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 Relationship CreateResourceRelationship(Links apiRelationshipLinks, IResourceType resourceType, IRelationshipInfo relationship, IRelationshipContext relationshipContext)
{
Contract.Requires(resourceType != null);
Contract.Requires(relationship != null);
Contract.Requires(relationshipContext != null);
var apiRelationshipToCardinality = relationship.ToCardinality;
var apiRelationshipMeta = relationshipContext.Meta;
var apiRelationshipType = relationshipContext.GetRelationshipType();
switch (apiRelationshipType)
{
case RelationshipType.Relationship:
{
var apiRelationship = new Relationship
{
Links = apiRelationshipLinks,
Meta = apiRelationshipMeta
};
return(apiRelationship);
}
case RelationshipType.ToOneRelationship:
{
if (apiRelationshipToCardinality != RelationshipCardinality.ToOne)
{
var apiRel = relationshipContext.Rel;
var fromClrResourceTypeName = resourceType.ClrType.Name;
var toClrResourceTypeName = relationship.ToClrType.Name;
var detail = ServerErrorStrings
.DocumentBuildExceptionDetailBuildResourceRelationshipCardinalityMismatch
.FormatWith(apiRel, fromClrResourceTypeName, toClrResourceTypeName, RelationshipCardinality.ToOne, apiRelationshipToCardinality);
throw new DocumentBuildException(detail);
}
var apiToOneResourceLinkage = relationshipContext.GetToOneResourceLinkage();
var apiRelationship = new ToOneRelationship
{
Links = apiRelationshipLinks,
Data = apiToOneResourceLinkage,
Meta = apiRelationshipMeta
};
return(apiRelationship);
}
case RelationshipType.ToManyRelationship:
{
if (apiRelationshipToCardinality != RelationshipCardinality.ToMany)
{
var apiRel = relationshipContext.Rel;
var fromClrResourceTypeName = resourceType.ClrType.Name;
var toClrResourceTypeName = relationship.ToClrType.Name;
var detail = ServerErrorStrings
.DocumentBuildExceptionDetailBuildResourceRelationshipCardinalityMismatch
.FormatWith(apiRel, fromClrResourceTypeName, toClrResourceTypeName, RelationshipCardinality.ToMany, apiRelationshipToCardinality);
throw new DocumentBuildException(detail);
}
var apiToManyResourceLinkage = relationshipContext.GetToManyResourceLinkage()
.SafeToList();
var apiRelationship = new ToManyRelationship
{
Links = apiRelationshipLinks,
Data = apiToManyResourceLinkage,
Meta = apiRelationshipMeta
};
return(apiRelationship);
}
default:
{
var detail = InfrastructureErrorStrings.InternalErrorExceptionDetailUnknownEnumerationValue
.FormatWith(typeof(RelationshipType).Name, apiRelationshipType);
throw new InternalErrorException(detail);
}
}
}
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 bool HasLinks(this IRelationshipContext relationshipContext)
{
Contract.Requires(relationshipContext != null);
return(relationshipContext.LinkContexts != null && relationshipContext.LinkContexts.Any());
}
