/**
* Get the first Date From date based on Accumulation
* @param from date
* @return first date
*/
public DateTime?GetDateFrom(DateTime?from)
{
if (from == null)
{
return(from);
}
if (BALANCEACCUMULATION_CalendarMonth.Equals(GetBALANCEACCUMULATION()))
{
return(TimeUtil.Trunc(from, TimeUtil.TRUNC_MONTH));
}
else if (BALANCEACCUMULATION_CalendarWeek.Equals(GetBALANCEACCUMULATION()))
{
return(TimeUtil.Trunc(from, TimeUtil.TRUNC_WEEK));
}
else if (BALANCEACCUMULATION_PeriodOfAViennaCalendar.Equals(GetBALANCEACCUMULATION()) &&
GetC_Calendar_ID() != 0)
{
MPeriod period = MPeriod.GetOfCalendar(GetCtx(), GetC_Calendar_ID(), from);
if (period != null)
{
return(period.GetStartDate());
}
}
return(from);
}