private static Link CreateResourceRelationshipLink(IHypermediaContext hypermediaContext,
IResourcePathContext resourcePathContext,
IResourceType resourceType,
object clrResource,
bool addRelationshipsPathSegment,
IRelationshipInfo relationship,
Meta apiRelationshipLinkMeta)
{
Contract.Requires(hypermediaContext != null);
Contract.Requires(resourcePathContext != null);
Contract.Requires(resourceType != null);
Contract.Requires(clrResource != null);
Contract.Requires(relationship != null);
var clrResourceType = resourceType.ClrType;
var urlBuilderConfiguration = hypermediaContext.GetUrlBuilderConfiguration(clrResourceType);
var apiId = resourceType.GetApiId(clrResource);
var apiResourcePath = resourcePathContext.GetResourceSelfPath(apiId);
var apiRelationshipRelPathSegment = relationship.ApiRelPathSegment;
var apiRelationshipLinkHRef = UrlBuilder.Create(urlBuilderConfiguration)
.Path(apiResourcePath)
.Path(Keywords.Relationships, addRelationshipsPathSegment)
.Path(apiRelationshipRelPathSegment)
.Build();
var apiRelationshipLink = new Link
{
HRef = apiRelationshipLinkHRef,
Meta = apiRelationshipLinkMeta
};
return(apiRelationshipLink);
}
private static void ResolveResourceLink(IDomLink domLink,
IHypermediaContext hypermediaContext,
IHypermediaAssembler hypermediaAssembler,
IResourcePathContext resourcePathContext,
Type clrResourceType,
object clrResource,
DomReadWriteLinks domReadWriteLinks)
{
if (domLink.IsReadOnly)
{
return;
}
// Resolve read-write resource link
var domReadWriteLink = (DomReadWriteLink)domLink;
var apiLinkRel = domReadWriteLink.Rel;
var apiLinkMeta = default(Meta);
var domLinkMeta = (IDomMeta)domReadWriteLink.GetNode(DomNodeType.Meta);
if (domLinkMeta != null)
{
apiLinkMeta = domLinkMeta.Meta;
}
// Create link.
var linkContext = new LinkContext(apiLinkRel, apiLinkMeta);
var apiResourceLink = hypermediaAssembler.CreateResourceLink(hypermediaContext, resourcePathContext, clrResourceType, clrResource, linkContext);
// Replace the old DOM read-write link node with a new DOM read-only link created by the framework.
var domReadOnlyLink = DomReadOnlyLink.Create(apiLinkRel, apiResourceLink);
domReadWriteLinks.ReplaceNode(domReadWriteLink, domReadOnlyLink);
}
public Link CreateResourceLink(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 apiResourceLink = CreateStandardResourceLink(hypermediaContext, resourcePathContext, clrResourceType, clrResource, linkContext);
if (apiResourceLink != null)
{
return(apiResourceLink);
}
var urlBuilderConfiguration = hypermediaContext.GetUrlBuilderConfiguration(clrResourceType);
var throwExceptionOnLinkBuildError = urlBuilderConfiguration.ThrowExceptionOnLinkBuildError;
if (throwExceptionOnLinkBuildError == false)
{
return(null);
}
var apiRel = linkContext.Rel;
var clrResourceTypeName = clrResourceType.Name;
var detail = ServerErrorStrings.DocumentBuildExceptionDetailBuildNonStandardResourceLink
.FormatWith(apiRel, clrResourceTypeName);
throw new DocumentBuildException(detail);
}
public static IEnumerable <string> GetResourceSelfPath(this IResourcePathContext resourcePathContext, string apiId)
{
Contract.Requires(resourcePathContext != null);
Contract.Requires(String.IsNullOrWhiteSpace(apiId) == false);
var resourceSelfBasePath = resourcePathContext.ResourceSelfBasePath;
var resourceSelfPathMode = resourcePathContext.ResourceSelfPathMode;
var resourceSelfPath = GetResourcePath(resourceSelfBasePath, resourceSelfPathMode, apiId);
return(resourceSelfPath);
}
