ix

Class IxSourceQueuedIterator<T,U,R>

java.lang.Object

ix.IxBaseIterator<R>

ix.IxSourceIterator<T,R>

ix.IxSourceQueuedIterator<T,U,R>

Type Parameters:

T - the source value type

U - the queued element types

R - the result value type

All Implemented Interfaces:

java.util.Iterator<R>

public abstract class IxSourceQueuedIterator<T,U,R>
extends IxSourceIterator<T,R>

A base iterator that extends a custom ArrayDeque, references an upstream iterator and manages the state between hasNext() and the next() calls; plus defines the remove() to throw UnsupportedOperationException.

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.lang.Object	NULL

Fields inherited from class ix.IxSourceIterator

it

Fields inherited from class ix.IxBaseIterator

done, hasValue, value

Constructor Summary

Constructors

Constructor and Description
IxSourceQueuedIterator(java.util.Iterator<T> it)

Method Summary

Modifier and Type	Method and Description
protected void	clear()
protected <S> void	foreach(IxConsumer2<? super U,S> action, S state)
protected U	fromObject(java.lang.Object value) Cast the object back to a typed value.
protected boolean	isEmpty()
protected boolean	offer(java.lang.Object value)
protected java.lang.Object	peek()
protected java.lang.Object	poll()
protected java.lang.Object	toObject(U value) Cast the value into an object and turn a null value into a sentinel value.

Methods inherited from class ix.IxBaseIterator

hasNext, moveNext, next, 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

Field Detail

NULL

protected static final java.lang.Object NULL

Constructor Detail

IxSourceQueuedIterator

public IxSourceQueuedIterator(java.util.Iterator<T> it)

Method Detail

toObject

protected final java.lang.Object toObject(U value)

Cast the value into an object and turn a null value into a sentinel value.

Parameters:

value - the value to cast

Returns:

the cast value, not null

See Also:

fromObject(Object)

fromObject

protected final U fromObject(java.lang.Object value)

Cast the object back to a typed value.

Parameters:

value - the value to cast back

Returns:

the typed value, maybe null

offer

protected final boolean offer(java.lang.Object value)

poll

protected final java.lang.Object poll()

peek

protected final java.lang.Object peek()

isEmpty

protected final boolean isEmpty()

clear

protected final void clear()

foreach

protected final <S> void foreach(IxConsumer2<? super U,S> action,
                                 S state)