Re: [apps-discuss] I-D Action: draft-ietf-appsawg-acct-uri-05.txt

[DataPacRat <[e-mail]>]

On Tue, Jul 2, 2013 at 4:21 PM, Bob Wyman <[e-mail]> wrote:
> On Mon, Jul 1, 2013 at 1:19 PM, Markus Lanthaler <[e-mail]>
> wrote:

>> I'm wondering whether it would make sense to add a feature allowing
>> associate a date to an account. This would address problems arising from
>> account recycling (think Yahoo). Maybe something like
>>
>>    acct:[e-mail]?date=20130701
> It seems to me that if one wanted to use dates as part of identifiers, you
> would probably want to learn from tag URI's as defined in RFC 4151. Tag
> URI's handle the problem of creating identifiers that are unique across time
> -- which appears to be the use-case you're looking to address.
>
> Thus, rather than the syntax you suggested, you'd be using something like
> this: (i.e. use a comma, not a question-mark.)
>
> acct:[e-mail],2001-09-15
>
> The relevant ABNF bits from RFC4151 are:
>>
>> taggingEntity = authorityName "," date
>> authorityName = DNSname / emailAddress
>> date = year ["-" month ["-" day]]

While being inspired by tag:, you needn't feel limited by its
particular syntax. The date field on tag doesn't allow any more
precision than midnight on a particular day; and it only allows for
indicating particular moments rather than periods of time. It should
be simple enough to draw on ISO 8601's full range of time-indicators,
to allow (while not requiring) the indication of any particular second
(eg, 2001-09-15T12:34:56Z), or a period of time (eg, 2001-01-01/P1Y to
indicate the entirety of that year).


Thank you for your time,
--
DataPacRat
"Then again, I could be wrong."