/// <summary>
/// Gets the resource object for <paramref name="parent"/> by searching the included list.
/// If it was not already build, it is constructed and added to the included list.
/// </summary>
/// <param name="parent"></param>
/// <param name="relationship"></param>
/// <returns></returns>
private ResourceObject GetOrBuildResourceObject(IIdentifiable parent, RelationshipAttribute relationship)
{
var type = parent.GetType();
var resourceName = _provider.GetResourceContext(type).ResourceName;
var entry = _included.SingleOrDefault(ro => ro.Type == resourceName && ro.Id == parent.StringId);
if (entry == null)
{
entry = Build(parent, _fieldsToSerialize.GetAllowedAttributes(type, relationship), _fieldsToSerialize.GetAllowedRelationships(type));
_included.Add(entry);
}
return(entry);
}
/// <summary>
/// Gets the list of attributes to serialize for the given <paramref name="resourceType"/>.
/// Note that the choice omitting null-values is not handled here,
/// but in <see cref="IResourceObjectBuilderSettingsProvider"/>.
/// </summary>
/// <param name="resourceType">Type of entity to be serialized</param>
/// <returns>List of allowed attributes in the serialized result</returns>
private List <AttrAttribute> GetAttributesToSerialize(Type resourceType)
{
// Check the attributes cache to see if the allowed attrs for this resource type were determined before.
if (_attributesToSerializeCache.TryGetValue(resourceType, out List <AttrAttribute> allowedAttributes))
{
return(allowedAttributes);
}
// Get the list of attributes to be exposed for this type
allowedAttributes = _fieldsToSerialize.GetAllowedAttributes(resourceType);
// add to cache so we we don't have to look this up next time.
_attributesToSerializeCache.Add(resourceType, allowedAttributes);
return(allowedAttributes);
}