com.hazelcast.jet.accumulator

Class PickAnyAccumulator<T>

java.lang.Object

com.hazelcast.jet.accumulator.PickAnyAccumulator<T>

Type Parameters:

T -

public class PickAnyAccumulator<T>
extends Object

Keeps the state needed to implement the AggregateOperations.pickAny() aggregate operation. It maintains the count of accumulated items so that it can properly set its value to null when all the items are deducted.

Since:

Jet 4.5

Constructor Summary

Constructors

Constructor and Description
PickAnyAccumulator() Constructs an empty pickAny accumulator.
PickAnyAccumulator(T value, long count) Constructs a pickAny accumulator with the full state passed in the parameters.

Method Summary

Modifier and Type	Method and Description
void	accumulate(T t) Accumulates an item.
void	combine(PickAnyAccumulator<T> other) Combines another accumulator with this one.
long	count() Returns the count of accumulated objects.
void	deduct(PickAnyAccumulator<T> other) Deducts another accumulator from this one.
boolean	equals(Object o)
T	get() Returns the picked object.
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PickAnyAccumulator

public PickAnyAccumulator()

Constructs an empty pickAny accumulator.

PickAnyAccumulator

public PickAnyAccumulator(T value,
                          long count)

Constructs a pickAny accumulator with the full state passed in the parameters.

Parameters:

value - the picked object

count - the count of accumulated objects

Method Detail

accumulate

public void accumulate(@Nullable
                       T t)

Accumulates an item.

combine

public void combine(@Nonnull
                    PickAnyAccumulator<T> other)

Combines another accumulator with this one.

deduct

public void deduct(@Nonnull
                   PickAnyAccumulator<T> other)

Deducts another accumulator from this one.

get

public T get()

Returns the picked object.

count

public long count()

Returns the count of accumulated objects.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object