org.apache.mahout.cf.taste.impl.common

Class LongPrimitiveArrayIterator

java.lang.Object

org.apache.mahout.cf.taste.impl.common.LongPrimitiveArrayIterator

All Implemented Interfaces:

Iterator<Long>, LongPrimitiveIterator, SkippingIterator<Long>

public final class LongPrimitiveArrayIterator
extends Object
implements LongPrimitiveIterator

While long[] is an Iterable, it is not an Iterable<Long>. This adapter class addresses that.

Constructor Summary

Constructors

Constructor and Description
LongPrimitiveArrayIterator(long[] array) Creates an LongPrimitiveArrayIterator over an entire array.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasNext()
Long	next()
long	nextLong()
long	peek()
void	remove()
void	skip(int n) Skip the next n elements supplied by this Iterator.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

LongPrimitiveArrayIterator

public LongPrimitiveArrayIterator(long[] array)

Creates an LongPrimitiveArrayIterator over an entire array.

Parameters:

array - array to iterate over

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<Long>

next

public Long next()

Specified by:

next in interface Iterator<Long>

nextLong

public long nextLong()

Specified by:

nextLong in interface LongPrimitiveIterator

Returns:

next long in iteration

peek

public long peek()

Specified by:

peek in interface LongPrimitiveIterator

Returns:

next long in iteration without advancing iteration

remove

public void remove()

Specified by:

remove in interface Iterator<Long>

Throws:

UnsupportedOperationException

skip

public void skip(int n)

Description copied from interface: SkippingIterator

Skip the next n elements supplied by this Iterator. If there are less than n elements remaining, this skips all remaining elements in the Iterator. This method has the same effect as calling Iterator.next() n times, except that it will never throw NoSuchElementException.

Specified by:

skip in interface SkippingIterator<Long>

toString

public String toString()

Overrides:

toString in class Object