org.eclipse.hyades.models.util.internal
Class IdentityHashSet

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractSet
          org.eclipse.hyades.models.util.internal.IdentityHashSet

All Implemented Interfaces:

java.lang.Cloneable, java.lang.Iterable, java.util.Collection, java.util.Set

public class IdentityHashSet
extends java.util.AbstractSet
implements java.util.Set, java.lang.Cloneable

Field Summary

protected java.util.IdentityHashMap	map
protected static java.lang.Object	PRESENT

Constructor Summary

IdentityHashSet()

Method Summary

boolean	add(java.lang.Object o) Adds the specified element to this set if it is not already present.
void	clear() Removes all of the elements from this set.
java.lang.Object	clone() Returns a shallow copy of this HashSet instance: the elements themselves are not cloned.
boolean	contains(java.lang.Object o) Returns true if this set contains the specified element.
boolean	isEmpty() Returns true if this set contains no elements.
java.util.Iterator	iterator() Returns an iterator over the elements in this set.
boolean	remove(java.lang.Object o) Removes the specified element from this set if it is present.
int	size() Returns the number of elements in this set (its cardinality).

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, equals, hashCode, removeAll, retainAll, toArray, toArray

Field Detail

map

protected transient java.util.IdentityHashMap map

PRESENT

protected static final java.lang.Object PRESENT

Constructor Detail

IdentityHashSet

public IdentityHashSet()

Method Detail

iterator

public java.util.Iterator iterator()

Returns an iterator over the elements in this set. The elements are returned in no particular order.

Specified by:

iterator in interface java.lang.Iterable

Specified by:

iterator in interface java.util.Collection

Specified by:

iterator in interface java.util.Set

Specified by:

iterator in class java.util.AbstractCollection

Returns:

an Iterator over the elements in this set.

See Also:

ConcurrentModificationException

size

public int size()

Returns the number of elements in this set (its cardinality).

Specified by:

size in interface java.util.Collection

Specified by:

size in interface java.util.Set

Specified by:

size in class java.util.AbstractCollection

Returns:

the number of elements in this set (its cardinality).

isEmpty

public boolean isEmpty()

Returns true if this set contains no elements.

Specified by:

isEmpty in interface java.util.Collection

Specified by:

isEmpty in interface java.util.Set

Overrides:

isEmpty in class java.util.AbstractCollection

Returns:

true if this set contains no elements.

contains

public boolean contains(java.lang.Object o)

Returns true if this set contains the specified element.

Specified by:

contains in interface java.util.Collection

Specified by:

contains in interface java.util.Set

Overrides:

contains in class java.util.AbstractCollection

Parameters:

o - element whose presence in this set is to be tested.

Returns:

true if this set contains the specified element.

add

public boolean add(java.lang.Object o)

Adds the specified element to this set if it is not already present.

Specified by:

add in interface java.util.Collection

Specified by:

add in interface java.util.Set

Overrides:

add in class java.util.AbstractCollection

Parameters:

o - element to be added to this set.

Returns:

true if the set did not already contain the specified element.

remove

public boolean remove(java.lang.Object o)

Removes the specified element from this set if it is present.

Specified by:

remove in interface java.util.Collection

Specified by:

remove in interface java.util.Set

Overrides:

remove in class java.util.AbstractCollection

Parameters:

o - object to be removed from this set, if present.

Returns:

true if the set contained the specified element.

clear

public void clear()

Removes all of the elements from this set.

Specified by:

clear in interface java.util.Collection

Specified by:

clear in interface java.util.Set

Overrides:

clear in class java.util.AbstractCollection

clone

public java.lang.Object clone()

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

Overrides:

clone in class java.lang.Object

Returns:

a shallow copy of this set.