The %SYS.Date.SlidingWindow class supports methods for
setting, modifying and inspecting the system-wide or
process-specific sliding window definitions. With the
exception of Get(), all the other class methods return a
%Status to indicate success or failure. Any modified
system-wide definition will be active until the system
is restarted. If necessary, users can add the new
settings to ^ZSTU or ^%ZSTART in order to make them
survive across reboots.
In most cases, the first parameter indicates whether the call is system or process-specific:
Scope = 0: system (default)
Scope = 1: process
Depending of the method, start and end dates can be specified in 3 different ways:
- Absolute Dates, represented in $H format
- Absolute Years, represented by 4-digit numbers relative to the start of the Common Era (0 C.E.)
- Relative Years, represented by numbers relative the current year
Get current default definition in the format:
Where OldStartDate and OldEndDate are absolute dates in $H format representing the start and end, respectively, of the current sliding window.
Set default to be an "empty" window, so that all years display using 4 digits.
Set date window to begin on the absolute year StarYear and to end on the absolute year EndYear.
Set date window to begin on the absolute date StartDate and to end on the absolute date EndDate.
Set date window to begin on the relative year StartYear and to end on the relative year EndYear.
Example: If issued in 2008, the following command would establish a process-specific sliding window definition which would result in this process displaying two-digit years for any dates in the range 01/01/1918 through 12/31/2017, inclusive.
Remove current default so that a 20th century fixed window is used by default.
Set process window to be the same as the current system default.