public static void Run()
{
var env = StreamExecutionEnvironment.GetExecutionEnvironment()
.SetStreamTimeCharacteristic(TimeCharacteristic.EventTime)
.SetParallelism(1);
var stream = env.ReadTextFile("").Map(new CarDatumMapper());
var transformation = stream.AssignTimestampsAndWatermarks(new CarTimestampExtractor())
.KeyBy("Id")
.Window(GlobalWindowAssigner <CarDatum> .Create())
.Evictor(TimeWindowEvictor.Of <CarDatum, GlobalWindow>(TimeSpan.FromSeconds(10)))
.Trigger(DeltaWindowTrigger.Of <CarDatum, GlobalWindow>(50, new CarDeltaFunctor(), null))
.MaxBy(1);
transformation.Print();
env.Execute("CarTopSpeedWindowingExample");
}
/// <summary>
/// Windows this <see cref="DataStream{TElement}"/> into sliding count windows.
/// Note: This operation is inherently non-parallel since all elements have to pass through the same operator instance.
/// </summary>
/// <param name="size">The size of the windows in number of elements.</param>
/// <param name="slide">The slide interval in number of elements.</param>
/// <returns></returns>
public AllWindowedStream <TElement, GlobalWindow> CountWindowAll(long size, long slide) =>
WindowAll(GlobalWindowAssigner <TElement> .Create())
.Evictor(CountWindowEvictor.Of <TElement, GlobalWindow>(size))
.Trigger(CountWindowTrigger.Of <TElement, GlobalWindow>(slide));
/// <summary>
/// Windows this <see cref="DataStream{TElement}"/> into tumbling count windows.
/// Note: This operation is inherently non-parallel since all elements have to pass through the same operator instance.
/// </summary>
/// <param name="size">The size of the windows in number of elements.</param>
/// <returns></returns>
public AllWindowedStream <TElement, GlobalWindow> CountWindowAll(long size) =>
WindowAll(GlobalWindowAssigner <TElement> .Create())
.Trigger(PurgingWindowTrigger.Of(CountWindowTrigger.Of <TElement, GlobalWindow>(size)));
