void function ( ) { }
called by the web container to indicate to a filter that it is being taken out of service . this method is only called once all threads within the filter 's dofilter method have exited or after a timeout period has passed . after the web container calls this method , it will not call the dofilter method again on this instance of the filter . concode_field_sep String PERIOD concode_elem_sep String HITS concode_elem_sep int hits concode_elem_sep int period concode_field_sep void init concode_elem_sep void doFilter