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  1. OMG Issue

SPTP — time/frequency definitions

  • Key: SPTP-19
  • Legacy Issue Number: 5319
  • Status: open  
  • Source: The MathWorks ( Mr. Alan Moore)
  • Summary:

    "The general timing specification (GTS) semantically is a general set of
    points in time. The purpose of the GTS is to specify the complex timing of
    events and actions (mainly in orders and scheduling systems.) The GTS also
    supports the cyclical validity patterns that may exist for certain kinds of
    information, such as phone numbers (evening, daytime)...
    The GTS data type has the following aspects:
    · GTS as a general set of points in time (SET<TS>). From this aspect GTS
    answers whether any given point in time falls in the schedule described by
    the GTS value.
    · GTS as the combination of multiple periodic intervals of time. This aspect
    describes how both simple and complex repeat-patterns are specified with the
    · GTS as a generator of a sequence of intervals of point in time
    (LIST<IVL<TS>>). From this aspect, GTS can generate all occurrence intervals
    of an event or action, or all validity periods for a fact.
    · GTS as an expression-syntax defined for a calendar. This aspect is the GTS
    literal form.

    In all cases the GTS is defined as a set of point in time (SET<TS>). Using
    the set operations, union,
    intersection and difference, more complex sets of time can be constructed
    from simpler ones. Ultimately the building blocks from which all GTS values
    are constructed are interval, periodic interval, and event-related periodic
    interval. The construction of the GTS can be specified in the literal

    I've recently passed part of the HL7 data type spec to Bran Selic,

    I arguing for using this opportunity to develop a more broadly useful and
    powerful time

    [BTW, I'd personally enumerate the days of the week with Sunday first, not

  • Reported: SPTP 1.0b1 — Wed, 22 May 2002 04:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT