# File lib/dbd_pg/Pg.rb, line 387
        def convert(obj,typeid)
          return nil if obj.nil?
          
          if @elem_map.include?( typeid ) then
            convert_array( obj, @elem_map[ typeid ] )
          else
            converter = @type_map[typeid] || :as_str
            #raise DBI::InterfaceError, "Unsupported Type (typeid=#{typeid})" if converter.nil?
            @coerce.coerce(converter, obj)
          end

        end