private void ResolveResourceRelationships(DomReadWriteResource domReadWriteResource,
IHypermediaContext hypermediaContext,
IHypermediaAssembler hypermediaAssembler,
IResourcePathContext resourcePathContext,
Type clrResourceType,
object clrResource)
{
var domRelationships = (IDomRelationships)domReadWriteResource.GetNode(DomNodeType.Relationships);
if (domRelationships == null || domRelationships.IsReadOnly)
{
return;
}
var domReadWriteRelationships = (DomReadWriteRelationships)domRelationships;
foreach (var domRelationship in domReadWriteRelationships.Nodes().Cast <IDomRelationship>())
{
this.ResolveResourceRelationship(domRelationship, hypermediaContext, hypermediaAssembler, resourcePathContext, clrResourceType, clrResource, domReadWriteRelationships);
}
}
private static void ResolveResourceLinks(DomReadWriteResource domReadWriteResource,
IHypermediaContext hypermediaContext,
IHypermediaAssembler hypermediaAssembler,
IResourcePathContext resourcePathContext,
Type clrResourceType,
object clrResource)
{
var domLinks = (IDomLinks)domReadWriteResource.GetNode(DomNodeType.Links);
if (domLinks == null || domLinks.IsReadOnly)
{
return;
}
var domReadWriteLinks = (DomReadWriteLinks)domLinks;
foreach (var domLink in domReadWriteLinks.Nodes().Cast <IDomLink>())
{
ResolveResourceLink(domLink, hypermediaContext, hypermediaAssembler, resourcePathContext, clrResourceType, clrResource, domReadWriteLinks);
}
}
private static Links CreateResourceRelationshipLinks(IHypermediaContext hypermediaContext,
IResourcePathContext resourcePathContext,
IResourceType resourceType,
object clrResource,
IRelationshipInfo relationship,
IRelationshipContext relationshipContext)
{
Contract.Requires(hypermediaContext != null);
Contract.Requires(resourcePathContext != null);
Contract.Requires(resourceType != null);
Contract.Requires(clrResource != null);
Contract.Requires(relationship != null);
Contract.Requires(relationshipContext != null);
var apiRelationshipHasLinks = relationshipContext.HasLinks();
if (!apiRelationshipHasLinks)
{
return(null);
}
var links = relationshipContext.LinkContexts;
var apiRelationshipRelToLinkDictionary = links
.Select(x =>
{
var rel = x.Rel;
var meta = x.Meta;
var isSelfLink = String.Compare(Keywords.Self, rel, StringComparison.Ordinal) == 0;
var link = CreateResourceRelationshipLink(hypermediaContext, resourcePathContext, resourceType, clrResource, isSelfLink, relationship, meta);
return(new Tuple <string, Link>(rel, link));
})
.ToDictionary(x => x.Item1, x => x.Item2);
var apiRelationshipLinks = new Links(apiRelationshipRelToLinkDictionary);
return(apiRelationshipLinks);
}
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);
}
private void ResolveResourceRelationship(IDomRelationship domRelationship,
IHypermediaContext hypermediaContext,
IHypermediaAssembler hypermediaAssembler,
IResourcePathContext resourcePathContext,
Type clrResourceType,
object clrResource,
DomReadWriteRelationships domReadWriteRelationships)
{
if (domRelationship.IsReadOnly)
{
return;
}
// Resolve read-write relationship
var domReadWriteRelationship = (DomReadWriteRelationship)domRelationship;
// .. Rel
var apiRelationshipRel = domReadWriteRelationship.Rel;
// .. Links
var linkContexts = new List <ILinkContext>();
var domRelationshipLinks = (IDomLinks)domReadWriteRelationship.GetNode(DomNodeType.Links);
if (domRelationshipLinks != null)
{
if (domRelationshipLinks.IsReadOnly)
{
// A read-write relationship contains unexpected read-only relationship links.
