protected ActionRequest(String servletPath,
    String pathInfo,
    ActionRequest request,
    PortletEnvironment environment) 
{
        super(servletPath, pathInfo, request, environment);
}

Creates a ActionRequest based on a real ActionRequest object

 public ActionRequest getActionRequest() 
{
        return (javax.portlet.ActionRequest) getPortletRequest();
}

Type cast portletRequest to ActionRequest

 public String getCharacterEncoding() 
{
        if (super.getCharacterEncoding() == null) {
            return getActionRequest().getCharacterEncoding();
        }
        return super.getCharacterEncoding();
}

 public int getContentLength() 
{
        return getActionRequest().getContentLength();
}

Action request provides content length for custom upload handling

 public String getContentType() 
{
        return getActionRequest().getContentType();
}

Action request provides content type for custom upload handling

 public InputStream getInputStream() throws IOException 
{
        return getActionRequest().getPortletInputStream();
}

 public String getMethod() 
{
        return "POST";
}

Action request can be always recognized by POST method

 public BufferedReader getReader() throws IOException 
{
        return getActionRequest().getReader();
}