org.apache.druid.collections

Class CombiningIterable<T>

java.lang.Object

org.apache.druid.collections.CombiningIterable<T>

All Implemented Interfaces:

Iterable<T>

public class CombiningIterable<T>
extends Object
implements Iterable<T>

Constructor Summary

Constructors

Constructor and Description
CombiningIterable(Iterable<T> it, Comparator<T> comparator, BinaryOperator<T> fn)

Method Summary

Modifier and Type	Method and Description
static <T> CombiningIterable<T>	create(Iterable<T> it, Comparator<T> comparator, BinaryOperator<T> fn)
static <T> CombiningIterable<T>	createSplatted(Iterable<? extends Iterable<T>> in, Comparator<T> comparator) Creates a CombiningIterable around a MergeIterable such that equivalent elements are thrown away If there are multiple Iterables in parameter "in" with equivalent objects, there are no guarantees around which object will win.
Iterator<T>	iterator()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

CombiningIterable

public CombiningIterable(Iterable<T> it,
                         Comparator<T> comparator,
                         BinaryOperator<T> fn)

Method Detail

createSplatted

public static <T> CombiningIterable<T> createSplatted(Iterable<? extends Iterable<T>> in,
                                                      Comparator<T> comparator)

Creates a CombiningIterable around a MergeIterable such that equivalent elements are thrown away If there are multiple Iterables in parameter "in" with equivalent objects, there are no guarantees around which object will win. You will get *some* object from one of the Iterables, but which Iterable is unknown.

Type Parameters:

T - Type of object

Parameters:

in - An Iterable of Iterables to be merged

comparator - the Comparator to determine sort and equality

Returns:

An Iterable that is the merge of all Iterables from in such that there is only one instance of equivalent objects.

create

public static <T> CombiningIterable<T> create(Iterable<T> it,
                                              Comparator<T> comparator,
                                              BinaryOperator<T> fn)

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>