internal override string ToString(object instance)
{
return(UriUtil.UriToString((Uri)instance));
}
