Package net.vleo.timel.iterator

Class UnionIterator

java.lang.Object

net.vleo.timel.iterator.BufferedTimeIterator<Object[]>

net.vleo.timel.iterator.UnionIterator

All Implemented Interfaces:

TimeIterator<Object[]>, UpscalableIterator<Object[]>

public final class UnionIterator
extends BufferedTimeIterator<Object[]>
implements UpscalableIterator<Object[]>

An upscalable time iterator which performs the union between a given set of upscalable iterators.

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
UnionIterator(Collection<UpscalableIterator<?>> arguments)	Construct a intesect iterator from the given arguments.
UnionIterator(UpscalableIterator<?> first, UpscalableIterator<?>... others)	Construct a intersect iterator from the given arguments.

Method Summary

Modifier and Type	Method	Description
protected Sample<Object[]>	concreteNext()	Fetch the next element.
Sample<Object[]>	peekUpscaleNext(Interval interval)	Peek the next value upscaling it for the given interval.
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

Methods inherited from interface net.vleo.timel.iterator.TimeIterator

hasNext, next, peekNext

Constructor Detail

UnionIterator

public UnionIterator(UpscalableIterator<?> first,
                     UpscalableIterator<?>... others)

Construct a intersect iterator from the given arguments.

Parameters:

first - First source iterator

others - Rest source iterators

UnionIterator

public UnionIterator(Collection<UpscalableIterator<?>> arguments)

Construct a intesect iterator from the given arguments.

Parameters:

arguments - Source iterators

Method Detail

concreteNext

protected final Sample<Object[]> 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<Object[]>

Returns:

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

peekUpscaleNext

public final Sample<Object[]> peekUpscaleNext(Interval interval)

Peek the next value upscaling it for the given interval.

Specified by:

peekUpscaleNext in interface UpscalableIterator<Object[]>

Parameters:

interval - The interval to upscale the values with

Returns:

Upscaled next values

toString

public String toString()

Overrides:

toString in class Object