question: public static void begin ( ServletRequest request , ServletResponse response , String serviceName , String objectId ) throws ServletException { ServiceContext context = ( ServiceContext ) _localContext . get ( ) ; if ( context == null ) { context = new ServiceContext ( ) ; _localContext . set ( context ) ; } context . _request = request ; context . _response = response ; context . _serviceName = serviceName ; context . _objectId = objectId ; context . _count ++ ; }
target:  Sets the request object prior to calling the service's method.