mdx first value of a period - mdx

Question

I have a cube with a 'sales' measure, where we have the amount of sold units each day. We have a time dimension with 'Year > week > day'.
I need to have the sales for the first and the last day in a period with non empty sales for a calculated field. I tried with OPENINGPERIOD and CLOSINGPERIOD but they return for a week period just Monday and Sunday... the problem is that sometimes Monday is holiday and Sunday is always holiday and I get empty data (we have no sales on holidays)... Here is my example for last day of a period:
WITH
MEMBER
[Measures].[sales end] AS
'((CLOSINGPERIOD([Time.Weeks].[Day],[Time.Weeks].CurrentMember)
, [Measures].[sales]))'
SELECT
{[Measures].[sales], [Measures].[sales end]} ON COLUMNS,
NON EMPTY
({[Time.Weeks].[Week].Members}) ON ROWS
FROM [cubSales]
I need to get the last day with non empty sales in that period... it should be Friday, but if Friday is holiday, it should be Thursday... I mean the last day for the week with a value for the measure sales..

Answer 1

An easy solution could be to just omit holiday days from your time dimension.

Answer 2

Mondrian has no concept of holidays. I would implement my own MDX function with a built-in list of holidays. It's a flexible approach which can be extended to support different holidays from different countries.

Answer 3

Tested on our cube and seems to work ok (just doesn't say anything about holidays!)
SELECT
{
[Measures].[sales]
} ON COLUMNS
,NON EMPTY
Generate
(
[Time.Weeks].MEMBERS
,Tail
(
NonEmpty
(
[Time.Weeks].CurrentMember * [Time.Weeks].[Day].MEMBERS //<<I think .members is generally default but should do the same thing if we are explicit
,[Measures].[sales]
)
)
) ON ROWS
FROM [cubSales];