# File lib/tapkit/control/qualifier.rb, line 321
                        def operator_string( operator )
                                case operator
                                when EQUAL            then '='
                                when NOT_EQUAL        then '!='
                                when GREATER          then '>'
                                when GREATER_OR_EQUAL then '>='
                                when LESS             then '<'
                                when LESS_OR_EQUAL    then '<='
                                when LIKE             then 'like'
                                when CI_LIKE          then 'cilike'
                                end
                        end