Package com.oracle.coherence.concurrent.executor

Class TaskCollectors.FirstOfCollector<T>

java.lang.Object

com.oracle.coherence.concurrent.executor.TaskCollectors.FirstOfCollector<T>

Type Parameters:

T - the type of result

All Implemented Interfaces:

Task.Collector<T,AtomicReference<T>,T>, ExternalizableLite, PortableObject, Serializable

Enclosing class:

TaskCollectors

public static class TaskCollectors.FirstOfCollector<T>
extends Object
implements Task.Collector<T,AtomicReference<T>,T>, PortableObject

A Task.Collector to collect any (the first provided) available result.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
FirstOfCollector()

Method Summary

Modifier and Type	Method	Description
BiConsumer<AtomicReference<T>,T>	accumulator()	A function that folds Task results into a mutable result container.
Remote.Predicate<AtomicReference<T>>	finishable()	A Remote.Predicate to determine if a result container can be finished early avoiding further accumulation of results using the container.
Function<AtomicReference<T>,T>	finisher()	Perform the final transformation from the intermediate accumulation type A to the final result type R.
void	readExternal(PofReader in)	Restore the contents of a user type instance by reading its state using the specified PofReader object.
Supplier<AtomicReference<T>>	supplier()	A function that creates and returns a new mutable result container.
void	writeExternal(PofWriter out)	Save the contents of a POF user type instance by writing its state using the specified PofWriter object.

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

Constructor Details

FirstOfCollector

public FirstOfCollector()

Method Details

accumulator

public BiConsumer<AtomicReference<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,AtomicReference<T>,T>

Returns:

a function that folds Task results into a mutable result container

finisher

public Function<AtomicReference<T>,T> finisher()

Description copied from interface: Task.Collector

Perform the final transformation from the intermediate accumulation type A to the final result type R.

Specified by:

finisher in interface Task.Collector<T,AtomicReference<T>,T>

Returns:

a function which transforms the intermediate result to the final result

finishable

public Remote.Predicate<AtomicReference<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,AtomicReference<T>,T>

Returns:

a Remote.Predicate

supplier

public Supplier<AtomicReference<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,AtomicReference<T>,T>

Returns:

a function which returns a new mutable result container

readExternal

public void readExternal(PofReader in)
                  throws IOException

Description copied from interface: PortableObject

Restore the contents of a user type instance by reading its state using the specified PofReader object.

Specified by:

readExternal in interface PortableObject

Parameters:

in - the PofReader from which to read the object's state

Throws:

IOException - if an I/O error occurs

writeExternal

public void writeExternal(PofWriter out)
                   throws IOException

Description copied from interface: PortableObject

Save the contents of a POF user type instance by writing its state using the specified PofWriter object.

Specified by:

writeExternal in interface PortableObject

Parameters:

out - the PofWriter to which to write the object's state

Throws:

IOException - if an I/O error occurs