uk.ac.starlink.ttools.task

Interface Aggregator.Aggregation

Enclosing interface:

Aggregator

public static interface Aggregator.Aggregation

Object that can manage aggregation for a given type of input data.

Method Summary

Modifier and Type	Method and Description
Aggregator.Accumulator	createAccumulator() Returns an object which can perform aggregation on a number of typed values.
ValueInfo	getResultInfo() Returns metadata describing the result of the aggregation.

Method Detail

getResultInfo

ValueInfo getResultInfo()

Returns metadata describing the result of the aggregation.

Returns:

output metadata

createAccumulator

Aggregator.Accumulator createAccumulator()

Returns an object which can perform aggregation on a number of typed values.

Returns:

accumulator, not threadsafe