var detail = ServerErrorStrings.DomExceptionDetailReadWriteNodeHasUnexpectedReadOnlyChildNode
.FormatWith(DomNodeType.Relationship, DomNodeType.Links);
throw new DomException(detail);
}
var domReadWriteRelationshipLinks = (DomReadWriteLinks)domRelationshipLinks;
foreach (var domLink in domReadWriteRelationshipLinks.Nodes().Cast <IDomLink>())
{
if (domLink.IsReadOnly)
{
// A read-write relationship contains unexpected read-only relationship link.
var detail = ServerErrorStrings.DomExceptionDetailReadWriteNodeHasUnexpectedReadOnlyChildNode
.FormatWith(DomNodeType.Relationship, DomNodeType.Link);
throw new DomException(detail);
}
// Resolve read-write relationship link
var domReadWriteLink = (DomReadWriteLink)domLink;
var apiLinkRel = domReadWriteLink.Rel;
var apiLinkMeta = default(Meta);
var domMeta = (IDomMeta)domReadWriteLink.GetNode(DomNodeType.Meta);
if (domMeta != null)
{
apiLinkMeta = domMeta.Meta;
}
var linkContext = new LinkContext(apiLinkRel, apiLinkMeta);
linkContexts.Add(linkContext);
}
}
// .. Data
var resourceType = this.ServiceModel.GetResourceType(clrResourceType);
var fromApiResourceIdentifier = resourceType.GetApiResourceIdentifier(clrResource);
var resourceLinkageKey = new ResourceLinkageKey(fromApiResourceIdentifier, apiRelationshipRel);
ResourceLinkage resourceLinkage;
var hasResourceLinkage = this.DocumentBuilderContext.TryGetResourceLinkage(resourceLinkageKey, out resourceLinkage);
// .. Meta
var apiRelationshipMeta = default(Meta);
var domRelationshipMeta = (IDomMeta)domReadWriteRelationship.GetNode(DomNodeType.Meta);
if (domRelationshipMeta != null)
{
apiRelationshipMeta = domRelationshipMeta.Meta;
}
// Create the correct relationship context based on resource linkage (if any).
RelationshipContext relationshipContext;
if (hasResourceLinkage)
{
var resourceLinkageType = resourceLinkage.Type;
switch (resourceLinkageType)
{
case ResourceLinkageType.ToOneResourceLinkage:
{
var toOneResourceLinkage = resourceLinkage.ToOneResourceLinkage;
relationshipContext = new ToOneRelationshipContext(apiRelationshipRel, linkContexts, toOneResourceLinkage, apiRelationshipMeta);
}
break;
case ResourceLinkageType.ToManyResourceLinkage:
{
var toManyResourceLinkage = resourceLinkage.ToManyResourceLinkage;
relationshipContext = new ToManyRelationshipContext(apiRelationshipRel, linkContexts, toManyResourceLinkage, apiRelationshipMeta);
}
break;
default:
{
var detail = InfrastructureErrorStrings.InternalErrorExceptionDetailUnknownEnumerationValue
.FormatWith(typeof(ResourceLinkageType).Name, resourceLinkageType);
throw new InternalErrorException(detail);
}
}
}
else
{
relationshipContext = new RelationshipContext(apiRelationshipRel, linkContexts, apiRelationshipMeta);
}
// Create relationship.
var apiResourceRelationship = hypermediaAssembler.CreateResourceRelationship(hypermediaContext, resourcePathContext, clrResourceType, clrResource, relationshipContext);
// Replace the old DOM read-write relationship node with a new DOM read-only relationship created by the framework.
var domReadOnlyRelationship = DomReadOnlyRelationship.Create(apiRelationshipRel, apiResourceRelationship);
domReadWriteRelationships.ReplaceNode(domReadWriteRelationship, domReadOnlyRelationship);
}
public static void SetResourcePathContext(this DomReadWriteResource domReadWriteResource, IResourcePathContext resourcePathContext)
{
Contract.Requires(domReadWriteResource != null);
Contract.Requires(resourcePathContext != null);
domReadWriteResource.SetSingleAttribute(ResourcePathContextNodeAttributeName, resourcePathContext);
}
