public void setDateRange(DateTime minDate, DateTime maxDate, int tickCount) throws Exception {
/* validate dates */
long minDateTS = (minDate != null) ? minDate.getTimeSec() : 0L;
long maxDateTS = (maxDate != null) ? maxDate.getTimeSec() : 0L;
if ((minDate == null)
|| (minDateTS < MIN_DATE)
|| (maxDate == null)
|| (maxDateTS < MIN_DATE)
|| (minDateTS >= maxDateTS)
|| ((maxDateTS - minDateTS) <= 60L)) {
throw new Exception("Invalid Date range specification");
}
/* adjust 'maxDateTS' to make sure (maxDateTS - minDateTS) is a multiple of 'tickCount' */
maxDateTS += (maxDateTS - minDateTS) % tickCount;
/* vars */
this.minDateTS = minDateTS;
this.maxDateTS = maxDateTS;
this.timeZone = minDate.getTimeZone();
this.xTickCount = (tickCount > 0) ? tickCount : 6;
}
