Package io.atlassian.fugue

Class Iterables.Memoizer.Lazy<A>

java.lang.Object

java.lang.ref.Reference<Iterables.Memoizer.Node<A>>

java.lang.ref.WeakReference<Iterables.Memoizer.Node<A>>

io.atlassian.fugue.Iterables.LazyReference<Iterables.Memoizer.Node<A>>

io.atlassian.fugue.Iterables.Memoizer.Lazy<A>

All Implemented Interfaces:

Iterables.Memoizer.Node<A>, Supplier<Iterables.Memoizer.Node<A>>

Enclosing class:

Iterables.Memoizer<A>

static class Iterables.Memoizer.Lazy<A>
extends Iterables.LazyReference<Iterables.Memoizer.Node<A>>
implements Iterables.Memoizer.Node<A>

Lazily computes the next node. Has a value so is not an end.

Nested Class Summary

Nested classes/interfaces inherited from class io.atlassian.fugue.Iterables.LazyReference

Iterables.LazyReference.InitializationException, Iterables.LazyReference.State

Field Summary

Fields

Modifier and Type	Field	Description
private final Iterator<A>	delegate
private final A	value

Constructor Summary

Constructors

Constructor	Description
Lazy(Iterator<A> delegate)

Method Summary

Modifier and Type	Method	Description
protected Iterables.Memoizer.Node<A>	create()	The object factory method, guaranteed to be called once and only once.
boolean	isEnd()
Iterables.Memoizer.Node<A>	next()	Get the next Node.
A	value()

Methods inherited from class io.atlassian.fugue.Iterables.LazyReference

cancel, get, getInterruptibly, isInitialized

Methods inherited from class java.lang.ref.Reference

clear, clone, enqueue, isEnqueued, reachabilityFence, refersTo

Methods inherited from class java.lang.Object

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

Field Details

delegate

private final Iterator<A> delegate

value

private final A value

Constructor Details

Lazy

Lazy(Iterator<A> delegate)

Method Details

create

protected Iterables.Memoizer.Node<A> create()
                                     throws Exception

Description copied from class: Iterables.LazyReference

The object factory method, guaranteed to be called once and only once.

Specified by:

create in class Iterables.LazyReference<Iterables.Memoizer.Node<A>>

Returns:

the object that Iterables.LazyReference.get() and Iterables.LazyReference.getInterruptibly() will return.

Throws:

Exception - if anything goes wrong, rethrown as an InitializationException from Iterables.LazyReference.get() and Iterables.LazyReference.getInterruptibly()

next

public Iterables.Memoizer.Node<A> next()
                                throws NoSuchElementException

Description copied from interface: Iterables.Memoizer.Node

Get the next Node.

Specified by:

next in interface Iterables.Memoizer.Node<A>

Returns:

a new Node

Throws:

NoSuchElementException - if this is terminal

isEnd

public boolean isEnd()

Specified by:

isEnd in interface Iterables.Memoizer.Node<A>

value

public A value()

Specified by:

value in interface Iterables.Memoizer.Node<A>