com.mattunderscore.iterators

Class PrefetchingIterator<E>

java.lang.Object

com.mattunderscore.iterators.PrefetchingIterator<E>

All Implemented Interfaces:

Iterator<E>

Direct Known Subclasses:

FilteringIterator, RemoveHandlerIterator

@NotThreadSafe
public abstract class PrefetchingIterator<E>
extends Object
implements Iterator<E>

Abstract iterator implementation. Iterator that may prefetch the element to return next on hasNext.

Author:

Matt Champion on 25/06/14.

Constructor Summary

Constructors

Constructor and Description
PrefetchingIterator()

Method Summary

Modifier and Type	Method and Description
protected abstract E	calculateNext()
boolean	hasNext()
protected boolean	isRemoveSupported()
E	next()
void	remove()
protected void	remove(E current) Perform the removal

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

PrefetchingIterator

public PrefetchingIterator()

Method Detail

hasNext

public final boolean hasNext()

Specified by:

hasNext in interface Iterator<E>

next

public final E next()

Specified by:

next in interface Iterator<E>

remove

public final void remove()

Specified by:

remove in interface Iterator<E>

calculateNext

protected abstract E calculateNext()
                            throws NoSuchElementException

Returns:

The next element to return when asked

Throws:

NoSuchElementException - If no more elements

isRemoveSupported

protected boolean isRemoveSupported()

Returns:

true if removal is supported

remove

protected void remove(E current)

Perform the removal

Parameters:

current - The current item to remove