private static Link CreateStandardResourceLink(IHypermediaContext hypermediaContext, IResourcePathContext resourcePathContext, Type clrResourceType, object clrResource, ILinkContext linkContext)
{
Contract.Requires(hypermediaContext != null);
Contract.Requires(resourcePathContext != null);
Contract.Requires(clrResourceType != null);
Contract.Requires(clrResource != null);
Contract.Requires(linkContext != null);
var apiRel = linkContext.Rel;
var apiLinkMeta = linkContext.Meta;
switch (apiRel)
{
case Keywords.Canonical:
case Keywords.Self:
{
var urlBuilderConfiguration = hypermediaContext.GetUrlBuilderConfiguration(clrResourceType);
var serviceModel = hypermediaContext.GetServiceModel();
var resourceType = serviceModel.GetResourceType(clrResourceType);
var isSelfLink = String.Compare(Keywords.Self, apiRel, StringComparison.Ordinal) == 0;
var apiId = resourceType.GetApiId(clrResource);
var apiResourcePath = isSelfLink
? resourcePathContext.GetResourceSelfPath(apiId)
: resourcePathContext.GetResourceCanonicalPath(apiId);
var apiHRef = UrlBuilder.Create(urlBuilderConfiguration)
.Path(apiResourcePath)
.Build();
var apiResourceLink = new Link
{
HRef = apiHRef,
Meta = apiLinkMeta
};
return(apiResourceLink);
}
}
return(null);
}
public Relationship CreateResourceRelationship(IHypermediaContext hypermediaContext, IResourcePathContext resourcePathContext, Type clrResourceType, object clrResource, IRelationshipContext relationshipContext)
{
Contract.Requires(hypermediaContext != null);
Contract.Requires(resourcePathContext != null);
Contract.Requires(clrResourceType != null);
Contract.Requires(clrResource != null);
Contract.Requires(relationshipContext != null);
var apiRel = relationshipContext.Rel;
var serviceModel = hypermediaContext.GetServiceModel();
var resourceType = serviceModel.GetResourceType(clrResourceType);
var relationship = resourceType.GetRelationshipInfo(apiRel);
// Create the Links object of the relationship.
var apiRelationshipLinks = CreateResourceRelationshipLinks(hypermediaContext, resourcePathContext, resourceType, clrResource, relationship, relationshipContext);
// Create the relationship:
var apiRelationship = CreateResourceRelationship(apiRelationshipLinks, resourceType, relationship, relationshipContext);
return(apiRelationship);
}
// PUBLIC METHODS ///////////////////////////////////////////////////
#region Extensions Methods
public static IEnumerable <IHypermediaPath> ParseDocumentSelfPath(this Uri url, IHypermediaContext hypermediaContext)
{
Contract.Requires(url != null);
Contract.Requires(hypermediaContext != null);
// Create a URL path segment enumerator to enumerate over the URL path segments.
var urlPathSegmentsFromUri = new List <string>(GetUrlPathSegments(url));
// Remove any root path segments
var uriBuilderConfiguration = hypermediaContext.GetUrlBuilderConfiguration(url);
if (uriBuilderConfiguration.RootPathSegments != null)
{
var rootPathSegments = uriBuilderConfiguration.RootPathSegments.SafeToReadOnlyList();
var rootPathSegmentsCount = rootPathSegments.Count;
urlPathSegmentsFromUri = urlPathSegmentsFromUri.SkipWhile((pathSegment, index) =>
{
if (index >= rootPathSegmentsCount)
{
return(false);
}
var rootPathSegment = rootPathSegments[index];
var rootPathSegmentEqualToPathSegment = String.CompareOrdinal(rootPathSegment, pathSegment) == 0;
return(rootPathSegmentEqualToPathSegment);
})
.ToList();
}
var urlPathSegments = new List <string>();
var serviceModel = hypermediaContext.GetServiceModel();
var homeDocumentExists = serviceModel.TryGetHomeResourceType(out var homeResourceType);
if (homeDocumentExists)
{
var homeResourceTypeApiCollectionPathSegment = homeResourceType.HypermediaInfo.ApiCollectionPathSegment;
if (String.IsNullOrEmpty(homeResourceTypeApiCollectionPathSegment))
{
urlPathSegments.Add(String.Empty);
}
}
urlPathSegments.AddRange(urlPathSegmentsFromUri);
var urlPathSegmentsEnumerator = (IEnumerator <string>)urlPathSegments.GetEnumerator();
// Parse the raw URL path for document self link path objects by
// looking for the following:
// 1. resource collection hypermedia path objects
// 2. resource hypermedia path objects
// 3. non-resource hypermedia path objects
// 4. to-many resource collection hypermedia path objects
// 5. to-many resource hypermedia path objects
var documentSelfPath = new List <IHypermediaPath>();
var continueIterating = InitialIteration(serviceModel, urlPathSegmentsEnumerator, documentSelfPath);
if (continueIterating && homeDocumentExists)
{
continueIterating = InitialIteration(serviceModel, urlPathSegmentsEnumerator, documentSelfPath);
}
while (continueIterating)
{
continueIterating = NextIteration(serviceModel, urlPathSegmentsEnumerator, documentSelfPath);
}
return(documentSelfPath);
}