Terracotta Discussion Forums

HI,

how to constract crone expression for every 16 week in a year

regard's
chimmani

You can't.

But you can do it with DateIntervalTrigger (introduced with Quartz 1.7).

You can also sort-of do it with SimpleTrigger - repeat interval of:

16 * 7 * 24 * 60 * 60 * 1000 milliseconds.

Note though that doing it with SimpleTrigger will make it always fire that many milliseconds apart - and there aren't always the same number of milliseconds in a 16 week period (consider oddities such as Daylight Savings, leap seconds, etc.). -- so the time of day of firing could drift a bit over time. If that doesn't matter, then SimpleTrigger is... simple!