oship-dev team mailing list archive

[Diego Manhães Pinheiro <me@xxxxxxxxxxxxxx>]

2010/11/30 Tim Cook <timothywayne.cook@xxxxxxxxx>:
> Hi Diego,
>
>
> On Tue, 2010-11-30 at 19:00 -0200, Diego Manhães Pinheiro wrote:
>> Hi folks,
>>
>> Once again, I'm stuck on a new problem about date/time object : How
>> calculate a partial date/time magnitude ? Is It must be different from
>> a complete date/time ? At the moment, I'm considering a partial
>> date/time such as a timeline. For example : the magnitude from 1953-10
>> partial date is the days sum from 0000/01/01 to 1953/10/31, according
>> to the algorithm that I implemented. Other example : The 1953 partial
>> date means the timeline from 0000/01/01 until 1953/12/31 . Do you mean
>> that is a good behavior ? If not , how it should be ?
>
> A partial datetime magnitude can only be calculated based on the
> smallest unit available.
>
> For example:
> a magnitude for 1953-10 would be the number of months 0001-01 to 1953-10
I think you missed an important point : magnitude must be a numeric
value as days (page 58 on data_types spec.) on DV_DATE objects and in
the seconds( page 59 ) for DV_TIME and DV_DATE_TIME (page 60), being
able to accept a partial or non-partial date/time format. So, How
should I proceed ?
>
>
>>
>> Tim:
>> Do have any progress about the issues related to the ISO8601 standard,
>> Gregorian Calendar and "year zero" that I asked here ? After read lots
>> of sources on the Internet, now I'm wondering the openEHR
>> specification could be wrong on consider the year 0000 as a valid
>> year. Which part of specification you mean that's correct and which
>> part is not ?
>
> Apologies.  I thought this was settled.  The openEHR specs are
> incorrect.  There is no year zero.
Thanks. I didn't have any options, unless ask on the mailing list.
This topic is totally messed up both on the specification and on the
Internet.
>
>>
>> I'm just finding a way to fix these problems in order to push all code
>> changes on date/time classes from the quantity module to the Launchpad
>> repository.
>>
>
> Excellent.  :-)
>
>
> --Tim
>
>
>