com.yahoo.bullet.querying.aggregations

Interface Strategy

All Superinterfaces:

Closable, Monoidal

All Known Implementing Classes:

FrequentItemsSketchingStrategy, GroupAllStrategy, QuantileSketchingStrategy, RawStrategy, SketchingStrategy, ThetaSketchingStrategy, TupleSketchingStrategy

public interface Strategy
extends Monoidal

Method Summary

Modifier and Type	Method and Description
default Meta	getMetadata() Get the Meta so far.
default boolean	isClosed() Returns false if more data should not be consumed or combined.

Methods inherited from interface com.yahoo.bullet.common.Monoidal

combine, consume, getData, getRecords, getResult, merge, reset

Method Detail

isClosed

default boolean isClosed()

Returns false if more data should not be consumed or combined. This method can be used to avoid passing more data into this Strategy. By default, returns false unless overridden.

Specified by:

isClosed in interface Closable

Returns:

A boolean denoting whether the next consumption or combination should not occur.

getMetadata

default Meta getMetadata()

Get the Meta so far. By default, returns an empty one.

Specified by:

getMetadata in interface Monoidal

Returns:

The resulting metadata of the data aggregated so far.