RE: [ws-calendar-comment] Comment on PIM 1.0 CS01 09 October 2014

This is not a pre-judgment on the comment, because I sense that as well. ASHRAE scenarios not only frequently require times w/ or w/o time zones, but w or w/o DST as well. Business hours may need an opening at  8”00 in whatever the local time zone is, automatically adjusting for DST.

As to availability, there are a number of ways to express “every Tuesday…


There is Every 7 days starting with * this * Tuesday
There is weekly, occurring on * these * days of the week
And so on.


I have particularly considered the sort of scenarios you talk about for live energy models. A live energy model is grounded in hard dates, the projected energy model may well be based on days of the week with  no starting date indicated yet.

Of course, this is a PIM, and it may be that these issues are best addressed in a PSM. A couple of us have been toying with a Minimal PSM (in XSD) that expresses the PIM UML model and might make allowances for  the flexibility you indicate.

None of this is speaking ex cathedra. We, as a TC, have not discussed your comments. This is just a first reaction to your comment. Thanks for submitting it.

tc

“It is the theory that decides what can be observed."
—Albert Einstein
Toby Considine
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Information Technology Services  University of North Carolina  Chapel Hill, NC
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Chair, OASIS OBIX Technical Committee  Chair, OASIS WS-Calendar Technical Committee  Editor, OASIS EMIX, Energy Interoperation TC
From:  Steve Ray (CMU) [mailto:]
Sent:  Saturday, December 20, 2014 2:02 PM
To:  
Subject:  [ws-calendar-comment] Comment on PIM 1.0 CS01 09 October 2014

Please consider adding a Date class (Date without time, perhaps with Time Zone) and a Time class (Time without date, perhaps with Time Zone) to the model. This would be useful in models [ASHRAE SPC201] that we are currently working with.
It is not clear how one would express (say) an availability of "every Tuesday" for Availability. Can the specification express time of day with day of week, say "8am, Monday through Friday"?


- Steve

Steven R. Ray, Ph.D.
Distinguished Research Fellow
Carnegie Mellon University
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