public override IEnumerable <TimeWindow> AssignWindows(TElement element, long timestamp, WindowAssignerContext context)
{
var now = context.CurrentProcessingTime;
var start = TimeWindow.GetWindowStartWithOffset(now, Offset, Size);
yield return(new TimeWindow(start, start + Size));
}
public override IEnumerable <TimeWindow> AssignWindows(TElement element, long timestamp, WindowAssignerContext context)
{
timestamp = context.CurrentProcessingTime;
var lastStart = TimeWindow.GetWindowStartWithOffset(timestamp, Offset, Slide);
for (var start = lastStart; start > timestamp - Size; start -= Slide)
{
yield return(new TimeWindow(start, start + Size));
}
}
public override IEnumerable <TimeWindow> AssignWindows(TElement element, long timestamp, WindowAssignerContext context)
{
// Long.MIN_VALUE is currently assigned when no timestamp is present
if (timestamp <= long.MinValue)
{
throw new RuntimeException("Record has Long.MIN_VALUE timestamp (= no timestamp marker). " +
"Is the time characteristic set to 'ProcessingTime', or did you forget to call " +
"'DataStream.assignTimestampsAndWatermarks(...)'?");
}
var start = TimeWindow.GetWindowStartWithOffset(timestamp, Offset, Size);
yield return(new TimeWindow(start, start + Size));
}