org.apache.hudi.client.utils

Class MergingIterator<T1,T2,R>

java.lang.Object

org.apache.hudi.client.utils.MergingIterator<T1,T2,R>

Type Parameters:

T1 - type returned by the first iterator

T2 - type returned by the second iterator

R - type returned by this iterator

All Implemented Interfaces:

Iterator<R>

Direct Known Subclasses:

ClosableMergingIterator

public class MergingIterator<T1,T2,R>
extends Object
implements Iterator<R>

Iterator providing for the semantic of simultaneously iterating over 2 other iterators and combining their respective output

Field Summary

Fields

Modifier and Type	Field and Description
protected Iterator<T1>	leftIterator
protected Iterator<T2>	rightIterator

Constructor Summary

Constructors

Constructor and Description
MergingIterator(Iterator<T1> leftIterator, Iterator<T2> rightIterator, BiFunction<T1,T2,R> mergeFunction)

Method Summary

Modifier and Type	Method and Description
boolean	hasNext()
R	next()

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, remove

Field Detail

leftIterator

protected final Iterator<T1> leftIterator

rightIterator

protected final Iterator<T2> rightIterator

Constructor Detail

MergingIterator

public MergingIterator(Iterator<T1> leftIterator,
                       Iterator<T2> rightIterator,
                       BiFunction<T1,T2,R> mergeFunction)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<R>

next

public R next()

Specified by:

next in interface Iterator<R>