private static String GenerateOperatorName <TE, TW>(
WindowAssigner <TE, TW> assigner,
WindowTrigger <TE, TW> trigger,
IWindowEvictor <TE, TW> evictor,
IFunction function1,
IFunction function2) where TW : Window
{
return("Window(" +
assigner + ", " +
trigger.GetType().Name + ", " +
(evictor == null ? "" : (evictor.GetType().Name + ", ")) +
GenerateFunctionName(function1) +
(function2 == null ? "" : (", " + GenerateFunctionName(function2))) +
")");
}
public WindowContext(TWindow window,
WindowAssigner <TInput, TWindow> windowAssigner,
AbstractKeyedStateBackend <TKey> keyedStateBackend,
ExecutionConfig executionConfig,
IInternalTimerService <TWindow> internalTimerService,
IOutput <StreamRecord <TOutput> > output,
WindowOperator <TKey, TInput, TAccumulator, TOutput, TWindow> windowOperator)
{
Window = window;
_internalTimerService = internalTimerService;
_output = output;
_windowOperator = windowOperator;
WindowStateStore = windowAssigner is MergingWindowAssigner <TInput, TWindow>
?(AbstractPerWindowStateStore) new MergingWindowStateStore(keyedStateBackend, executionConfig)
: new PerWindowStateStore(keyedStateBackend, executionConfig);
}
/// <summary>
/// Windows this data stream to a <see cref="AllWindowedStream{TElement,TWindow}"/>, which evaluates windows over a non key grouped stream. Elements are put into windows by a <see cref="WindowAssigner{TElement,TWindow}"/>. The grouping of elements is done by window.
/// Note: This operation is inherently non-parallel since all elements have to pass through the same operator instance.
/// </summary>
/// <typeparam name="TWindow"></typeparam>
/// <param name="assigner">The <see cref="WindowAssigner{TElement,TWindow}"/> that assigns elements to windows.</param>
/// <returns>The trigger windows data stream.</returns>
public AllWindowedStream <TElement, TWindow> WindowAll <TWindow>(WindowAssigner <TElement, TWindow> assigner)
where TWindow : Window => new AllWindowedStream <TElement, TWindow>(this, assigner);
/// <summary>
/// Windows this data stream to a <see cref="WindowedStream{T,TK,TW}"/>, which evaluates windows over a key grouped stream. Elements are put into windows by a <see cref="WindowAssigner{T,TW}"/>. The grouping of elements is done both by key and by window.
/// </summary>
/// <typeparam name="TW"></typeparam>
/// <param name="assigner">The WindowAssigner that assigns elements to windows.</param>
/// <returns>The trigger windows data stream.</returns>
public WindowedStream <TElement, TKey, TW> Window <TW>(WindowAssigner <TElement, TW> assigner)
where TW : Window
{
return(new WindowedStream <TElement, TKey, TW>(this, assigner));
}
public AllWindowedStream(DataStream <TElement> input, WindowAssigner <TElement, TWindow> windowAssigner)
{
_assigner = windowAssigner;
_trigger = windowAssigner.GetDefaultTrigger(input.ExecutionEnvironment);
}
public WindowedStream(KeyedStream <TElement, TKey> input, WindowAssigner <TElement, TWindow> windowAssigner)
{
_input = input;
_assigner = windowAssigner;
_trigger = windowAssigner.GetDefaultTrigger(input.ExecutionEnvironment);
}
