Package net.vleo.timel.iterator

Class IntersectIterator

java.lang.Object

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

net.vleo.timel.iterator.IntersectIterator

All Implemented Interfaces:

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

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

An upscalable time iterator which performs the intersections 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
IntersectIterator(Collection<UpscalableIterator<?>> arguments)	Construct a intesect iterator from the given arguments.
IntersectIterator(UpscalableIterator<?>... iterators)	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)	Retrieve a sample which contains the upscaled value, relative to the given interval, for the next value.
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

IntersectIterator

public IntersectIterator(UpscalableIterator<?>... iterators)

Construct a intersect iterator from the given arguments.

Parameters:

iterators - Source iterators

IntersectIterator

public IntersectIterator(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)

Description copied from interface: UpscalableIterator

Retrieve a sample which contains the upscaled value, relative to the given interval, for the next value. As this operation peeks the next value, the iterator is not moved forward.

Specified by:

peekUpscaleNext in interface UpscalableIterator<Object[]>

Parameters:

interval - The interval to upscaler the value with

Returns:

The upscaled next

toString

public String toString()

Overrides:

toString in class Object