Thinking about this more...
It might be easier to leverage the existing temporal expression + time
duration code, and simply perform a check to see if a DST transition
occurred during the billing period. You can perform that check by using
the TimeZone object.
-Adrian
On 1/31/2011 11:05 AM, [email protected] wrote:
That is an interesting problem to solve. At first glance it seems you
would need separate event start and event end expressions.
-Adrian
Quoting Scott Gray <[email protected]>:
Thanks Adrian, I had a feeling that would be the case but just wanted
to double check.
What I am trying to do is model different ranges of time in which a
customer would get charged a given rate (standard, overtime, double
time). The only concern I have with using a rate start time and
duration is daylight saving, if a window were to begin at midnight
and end at 8.30am then using an 8.5hr duration wouldn't work
correctly when daylight savings starts and ends. So for me it's less
important how long a window lasts but rather at what specific time it
closes.
Thanks
Scott
HotWax Media
http://www.hotwaxmedia.com
On 1/02/2011, at 3:03 AM, Adrian Crum wrote:
Scott,
The TimeOfDay range expression was a bad design and it didn't work,
so it was replaced with MinuteRange and HourRange.
It looks like you might be trying to combine a temporal expression
with a duration. Does the event keep repeating from 05:00 to 08:30?
Or does it occur at 05:00 and have a duration of 3.5 hours? Keep in
mind the Temporal Expression indicates when an event occurs, not how
long it lasts.
-Adrian
On 1/30/2011 6:47 PM, Scott Gray wrote:
Hi Adrian (I assume you're the only one that knows...),
In the original jira issue for the temporal expression
implementation there was mention of a TimeOfDayRange expression
(http://markmail.org/message/pz2i3kzavcnee4ca) but I can't seem to
find a corresponding class in the trunk?
I'm looking to model something along the lines of:
Intersection:
DayOfWeekRange(Monday, Friday)
Union:
TimeOfDayRange(5:00, 08:30)
TimeOfDayRange(17:30, 22:30)
At the moment the only way I can see to do this is with something
quite complex like:
Intersection:
DayOfWeekRange(Monday, Friday)
Union:
Union:
HourOfDayRange(5:00, 08:00)
Intersection:
HourOfDayRange(08:00, 08:00)
MinuteOfDyRange(0, 30)
Union:
Intersection:
HourOfDayRange(17:00, 17:00)
MinuteOfDyRange(30, 59)
HourOfDayRange(18:00, 22:00)
Intersection:
HourOfDayRange(22:00, 22:00)
MinuteOfDyRange(0, 30)
Assuming the above is even correct, is it my only option in the
current implementation?
Thanks
Scott
HotWax Media
http://www.hotwaxmedia.com
