IBM Streams 4.3.0

TimeInterval windows

A timeInterval window collects tuples into fixed-duration intervals defined over event time.

TimeInterval windows collect tuples into window panes specified by event-time intervals. An event-time interval is specified by its low (t0) and high (t0+T) endpoints and contains all the tuples with event-times t wheret0 <= t < t0+T.

A timeInterval window partitions the time domain into equally sized intervals of the form:

[N * creationPeriod + intervalOffset, (N + 1) * creationPeriod + intervalOffset + intervalDuration)

where intervalOffset, creationPeriod, and intervalDuration are defined by the options passed to the SPL window clause.

Note:

Time values are expressed in seconds. They can also be fractional, such as creationPeriod(0.05).
Only floating point values are supported.