org.pentaho.di.trans.streaming.api

接口 StreamWindow<I,O>

所有已知实现类:

FixedTimeStreamWindow

public interface StreamWindow<I,O>

A StreamWindow governs buffering and sending rows to a sub-transformation. Windowing strategies could include sending buffered rows * after a given interval * on a sliding interval * after a fixed number of rows have been read. *

方法概要

限定符和类型	方法和说明
Iterable<O>	buffer(io.reactivex.Flowable<I> flowable) Takes an iterable (would typically be a StreamSource.flowable()} call) and buffers it according to the window strategy.

方法详细资料

buffer

Iterable<O> buffer(io.reactivex.Flowable<I> flowable)

Takes an iterable (would typically be a StreamSource.flowable()} call) and buffers it according to the window strategy. Returns an iterable of data for the window. Depending on stream implementation, the output could also be transformed. For example, the FixedTimeStreamWindow will pass windowed data to a subtransformation, and return the transformed results.