/// <summary>
/// Wraps a POCO object returned by the service method with an <see cref="IResult"/>.
/// </summary>
/// <param name="handler">The service context handler.</param>
/// <param name="returnedObj">The returned object.</param>
/// <param name="methodReturnType">The method return type.</param>
/// <returns>The wrapper result.</returns>
public virtual IResult Wrap(IServiceContextHandler handler, object returnedObj, Type methodReturnType)
{
if (handler == null)
{
throw new ArgumentNullException("handler");
}
var result = returnedObj as IResult;
return result ?? CreateFormatterResult(handler, returnedObj, methodReturnType);
}
private IResult CreateFormatterResult(IServiceContextHandler handler, object returnedObj, Type methodReturnType)
{
string preferredMediaType = m_contentNegotiator.GetPreferredMediaType(handler.Context.Request);
IMediaTypeFormatter formatter = MediaTypeFormatterRegistry.GetHandlerFormatter(handler, preferredMediaType) ??
MediaTypeFormatterRegistry.GetFormatter(preferredMediaType);
if (formatter == null || !formatter.CanFormatResponse)
{
throw new HttpResponseException(HttpStatusCode.NotAcceptable, Resources.Global.MissingOrInvalidAcceptType);
}
return formatter.FormatResponse(handler.Context, methodReturnType, returnedObj, preferredMediaType);
}
public static void AddHandlerFormatter(IServiceContextHandler handler, string mediaType, IMediaTypeFormatter formatter)
{
handlerFormatters.AddOrUpdate(handler,
handlerToAdd => AddHandlerFactory(mediaType, formatter),
(handlerToUpdate, formattersToUpdate) => UpdateHandlerFactory(mediaType, formatter, formattersToUpdate));
}
private static void GenerateFaultBody(IServiceContext context, IServiceContextHandler handler, FaultCollection faults)
{
if (faults.General.Length == 0 && faults.Resource.Length == 0)
{
return;
}
var resultWrapper = Rest.Configuration.ServiceLocator.GetService<IResultWrapper>();
IResult result;
try
{
result = resultWrapper.Wrap(handler, faults, faults.GetType());
}
catch (HttpResponseException ex)
{
context.Response.SetStatus(ex.StatusCode, ex.StatusDescription);
return;
}
if (result != null)
{
result.Execute(context);
}
}
public static IMediaTypeFormatter GetHandlerFormatter(IServiceContextHandler handler, string mediaType)
{
if (handler == null || String.IsNullOrEmpty(mediaType))
{
return null;
}
Dictionary<string, IMediaTypeFormatter> formatterDictionary;
if (!handlerFormatters.TryGetValue(handler, out formatterDictionary))
{
return null;
}
IMediaTypeFormatter formatter;
return formatterDictionary.TryGetValue(mediaType, out formatter) ? formatter : null;
}