org.apache.flink.runtime.util

Class UnmodifiableIterator<T>

java.lang.Object

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

Type Parameters:

T - the type of the encapsulated iterator

All Implemented Interfaces:

Iterator<T>

public final class UnmodifiableIterator<T>
extends Object
implements Iterator<T>

An auxiliary implementation of an iterator which protects the underlying collection from being modified. As a result, calling the remove method on this iterator will result in an UnsupportedOperationException.

This class is thread-safe.

Constructor Summary

Constructors

Constructor and Description
UnmodifiableIterator(Iterator<T> encapsulatedIterator) Constructs a new unmodifiable iterator.

Method Summary

Modifier and Type	Method and Description
boolean	hasNext()
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

Constructor Detail

UnmodifiableIterator

public UnmodifiableIterator(Iterator<T> encapsulatedIterator)

Constructs a new unmodifiable iterator.

Parameters:

encapsulatedIterator - the encapsulated iterator

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>