de.unknownreality.dataframe.common

Class MultiIterator<T>

java.lang.Object

de.unknownreality.dataframe.common.MultiIterator<T>

All Implemented Interfaces:

Iterable<T[]>, Iterator<T[]>

public class MultiIterator<T>
extends Object
implements Iterator<T[]>, Iterable<T[]>

Created by Alex on 10.03.2016.

Constructor Summary

Constructors

Constructor and Description
MultiIterator(Iterable<T>[] iterables, Class<T> cl)

Method Summary

Modifier and Type	Method and Description
static <T> MultiIterator<T>	create(Collection<? super Iterable<T>> its, Class<T> cl)
static <T> MultiIterator<T>	create(Iterable<T>[] its, Class<T> cl) Creates a multi iterator from an array of iterators
boolean	hasNext() Returns true if next entities array exists.
Iterator<T[]>	iterator() Returns self to be used in foreach loops
T[]	next() Returns the next entities array.
void	remove() Remove is not supported

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

MultiIterator

public MultiIterator(Iterable<T>[] iterables,
                     Class<T> cl)

Method Detail

create

public static <T> MultiIterator<T> create(Iterable<T>[] its,
                                          Class<T> cl)

Creates a multi iterator from an array of iterators

Type Parameters:

T - type of entities in iterators

Parameters:

its - array of iterators

cl - class of entities in iterators

Returns:

multi iterator

create

public static <T> MultiIterator<T> create(Collection<? super Iterable<T>> its,
                                          Class<T> cl)

remove

public void remove()

Remove is not supported

Specified by:

remove in interface Iterator<T[]>

hasNext

public boolean hasNext()

Returns true if next entities array exists. There is no next entities array if at least one iterator has no next element

Specified by:

hasNext in interface Iterator<T[]>

Returns:

true if next entities array exists

next

public T[] next()

Returns the next entities array. Each entity iterator provides exactly one entry in this array

Specified by:

next in interface Iterator<T[]>

Returns:

array of entities

iterator

public Iterator<T[]> iterator()

Returns self to be used in foreach loops

Specified by:

iterator in interface Iterable<T[]>

Returns:

self