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);
}
}
}
// PRIVATE METHODS //////////////////////////////////////////////////
#region Methods
private Relationship GetRelationship()
{
var links = default(Links);
var toOneResourceLinkage = default(ResourceIdentifier);
var toOneResourceLinkagePresent = default(bool);
var toManyResourceLinkage = default(List <ResourceIdentifier>);
var toManyResourceLinkagePresent = default(bool);
var meta = default(Meta);
var domRelationshipNodes = this.Nodes();
foreach (var domRelationshipNode in domRelationshipNodes)
{
var domRelationshipNodeType = domRelationshipNode.NodeType;
switch (domRelationshipNodeType)
{
case DomNodeType.Links:
{
var domLinks = (IDomLinks)domRelationshipNode;
links = domLinks.Links;
}
break;
case DomNodeType.Data:
{
toOneResourceLinkagePresent = true;
var domDataNode = (DomData)domRelationshipNode;
var domResourceIdentifierNode = domDataNode.Node;
if (domResourceIdentifierNode != null)
{
var apiResourceIdentifier = GetApiResourceIdentifier(domResourceIdentifierNode);
toOneResourceLinkage = apiResourceIdentifier;
}
}
break;
case DomNodeType.DataCollection:
{
toManyResourceLinkagePresent = true;
var domDataCollectionNode = (DomDataCollection)domRelationshipNode;
var domResourceIdentifierNodes = domDataCollectionNode.Nodes();
toManyResourceLinkage = domResourceIdentifierNodes.Select(GetApiResourceIdentifier)
.ToList();
}
break;
case DomNodeType.Meta:
{
var domMeta = (IDomMeta)domRelationshipNode;
meta = domMeta.Meta;
}
break;
default:
{
var detail = InfrastructureErrorStrings.DomExceptionDetailNodeHasUnexpectedChildNode
.FormatWith(this.NodeType, domRelationshipNodeType);
throw new DomException(detail);
}
}
}
if (toOneResourceLinkagePresent && toManyResourceLinkagePresent)
{
var detail = InfrastructureErrorStrings.DomExceptionDetailNodeHasIncompatibleChildNodes
.FormatWith(this.NodeType, DomNodeType.Data, DomNodeType.DataCollection);
throw new DomException(detail);
}
// Create the concrete relationship object and initialize the data property if needed.
Relationship relationship;
if (toOneResourceLinkagePresent)
{
relationship = new ToOneRelationship
{
Data = toOneResourceLinkage
};
}
else if (toManyResourceLinkagePresent)
{
relationship = new ToManyRelationship
{
Data = toManyResourceLinkage
};
}
else
{
relationship = new Relationship();
}
// Initialize remaining common relationship properties.
relationship.Links = links;
relationship.Meta = meta;
return(relationship);
}