// Set a flag so that we can detect if the filter has been
// properly installed.
request.setAttribute(_FILTER_EXECUTED_KEY, Boolean.TRUE);
ExternalContext externalContext = new ServletExternalContext(_servletContext, request, response);
GlobalConfiguratorImpl config = GlobalConfiguratorImpl.getInstance();
config.beginRequest(externalContext);
//To maintain backward compatibilty, wrap the request at the filter level
Map<String, String[]> addedParams = FileUploadConfiguratorImpl.getAddedParameters(externalContext);