The pipeline processing valve responsible for loading the user prefered locale and encoding.
The pipeline processing valve that read the parameters from request parameters and from parsed url path and store it as a parameters container in thread context.
The pipeline processing valve which redirect to appropriate view if the exception occured during pipeline processing.
The Upload component is the implementation of the pipeline processing valve, that is run at very early stage of the pipeline processing. When it discovers the "multipart/form-data" it starts to process the request storing the uploaded items into the context.
The pipeline valve that initialize all needed data for mvc pipeline processing