com.alexkasko.unsafe.offheaplong

Class OffHeapLongIterator

java.lang.Object

com.alexkasko.unsafe.offheaplong.OffHeapLongIterator

All Implemented Interfaces:

OffHeapDisposable, OffHeapDisposableIterator<Long>, Iterator<Long>

 class OffHeapLongIterator
extends Object
implements OffHeapDisposableIterator<Long>

Iterator implementation for unsafe long collections. Underneath collection size will be remembered once on iterator creation.

Note: iterator will create new autoboxed Long object on every next() call, this behaviour is inevitable with iterators in java 6/7.

Author:

alexkasko Date: 7/3/13

Field Summary

Fields

Modifier and Type	Field and Description
private OffHeapLongAddressable	data
private long	index
private long	size

Constructor Summary

Constructors

Constructor and Description
OffHeapLongIterator(OffHeapLongAddressable data) Constructor

Method Summary

Methods

Modifier and Type	Method and Description
void	free() Frees allocated memory, may be called multiple times from any thread
boolean	hasNext()
Long	next()
void	remove() Remove operation is not supported
long	size() Optional method, should return size of the underlying collections, if such size is known on iterator creation or -1 otherwise
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

data

private final OffHeapLongAddressable data

size

private final long size

index

private long index

Constructor Detail

OffHeapLongIterator

OffHeapLongIterator(OffHeapLongAddressable data)

Constructor

Parameters:

data - offheap long collection

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<Long>

next

public Long next()

Specified by:

next in interface Iterator<Long>

remove

public void remove()

Remove operation is not supported

Specified by:

remove in interface Iterator<Long>

Throws:

UnsupportedOperationException

toString

public String toString()

Overrides:

toString in class Object

size

public long size()

Optional method, should return size of the underlying collections, if such size is known on iterator creation or -1 otherwise

Specified by:

size in interface OffHeapDisposableIterator<Long>

Returns:

number of elements in iterator

free

public void free()

Frees allocated memory, may be called multiple times from any thread

Specified by:

free in interface OffHeapDisposable