org.conqat.lib.commons.collections

Class IdentityHashSet<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

org.conqat.lib.commons.collections.MapBackedSetBase<E>

org.conqat.lib.commons.collections.IdentityHashSet<E>

All Implemented Interfaces:

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

public class IdentityHashSet<E>
extends MapBackedSetBase<E>

This class implements a set based on referential equality similar to JDK class IdentityHashMap. This class can be e.g. used to implement listener lists that should not rely on the listeners equals()-methods.

The implementation is based on class HashSet that also uses an underlying hash map.

Constructor Summary

Constructors

Constructor and Description
IdentityHashSet()
IdentityHashSet(java.util.Collection<? extends E> collection) Create new identity hash set from an existing collection.
IdentityHashSet(int expectedMaxSize) Create new identity hash set with an expected maximum size.

Method Summary

Modifier and Type	Method and Description
IdentityHashSet<E>	clone() Returns a shallow copy of this IdentityHashSet instance: the elements themselves are not cloned.

Methods inherited from class org.conqat.lib.commons.collections.MapBackedSetBase

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

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

addAll, containsAll, retainAll, spliterator, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

IdentityHashSet

public IdentityHashSet()

IdentityHashSet

public IdentityHashSet(java.util.Collection<? extends E> collection)

Create new identity hash set from an existing collection.

IdentityHashSet

public IdentityHashSet(int expectedMaxSize)

Create new identity hash set with an expected maximum size.

Method Detail

clone

public IdentityHashSet<E> clone()

Returns a shallow copy of this IdentityHashSet instance: the elements themselves are not cloned.

Overrides:

clone in class java.lang.Object

Returns:

a shallow copy of this set.