/// <summary>
/// Constructor
/// </summary>
/// <param name="compositionProvider"></param>
public MvcMefDependencyResolver(CompositionContextProvider compositionProvider)
{
if (compositionProvider == null)
{
throw new ArgumentNullException("compositionProvider");
}
_compositionProvider = compositionProvider;
}
/// <summary>
/// constructor
/// </summary>
/// <param name="compositionProvider"></param>
public MvcMefControllerFactory(CompositionContextProvider compositionProvider)
{
if (compositionProvider == null)
{
throw new ArgumentNullException("compositionProvider");
}
_compositionProvider = compositionProvider;
}
/// <summary>
/// Get a composition sub container scoped to the http request
/// </summary>
/// <returns></returns>
public CompositionContext GetCompositionContext()
{
var currentHttpContext = HttpContext.Current;
var export = CompositionContextProvider.GetCurrentCompositionContext(currentHttpContext);
if (export == null)
{
export = _compositionContextFactory.CreateExport();
AddCompositionContext(currentHttpContext, export);
}
return(export.Value);
}
/// <summary>
/// Disposes of composition contexts (if any) which were allocated in the http request
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnEndRequest(object sender, EventArgs e)
{
CompositionContextProvider.DisposeCurrentCompositionContext(HttpContext.Current);
}
