org.roaringbitmap.buffer

Class BufferReverseIntIteratorFlyweight

java.lang.Object

org.roaringbitmap.buffer.BufferReverseIntIteratorFlyweight

All Implemented Interfaces:

Cloneable, IntIterator

public class BufferReverseIntIteratorFlyweight
extends Object
implements IntIterator

Fast iterator minimizing the stress on the garbage collector. You can create one reusable instance of this class and then wrap(ImmutableRoaringBitmap) This iterator enumerates the stored values in reverse (starting from the end).

Author:

Borislav Ivanov

Constructor Summary

Constructors

Constructor and Description
BufferReverseIntIteratorFlyweight() Creates an instance that is not ready for iteration.
BufferReverseIntIteratorFlyweight(ImmutableRoaringBitmap r) Creates an instance that is ready for iteration.

Method Summary

Modifier and Type	Method and Description
IntIterator	clone() Creates a copy of the iterator.
boolean	hasNext()
int	next()
void	wrap(ImmutableRoaringBitmap r) Prepares a bitmap for iteration

Methods inherited from class java.lang.Object

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

Constructor Detail

BufferReverseIntIteratorFlyweight

public BufferReverseIntIteratorFlyweight()

Creates an instance that is not ready for iteration. You must first call wrap(ImmutableRoaringBitmap).

BufferReverseIntIteratorFlyweight

public BufferReverseIntIteratorFlyweight(ImmutableRoaringBitmap r)

Creates an instance that is ready for iteration.

Parameters:

r - bitmap to be iterated over

Method Detail

wrap

public void wrap(ImmutableRoaringBitmap r)

Prepares a bitmap for iteration

Parameters:

r - bitmap to be iterated over

hasNext

public boolean hasNext()

Specified by:

hasNext in interface IntIterator

Returns:

whether there is another value

next

public int next()

Specified by:

next in interface IntIterator

Returns:

next integer value

clone

public IntIterator clone()

Description copied from interface: IntIterator

Creates a copy of the iterator.

Specified by:

clone in interface IntIterator

Overrides:

clone in class Object

Returns:

a clone of the current iterator