hu.akarnokd.reactive4java.reactive

Class Aggregate.SeededIndexedProjected<V,T,U>

java.lang.Object

hu.akarnokd.reactive4java.reactive.Aggregate.SeededIndexedProjected<V,T,U>

Type Parameters:

T - the type of the values

U - the type of the intermediate sum value

V - the type of the final average value

All Implemented Interfaces:

Observable<V>

Enclosing class:

Aggregate

public static final class Aggregate.SeededIndexedProjected<V,T,U>
extends java.lang.Object
implements Observable<V>

Computes an aggregated value of the source Ts by applying a sum function and applying the divide function when the source finishes, sending the result to the output.

Constructor Summary

Constructors

Constructor and Description
SeededIndexedProjected(Observable<? extends T> source, U seed, Func2<? super U,? super T,? extends U> accumulator, Func2<? super U,? super java.lang.Integer,? extends V> divide)

Method Summary

Modifier and Type	Method and Description
java.io.Closeable	register(Observer<? super V> observer) Registers an observer for the notification of Ts.

Methods inherited from class java.lang.Object

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

Constructor Detail

SeededIndexedProjected

public SeededIndexedProjected(Observable<? extends T> source,
                              U seed,
                              Func2<? super U,? super T,? extends U> accumulator,
                              Func2<? super U,? super java.lang.Integer,? extends V> divide)

Parameters:

source - the source of BigDecimals to aggregate.

seed - the initieal value for the aggregation

accumulator - the function which accumulates the input Ts. The first received T will be accompanied by a null U.

divide - the function which perform the final division based on the number of elements

Method Detail

register

@Nonnull
public java.io.Closeable register(@Nonnull
                                            Observer<? super V> observer)

Description copied from interface: Observable

Registers an observer for the notification of Ts.

Specified by:

register in interface Observable<V>

Parameters:

observer - the observer of Ts or any supertype of it

Returns:

the way of deregister the observer from this provider