private ResourceObject TryGetBuiltResourceObjectFor(IIdentifiable resource)
{
Type resourceType = resource.GetType();
ResourceContext resourceContext = ResourceContextProvider.GetResourceContext(resourceType);
return(_included.SingleOrDefault(resourceObject => resourceObject.Type == resourceContext.PublicName && resourceObject.Id == resource.StringId));
}
/// <inheritdoc />
public IList <ResourceObject> Build()
{
if (_included.Any())
{
// cleans relationship dictionaries and adds links of resources.
foreach (var resourceObject in _included)
{
if (resourceObject.Relationships != null)
{
foreach (var relationshipName in resourceObject.Relationships.Keys.ToArray())
{
var resourceContext = ResourceContextProvider.GetResourceContext(resourceObject.Type);
var relationship = resourceContext.Relationships.Single(rel => rel.PublicName == relationshipName);
if (!IsRelationshipInSparseFieldSet(relationship))
{
resourceObject.Relationships.Remove(relationshipName);
}
}
// removes relationship entries (<see cref="RelationshipEntry"/>s) if they're completely empty.
var pruned = resourceObject.Relationships.Where(p => p.Value.IsPopulated || p.Value.Links != null).ToDictionary(p => p.Key, p => p.Value);
if (!pruned.Any())
{
pruned = null;
}
resourceObject.Relationships = pruned;
}
resourceObject.Links = _linkBuilder.GetResourceLinks(resourceObject.Type, resourceObject.Id);
}
return(_included.ToArray());
}
return(null);
}
/// <summary>
/// Sets a HasOne relationship on a parsed resource. If present, also
/// populates the foreign key.
/// </summary>
private void SetHasOneRelationship(IIdentifiable resource,
PropertyInfo[] resourceProperties,
HasOneAttribute attr,
RelationshipEntry relationshipData)
{
var rio = (ResourceIdentifierObject)relationshipData.Data;
var relatedId = rio?.Id;
var relationshipType = relationshipData.SingleData == null
? attr.RightType
: ResourceContextProvider.GetResourceContext(relationshipData.SingleData.Type).ResourceType;
// this does not make sense in the following case: if we're setting the dependent of a one-to-one relationship, IdentifiablePropertyName should be null.
var foreignKeyProperty = resourceProperties.FirstOrDefault(p => p.Name == attr.IdentifiablePropertyName);
if (foreignKeyProperty != null)
{
// there is a FK from the current resource pointing to the related object,
// i.e. we're populating the relationship from the dependent side.
SetForeignKey(resource, foreignKeyProperty, attr, relatedId, relationshipType);
}
SetNavigation(resource, attr, relatedId, relationshipType);
// depending on if this base parser is used client-side or server-side,
// different additional processing per field needs to be executed.
AfterProcessField(resource, attr, relationshipData);
}
private bool IsRelationshipInSparseFieldSet(RelationshipAttribute relationship)
{
ResourceContext resourceContext = ResourceContextProvider.GetResourceContext(relationship.LeftType);
IReadOnlyCollection <ResourceFieldAttribute> fieldSet = _sparseFieldSetCache.GetSparseFieldSetForSerializer(resourceContext);
return(fieldSet.Contains(relationship));
}
private bool IsRelationshipInSparseFieldSet(RelationshipAttribute relationship)
{
var resourceContext = ResourceContextProvider.GetResourceContext(relationship.LeftType);
var fieldSet = _sparseFieldSetCache.GetSparseFieldSetForSerializer(resourceContext);
return(fieldSet.Contains(relationship));
}
protected ResourceContext GetExistingResourceContext(string publicName)
{
var resourceContext = ResourceContextProvider.GetResourceContext(publicName);
if (resourceContext == null)
{
throw new JsonApiSerializationException("Request body includes unknown resource type.",
$"Resource type '{publicName}' does not exist.", atomicOperationIndex: AtomicOperationIndex);
}
return(resourceContext);
}
private OperationContainer ParseForRelationshipOperation(AtomicOperationObject operation, OperationKind kind,
bool requireToMany)
{
AssertElementHasType(operation.Ref, "ref");
AssertElementHasIdOrLid(operation.Ref, "ref", true);
var primaryResourceContext = GetExistingResourceContext(operation.Ref.Type);
AssertCompatibleId(operation.Ref, primaryResourceContext.IdentityType);
var primaryResource = ResourceFactory.CreateInstance(primaryResourceContext.ResourceType);
primaryResource.StringId = operation.Ref.Id;
primaryResource.LocalId = operation.Ref.Lid;
var relationship = GetExistingRelationship(operation.Ref, primaryResourceContext);
if (requireToMany && relationship is HasOneAttribute)
{
throw new JsonApiSerializationException(
$"Only to-many relationships can be targeted in '{operation.Code.ToString().Camelize()}' operations.",
$"Relationship '{operation.Ref.Relationship}' must be a to-many relationship.",
atomicOperationIndex: AtomicOperationIndex);
}
var secondaryResourceContext = ResourceContextProvider.GetResourceContext(relationship.RightType);
var request = new JsonApiRequest
{
Kind = EndpointKind.AtomicOperations,
BasePath = _request.BasePath,
PrimaryId = primaryResource.StringId,
PrimaryResource = primaryResourceContext,
SecondaryResource = secondaryResourceContext,
Relationship = relationship,
IsCollection = relationship is HasManyAttribute,
OperationKind = kind
};
_request.CopyFrom(request);
_targetedFields.Relationships.Add(relationship);
ParseDataForRelationship(relationship, secondaryResourceContext, operation, primaryResource);
var targetedFields = new TargetedFields
{
Attributes = _targetedFields.Attributes.ToHashSet(),
Relationships = _targetedFields.Relationships.ToHashSet()
};
return(new OperationContainer(kind, primaryResource, targetedFields, request));
}
/// <summary>
/// Gets the resource object for <paramref name="parent"/> by searching the included list.
