# File lib/dbi/handles/driver.rb, line 15
        def connect(db_args, user, auth, params)

            user = @handle.default_user[0] if user.nil?
            auth = @handle.default_user[1] if auth.nil?

            # TODO: what if only one of them is nil?
            #if user.nil? and auth.nil? then
            #  user, auth = @handle.default_user
            #end

            params ||= {}
            new_params = @handle.default_attributes
            params.each {|k,v| new_params[k] = v} 

            if params.has_key?(:_convert_types)
                @convert_types = params[:_convert_types]
            end

            db = @handle.connect(db_args, user, auth, new_params)
            dbh = DatabaseHandle.new(db, @convert_types)
            # FIXME trace
            # dbh.trace(@trace_mode, @trace_output)
            dbh.driver_name = @driver_name

            if block_given?
                begin
                    yield dbh
                ensure  
                    dbh.disconnect if dbh.connected?
                end  
            else
                return dbh
            end
        end