org.jboss.util.collection

Class ConcurrentReferenceHashSet<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

org.jboss.util.collection.MapDelegateSet<E>

org.jboss.util.collection.ConcurrentReferenceHashSet<E>

Type Parameters:

E - the element type

All Implemented Interfaces:

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

public class ConcurrentReferenceHashSet<E>
extends MapDelegateSet<E>

Set based on top of ConcurrentReferenceHashMap. It's serializable if the elements are serializable.

Author:

Ales Justin

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ConcurrentReferenceHashSet() Creates a new, empty set with a default initial capacity (16), reference types (weak keys, strong values), default load factor (0.75) and concurrencyLevel (16).
ConcurrentReferenceHashSet(ConcurrentReferenceHashMap.ReferenceType type) Creates a new, empty reference set with the specified key and value reference types.
ConcurrentReferenceHashSet(ConcurrentReferenceHashMap.ReferenceType type, EnumSet<ConcurrentReferenceHashMap.Option> options) Creates a new, empty reference set with the specified reference types and behavioral options.
ConcurrentReferenceHashSet(int initialCapacity) Creates a new, empty set with the specified initial capacity, and with default reference types (weak keys, strong values), load factor (0.75) and concurrencyLevel (16).
ConcurrentReferenceHashSet(int initialCapacity, ConcurrentReferenceHashMap.ReferenceType type) Creates a new, empty set with the specified initial capacity, reference type and with default load factor (0.75) and concurrencyLevel (16).
ConcurrentReferenceHashSet(int initialCapacity, float loadFactor) Creates a new, empty set with the specified initial capacity and load factor and with the default reference types (weak keys, strong values), and concurrencyLevel (16).
ConcurrentReferenceHashSet(int initialCapacity, float loadFactor, int concurrencyLevel) Creates a new, empty set with the specified initial capacity, load factor and concurrency level.
ConcurrentReferenceHashSet(Set<? extends E> s) Creates a new set with the same contents as the given set.

Method Summary

Methods inherited from class org.jboss.util.collection.MapDelegateSet

add, clear, contains, isEmpty, iterator, remove, size, toString

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, retainAll, toArray, toArray

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

addAll, containsAll, retainAll, toArray, toArray

Constructor Detail

ConcurrentReferenceHashSet

public ConcurrentReferenceHashSet(int initialCapacity,
                          float loadFactor,
                          int concurrencyLevel)

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

Parameters:

initialCapacity - 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.

concurrencyLevel - 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 concurrencyLevel are nonpositive.

ConcurrentReferenceHashSet

public ConcurrentReferenceHashSet(int initialCapacity,
                          float loadFactor)

Creates a new, empty set with the specified initial capacity and load factor and with the default reference types (weak keys, strong values), and concurrencyLevel (16).

Parameters:

initialCapacity - 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.

Throws:

IllegalArgumentException - if the initial capacity of elements is negative or the load factor is nonpositive

Since:

1.6

ConcurrentReferenceHashSet

public ConcurrentReferenceHashSet(int initialCapacity,
                          ConcurrentReferenceHashMap.ReferenceType type)

Creates a new, empty set with the specified initial capacity, reference type and with default load factor (0.75) and concurrencyLevel (16).

Parameters:

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

type - the reference type to use

Throws:

IllegalArgumentException - if the initial capacity of elements is negative.

ConcurrentReferenceHashSet

public ConcurrentReferenceHashSet(ConcurrentReferenceHashMap.ReferenceType type)

Creates a new, empty reference set with the specified key and value reference types.

Parameters:

type - the reference type to use

Throws:

IllegalArgumentException - if the initial capacity of elements is negative.

ConcurrentReferenceHashSet

public ConcurrentReferenceHashSet(ConcurrentReferenceHashMap.ReferenceType type,
                          EnumSet<ConcurrentReferenceHashMap.Option> options)

Creates a new, empty reference set with the specified reference types and behavioral options.

Parameters:

type - the reference type to use

options - the options

Throws:

IllegalArgumentException - if the initial capacity of elements is negative.

ConcurrentReferenceHashSet

public ConcurrentReferenceHashSet(int initialCapacity)

Creates a new, empty set with the specified initial capacity, and with default reference types (weak keys, strong values), load factor (0.75) and concurrencyLevel (16).

Parameters:

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

Throws:

IllegalArgumentException - if the initial capacity of elements is negative.

ConcurrentReferenceHashSet

public ConcurrentReferenceHashSet()

Creates a new, empty set with a default initial capacity (16), reference types (weak keys, strong values), default load factor (0.75) and concurrencyLevel (16).

ConcurrentReferenceHashSet

public ConcurrentReferenceHashSet(Set<? extends E> s)

Creates a new set with the same contents as the given set.

Parameters:

s - the set