Package org.jctools.maps

Class NonBlockingHashSet<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

org.jctools.maps.NonBlockingHashSet<E>

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable<E>, java.util.Collection<E>, java.util.Set<E>

public class NonBlockingHashSet<E>
extends java.util.AbstractSet<E>
implements java.io.Serializable

A simple wrapper around NonBlockingHashMap making it implement the Set interface. All operations are Non-Blocking and multi-thread safe.

Since:

1.5

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private NonBlockingHashMap<E,java.lang.Object>	_map
private static java.lang.Object	V

Constructor Summary

Constructors

Constructor	Description
NonBlockingHashSet()	Make a new empty NonBlockingHashSet.

Method Summary

Modifier and Type	Method	Description
boolean	add(E o)	Add o to the set.
void	clear()	Empty the set.
boolean	contains(java.lang.Object o)
E	get(E o)
java.util.Iterator<E>	iterator()
boolean	remove(java.lang.Object o)	Remove o from the set.
int	size()	Current count of elements in the set.

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, isEmpty, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

addAll, containsAll, isEmpty, retainAll, spliterator, toArray, toArray

Field Detail

V

private static final java.lang.Object V

_map

private final NonBlockingHashMap<E,java.lang.Object> _map

Constructor Detail

NonBlockingHashSet

public NonBlockingHashSet()

Make a new empty NonBlockingHashSet.

Method Detail

add

public boolean add(E o)

Add o to the set.

Specified by:

add in interface java.util.Collection<E>

Specified by:

add in interface java.util.Set<E>

Overrides:

add in class java.util.AbstractCollection<E>

Returns:

true if o was added to the set, false if o was already in the set.

contains

public boolean contains(java.lang.Object o)

Specified by:

contains in interface java.util.Collection<E>

Specified by:

contains in interface java.util.Set<E>

Overrides:

contains in class java.util.AbstractCollection<E>

Returns:

true if o is in the set.

get

public E get(E o)

Returns:

Returns the match for o if o is in the set.

remove

public boolean remove(java.lang.Object o)

Remove o from the set.

Specified by:

remove in interface java.util.Collection<E>

Specified by:

remove in interface java.util.Set<E>

Overrides:

remove in class java.util.AbstractCollection<E>

Returns:

true if o was removed to the set, false if o was not in the set.

size

public int size()

Current count of elements in the set. Due to concurrent racing updates, the size is only ever approximate. Updates due to the calling thread are immediately visible to calling thread.

Specified by:

size in interface java.util.Collection<E>

Specified by:

size in interface java.util.Set<E>

Specified by:

size in class java.util.AbstractCollection<E>

Returns:

count of elements.

clear

public void clear()

Empty the set.

Specified by:

clear in interface java.util.Collection<E>

Specified by:

clear in interface java.util.Set<E>

Overrides:

clear in class java.util.AbstractCollection<E>

iterator

public java.util.Iterator<E> iterator()

Specified by:

iterator in interface java.util.Collection<E>

Specified by:

iterator in interface java.lang.Iterable<E>

Specified by:

iterator in interface java.util.Set<E>

Specified by:

iterator in class java.util.AbstractCollection<E>