Class ParallelAggregators

java.lang.Object

org.aksw.commons.collector.core.ParallelAggregators

public class ParallelAggregators
extends Object

Constructor Summary

Constructors

Constructor	Description
ParallelAggregators()

Method Summary

Modifier and Type	Method	Description
static <T, E, V, C extends Collection<V>> Accumulator<T,E,C>	combineAccumulators(Accumulator<T,E,C> needle, Accumulator<T,E,C> haystack, UnaryOperator<Accumulator<T,E,C>> accumulatorCloner, Function<? super V, ? extends T> valueToItem, E env)	Merge two accumulators.
static <I, E, O, ACC extends Accumulator<I,E,O>> Collector<I,?,O>	createCollector(ParallelAggregator<I,E,O,ACC> agg, E env)	Create a serializable java8 collector from a parallel aggregator.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ParallelAggregators

public ParallelAggregators()

Method Details

combineAccumulators

public static <T, E, V, C extends Collection<V>>
Accumulator<T,E,C> combineAccumulators(Accumulator<T,E,C> needle,
 Accumulator<T,E,C> haystack,
 UnaryOperator<Accumulator<T,E,C>> accumulatorCloner,
 Function<? super V, ? extends T> valueToItem,
 E env)

Merge two accumulators.

Type Parameters:

T -

C -

Parameters:

needle -

haystack -

accumulatorCloner - The cloner; may return its argument for in place changes.

Returns:

createCollector

public static <I, E, O, ACC extends Accumulator<I,E,O>>
Collector<I,?,O> createCollector(ParallelAggregator<I,E,O,ACC> agg,
 E env)

Create a serializable java8 collector from a parallel aggregator.