IN- The type of the input value.
OUT- The type of the output value.
W- The type of
Windowthat this window function can be applied on.
@Public public interface AllWindowFunction<IN,OUT,W extends Window> extends Function, Serializable
window- The window that is being evaluated.
values- The elements in the window being evaluated.
out- A collector for emitting elements.
Exception- The function may throw exceptions to fail the program and trigger recovery.
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