org.apache.ignite.internal.util

Class GridConcurrentWeakHashSet<E>

java.lang.Object

org.apache.ignite.internal.util.GridConcurrentWeakHashSet<E>

All Implemented Interfaces:

Iterable<E>, Collection<E>, Set<E>

public class GridConcurrentWeakHashSet<E>
extends Object
implements Set<E>

Concurrent weak hash set implementation.

Constructor Summary

Constructors

Constructor and Description
GridConcurrentWeakHashSet() Creates a new, empty set with a default initial capacity, load factor, and concurrencyLevel.
GridConcurrentWeakHashSet(Collection<E> c) Constructs a new set containing the elements in the specified collection, with default load factor and an initial capacity sufficient to contain the elements in the specified collection.
GridConcurrentWeakHashSet(int initCap) Creates a new, empty set with the specified initial capacity, and with default load factor and concurrencyLevel.
GridConcurrentWeakHashSet(int initCap, float loadFactor, int conLevel) Creates a new, empty set with the specified initial capacity, load factor, and concurrency level.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(E e)
boolean	addAll(Collection<? extends E> c)
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
boolean	equals(Object o)
int	hashCode()
boolean	isEmpty()
Iterator<E>	iterator()
protected void	onGc(E e) This method is called on every element when it gets GC-ed.
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	retainAll(Collection<?> c)
int	size()
Object[]	toArray()
<T> T[]	toArray(T[] a)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

GridConcurrentWeakHashSet

public GridConcurrentWeakHashSet()

Creates a new, empty set with a default initial capacity, load factor, and concurrencyLevel.

GridConcurrentWeakHashSet

public GridConcurrentWeakHashSet(int initCap)

Creates a new, empty set with the specified initial capacity, and with default load factor and concurrencyLevel.

Parameters:

initCap - The initial capacity. The implementation performs internal sizing to accommodate this many elements.

Throws:

IllegalArgumentException - if the initial capacity of elements is negative.

GridConcurrentWeakHashSet

public GridConcurrentWeakHashSet(int initCap,
                         float loadFactor,
                         int conLevel)

Creates a new, empty set with the specified initial capacity, load factor, and concurrency level.

Parameters:

initCap - The initial capacity. The implementation performs internal sizing to accommodate this many elements.

loadFactor - The load factor threshold, used to control resizing. Resizing may be performed when the average number of elements per bin exceeds this threshold.

conLevel - The estimated number of concurrently updating threads. The implementation performs internal sizing to try to accommodate this many threads.

Throws:

IllegalArgumentException - if the initial capacity is negative or the load factor or concurrency level are non-positive.

GridConcurrentWeakHashSet

public GridConcurrentWeakHashSet(Collection<E> c)

Constructs a new set containing the elements in the specified collection, with default load factor and an initial capacity sufficient to contain the elements in the specified collection.

Parameters:

c - Collection to add.

Method Detail

add

public boolean add(E e)

Specified by:

add in interface Collection<E>

Specified by:

add in interface Set<E>

addAll

public boolean addAll(@Nullable
             Collection<? extends E> c)

Specified by:

addAll in interface Collection<E>

Specified by:

addAll in interface Set<E>

retainAll

public boolean retainAll(@Nullable
                Collection<?> c)

Specified by:

retainAll in interface Collection<E>

Specified by:

retainAll in interface Set<E>

size

public int size()

Specified by:

size in interface Collection<E>

Specified by:

size in interface Set<E>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<E>

Specified by:

isEmpty in interface Set<E>

contains

public boolean contains(@Nullable
               Object o)

Specified by:

contains in interface Collection<E>

Specified by:

contains in interface Set<E>

containsAll

public boolean containsAll(@Nullable
                  Collection<?> c)

Specified by:

containsAll in interface Collection<E>

Specified by:

containsAll in interface Set<E>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<E>

Specified by:

toArray in interface Set<E>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface Collection<E>

Specified by:

toArray in interface Set<E>

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in interface Set<E>

clear

public void clear()

Specified by:

clear in interface Collection<E>

Specified by:

clear in interface Set<E>

remove

public boolean remove(@Nullable
             Object o)

Specified by:

remove in interface Collection<E>

Specified by:

remove in interface Set<E>

removeAll

public boolean removeAll(@Nullable
                Collection<?> c)

Specified by:

removeAll in interface Collection<E>

Specified by:

removeAll in interface Set<E>

equals

public boolean equals(@Nullable
             Object o)

Specified by:

equals in interface Collection<E>

Specified by:

equals in interface Set<E>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<E>

Specified by:

hashCode in interface Set<E>

Overrides:

hashCode in class Object

onGc

protected void onGc(E e)

This method is called on every element when it gets GC-ed.

Parameters:

e - Element that is about to get GC-ed.

toString

public String toString()

Overrides:

toString in class Object