Package com.oracle.coherence.concurrent.executor

Class AbstractCollector<T,R>

java.lang.Object

com.oracle.coherence.concurrent.executor.AbstractCollector<T,R>

Type Parameters:

T - the type of input elements to the reduction operation

R - the result type of the reduction operation

All Implemented Interfaces:

Task.Collector<T,List<T>,R>, ExternalizableLite, PortableObject, Serializable

Direct Known Subclasses:

TaskCollectors.CountCollector, TaskCollectors.LastOfCollector

public abstract class AbstractCollector<T,R>
extends Object
implements Task.Collector<T,List<T>,R>, PortableObject

An abstract Task.Collector.

Since:

21.12

Author:

bo

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
AbstractCollector()

Method Summary

Modifier and Type	Method	Description
BiConsumer<List<T>,T>	accumulator()	A function that folds Task results into a mutable result container.
Remote.Predicate<List<T>>	finishable()	A Remote.Predicate to determine if a result container can be finished early avoiding further accumulation of results using the container.
Supplier<List<T>>	supplier()	A function that creates and returns a new mutable result container.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.tangosol.io.ExternalizableLite

readExternal, writeExternal

Methods inherited from interface com.tangosol.io.pof.PortableObject

readExternal, writeExternal

Methods inherited from interface com.oracle.coherence.concurrent.executor.Task.Collector

finisher

Constructor Detail

AbstractCollector

public AbstractCollector()

Method Detail

accumulator

public BiConsumer<List<T>,T> accumulator()

Description copied from interface: Task.Collector

A function that folds Task results into a mutable result container.

Specified by:

accumulator in interface Task.Collector<T,List<T>,R>

Returns:

a function that folds Task results into a mutable result container

finishable

public Remote.Predicate<List<T>> finishable()

Description copied from interface: Task.Collector

A Remote.Predicate to determine if a result container can be finished early avoiding further accumulation of results using the container.

Should there be no further results to accumulate, finishing the result container with the Task.Collector.finisher() will occur regardless of the result returned by the Remote.Predicate.

Specified by:

finishable in interface Task.Collector<T,List<T>,R>

Returns:

a Remote.Predicate

supplier

public Supplier<List<T>> supplier()

Description copied from interface: Task.Collector

A function that creates and returns a new mutable result container.

Specified by:

supplier in interface Task.Collector<T,List<T>,R>

Returns:

a function which returns a new mutable result container