cascading.util
Class SingleValueIterator<Value>

java.lang.Object
  cascading.util.SingleValueIterator<Value>

All Implemented Interfaces:

Iterator<Value>

Direct Known Subclasses:

ForeverValueIterator, SingleValueCloseableIterator

public class SingleValueIterator<Value>
extends Object
implements Iterator<Value>

Class SingleValueIterator is a convenience to creating an Iterator that returns one value for use with interfaces that only accept Iterator instances.

If given a null value, it will be assumed this Iterator instance has no value, and hasNext() will return false.

Field Summary

static SingleValueIterator	EMPTY
protected Value	value

Constructor Summary

SingleValueIterator()

SingleValueIterator(Value value)

Method Summary

boolean	hasNext()
Value	next()
void	remove()
void	reset(Value value)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY

public static final SingleValueIterator EMPTY

value

protected Value value

Constructor Detail

SingleValueIterator

public SingleValueIterator()

SingleValueIterator

public SingleValueIterator(Value value)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<Value>

next

public Value next()

Specified by:

next in interface Iterator<Value>

remove

public void remove()

Specified by:

remove in interface Iterator<Value>

reset

public void reset(Value value)