Package net.vleo.timel.iterator

Class CoalesceIterator<V>

java.lang.Object

net.vleo.timel.iterator.BufferedTimeIterator<V>

net.vleo.timel.iterator.CoalesceIterator<V>

All Implemented Interfaces:

TimeIterator<V>

public final class CoalesceIterator<V>
extends BufferedTimeIterator<V>

A time iterator which performs the coalesce between a given set of upscaler iterators in a sequential way.

This iterator will output values with the highest granularity respect its operands, upscaling the inputs when in need of adapting.

Author:

Andrea Leofreddi

Constructor Summary

Constructors

Constructor	Description
CoalesceIterator(Collection<UpscalableIterator<V>> arguments)	Construct a coalesce iterator from the given arguments.
CoalesceIterator(TimeIterator<?> first, UpscalableIterator<?>... others)	Construct a coalesce iterator from the given arguments.
CoalesceIterator(UpscalableIterator<V>... arguments)	Construct a coalesce iterator from the given arguments.

Method Summary

Modifier and Type	Method	Description
protected Sample<V>	concreteNext()	Fetch the next element.
String	toString()

Methods inherited from class net.vleo.timel.iterator.BufferedTimeIterator

hasNext, next, peekNext

Methods inherited from class java.lang.Object

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

Constructor Detail

CoalesceIterator

public CoalesceIterator(TimeIterator<?> first,
                        UpscalableIterator<?>... others)

Construct a coalesce iterator from the given arguments.

Parameters:

first - First source iterator, which is not required to be upscalable

others - Rest source iterators

CoalesceIterator

public CoalesceIterator(Collection<UpscalableIterator<V>> arguments)

Construct a coalesce iterator from the given arguments.

Parameters:

arguments - Source iterators

CoalesceIterator

public CoalesceIterator(UpscalableIterator<V>... arguments)

Construct a coalesce iterator from the given arguments.

Parameters:

arguments - Source iterators

Method Detail

concreteNext

protected Sample<V> concreteNext()

Description copied from class: BufferedTimeIterator

Fetch the next element.

This method must return null when reaching the end of the stream.

Specified by:

concreteNext in class BufferedTimeIterator<V>

Returns:

Next sample, or null if at the end of the stream

toString

public final String toString()

Overrides:

toString in class Object