/// If it was not already built, it is constructed and added to the inclusion list.
/// </summary>
private ResourceObject GetOrBuildResourceObject(IIdentifiable parent, RelationshipAttribute relationship)
{
var type = parent.GetType();
var resourceName = ResourceContextProvider.GetResourceContext(type).PublicName;
var entry = _included.SingleOrDefault(ro => ro.Type == resourceName && ro.Id == parent.StringId);
if (entry == null)
{
entry = Build(parent, _fieldsToSerialize.GetAttributes(type, relationship), _fieldsToSerialize.GetRelationships(type));
_included.Add(entry);
}
return(entry);
}
private void UpdateRelationships(ResourceObject resourceObject)
{
foreach (string relationshipName in resourceObject.Relationships.Keys.ToArray())
{
ResourceContext resourceContext = ResourceContextProvider.GetResourceContext(resourceObject.Type);
RelationshipAttribute relationship = resourceContext.Relationships.Single(rel => rel.PublicName == relationshipName);
if (!IsRelationshipInSparseFieldSet(relationship))
{
resourceObject.Relationships.Remove(relationshipName);
}
}
resourceObject.Relationships = PruneRelationshipEntries(resourceObject);
}
/// <summary>
/// Sets a HasMany relationship.
/// </summary>
private void SetHasManyRelationship(
IIdentifiable resource,
HasManyAttribute attr,
RelationshipEntry relationshipData)
{
if (relationshipData.Data != null)
{ // if the relationship is set to null, no need to set the navigation property to null: this is the default value.
var relatedResources = relationshipData.ManyData.Select(rio =>
{
var relationshipType = ResourceContextProvider.GetResourceContext(rio.Type).ResourceType;
var relatedInstance = (IIdentifiable)ResourceFactory.CreateInstance(relationshipType);
relatedInstance.StringId = rio.Id;
return(relatedInstance);
});
var convertedCollection = TypeHelper.CopyToTypedCollection(relatedResources, attr.Property.PropertyType);
attr.SetValue(resource, convertedCollection, ResourceFactory);
}
AfterProcessField(resource, attr, relationshipData);
}
/// <summary>
/// Searches for and parses the included relationship.
/// </summary>
private IIdentifiable ParseIncludedRelationship(ResourceIdentifierObject relatedResourceIdentifier)
{
var relatedResourceContext = ResourceContextProvider.GetResourceContext(relatedResourceIdentifier.Type);
if (relatedResourceContext == null)
{
throw new InvalidOperationException($"Included type '{relatedResourceIdentifier.Type}' is not a registered JSON:API resource.");
}
var relatedInstance = ResourceFactory.CreateInstance(relatedResourceContext.ResourceType);
relatedInstance.StringId = relatedResourceIdentifier.Id;
var includedResource = GetLinkedResource(relatedResourceIdentifier);
if (includedResource != null)
{
SetAttributes(relatedInstance, includedResource.Attributes, relatedResourceContext.Attributes);
SetRelationships(relatedInstance, includedResource.Relationships, relatedResourceContext.Relationships);
}
return(relatedInstance);
}
/// <summary>
/// Creates an instance of the referenced type in <paramref name="data"/>
/// and sets its attributes and relationships.
/// </summary>
/// <returns>The parsed resource.</returns>
private IIdentifiable ParseResourceObject(ResourceObject data)
{
var resourceContext = ResourceContextProvider.GetResourceContext(data.Type);
if (resourceContext == null)
{
throw new InvalidRequestBodyException("Payload includes unknown resource type.",
$"The resource '{data.Type}' is not registered on the resource graph. " +
"If you are using Entity Framework Core, make sure the DbSet matches the expected resource name. " +
"If you have manually registered the resource, check that the call to Add correctly sets the public name.", null);
}
var resource = (IIdentifiable)ResourceFactory.CreateInstance(resourceContext.ResourceType);
resource = SetAttributes(resource, data.Attributes, resourceContext.Attributes);
resource = SetRelationships(resource, data.Relationships, resourceContext.Relationships);
if (data.Id != null)
{
resource.StringId = data.Id;
}
return(resource);
}
