org.apache.flink.runtime.util

Class ReusingMutableToRegularIteratorWrapper<T>

java.lang.Object

org.apache.flink.runtime.util.ReusingMutableToRegularIteratorWrapper<T>

All Implemented Interfaces:

Iterable<T>, Iterator<T>

public class ReusingMutableToRegularIteratorWrapper<T>
extends Object
implements Iterator<T>, Iterable<T>

This class wraps a MutableObjectIterator into a regular Iterator. Internally, it uses two record instances which it uses alternating. That way, whenever hasNext() returns (possibly with false), the previous obtained record is still valid and cannot have been overwritten internally.

Constructor Summary

Constructors

Constructor and Description
ReusingMutableToRegularIteratorWrapper(MutableObjectIterator<T> source, TypeSerializer<T> serializer)

Method Summary

Modifier and Type	Method and Description
boolean	hasNext()
Iterator<T>	iterator()
T	next()
void	remove()

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

ReusingMutableToRegularIteratorWrapper

public ReusingMutableToRegularIteratorWrapper(MutableObjectIterator<T> source,
                                              TypeSerializer<T> serializer)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T>

next

public T next()

Specified by:

next in interface Iterator<T>

remove

public void remove()

Specified by:

remove in interface Iterator<T>

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>