oracle.toplink.essentials.internal.helper

Class TopLinkIdentityHashSet

java.lang.Object

java.util.AbstractCollection

oracle.toplink.essentials.internal.helper.TopLinkIdentityHashSet

All Implemented Interfaces:

Serializable, Cloneable, Iterable, Collection, Set

public class TopLinkIdentityHashSet
extends AbstractCollection
implements Set, Cloneable, Serializable

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	count
protected oracle.toplink.essentials.internal.helper.TopLinkIdentityHashSet.Entry[]	entries
protected float	loadFactor
protected int	threshold

Constructor Summary

Constructors

Constructor and Description
TopLinkIdentityHashSet() Constructs a new TopLinkIdentityHashSet with a default initial capacity of 32 and a loadfactor of 0.75.
TopLinkIdentityHashSet(Collection c) Constructs a new TopLinkIdentityHashSet with the same contents as the given Collection.
TopLinkIdentityHashSet(int initialCapacity) Constructs a new TopLinkIdentityHashSet with the given initial capacity and a default loadFactor of 0.75.
TopLinkIdentityHashSet(int initialCapacity, float loadFactor) Constructs a new TopLinkIdentityHashSet with the given initial capacity and the given loadFactor.

Method Summary

Modifier and Type	Method and Description
boolean	add(Object obj) Adds the given object to this TopLinkIdentityHashSet.
void	clear() Removes all of the objects from this TopLinkIdentityHashSet.
Object	clone() Returns a shallow copy of this TopLinkIdentityHashSet (the elements are not cloned).
boolean	contains(Object obj) Returns true if this TopLinkIdentityHashSet contains the given object.
boolean	isEmpty()
Iterator	iterator() Get an iterator for this TopLinkIdentityHashSet
boolean	remove(Object obj) Removes the given object from this TopLinkIdentityHashSet, if present.
boolean	removeAll(Collection c) This implementation throws an UnsupportedOperationException because removeAll does not work correctly with reference equality testing.
boolean	retainAll(Collection c) This implementation throws an UnsupportedOperationException.
int	size()

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

addAll, containsAll, equals, hashCode, spliterator, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

entries

protected transient oracle.toplink.essentials.internal.helper.TopLinkIdentityHashSet.Entry[] entries

count

protected transient int count

threshold

protected int threshold

loadFactor

protected float loadFactor

Constructor Detail

TopLinkIdentityHashSet

public TopLinkIdentityHashSet(int initialCapacity,
                              float loadFactor)

Constructs a new TopLinkIdentityHashSet with the given initial capacity and the given loadFactor.

Parameters:

initialCapacity - the initial capacity of the TopLinkIdentityHashSet.

loadFactor - the loadFactor of the TopLinkIdentityHashSet.

Throws:

IllegalArgumentException - if the initial capacity is less than zero, or if the loadFactor is nonpositive.

TopLinkIdentityHashSet

public TopLinkIdentityHashSet(int initialCapacity)

Constructs a new TopLinkIdentityHashSet with the given initial capacity and a default loadFactor of 0.75.

Parameters:

initialCapacity - the initial capacity of the TopLinkIdentityHashSet.

Throws:

IllegalArgumentException - if the initial capacity is less than zero.

TopLinkIdentityHashSet

public TopLinkIdentityHashSet()

Constructs a new TopLinkIdentityHashSet with a default initial capacity of 32 and a loadfactor of 0.75.

TopLinkIdentityHashSet

public TopLinkIdentityHashSet(Collection c)

Constructs a new TopLinkIdentityHashSet with the same contents as the given Collection. The new TopLinkIdentityHashSet is created with an initial capacity sufficient to hold the elements of the given Collection.

Parameters:

c - the Collection whose contents are to be placed in the new TopLinkIdentityHashSet.

Method Detail

size

public int size()

Specified by:

size in interface Collection

Specified by:

size in interface Set

Specified by:

size in class AbstractCollection

Returns:

the size of this TopLinkIdentityHashSet.

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection

Specified by:

isEmpty in interface Set

Overrides:

isEmpty in class AbstractCollection

Returns:

true if this TopLinkIdentityHashSet is empty.

contains

public boolean contains(Object obj)

Returns true if this TopLinkIdentityHashSet contains the given object.

Specified by:

contains in interface Collection

Specified by:

contains in interface Set

Overrides:

contains in class AbstractCollection

Parameters:

obj - the object to find.

Returns:

true if this TopLinkIdentityHashSet contains obj by reference.

add

public boolean add(Object obj)

Adds the given object to this TopLinkIdentityHashSet.

Specified by:

add in interface Collection

Specified by:

add in interface Set

Overrides:

add in class AbstractCollection

Parameters:

obj - object to add.

Returns:

true if this TopLinkIdentityHashSet did not already contain obj.

Throws:

NullPointerException - if obj is null.

remove

public boolean remove(Object obj)

Removes the given object from this TopLinkIdentityHashSet, if present.

Specified by:

remove in interface Collection

Specified by:

remove in interface Set

Overrides:

remove in class AbstractCollection

Parameters:

obj - the object to be removed from this TopLinkIdentityHashSet.

Returns:

true if this TopLinkIdentityHashSet contained obj.

removeAll

public boolean removeAll(Collection c)

This implementation throws an UnsupportedOperationException because removeAll does not work correctly with reference equality testing.

Specified by:

removeAll in interface Collection

Specified by:

removeAll in interface Set

Overrides:

removeAll in class AbstractCollection

retainAll

public boolean retainAll(Collection c)

This implementation throws an UnsupportedOperationException. The Javadocs for AbstractCollection indicates that retainAll is an optional method.

Specified by:

retainAll in interface Collection

Specified by:

retainAll in interface Set

Overrides:

retainAll in class AbstractCollection

clear

public void clear()

Removes all of the objects from this TopLinkIdentityHashSet.

Specified by:

clear in interface Collection

Specified by:

clear in interface Set

Overrides:

clear in class AbstractCollection

clone

public Object clone()

Returns a shallow copy of this TopLinkIdentityHashSet (the elements are not cloned).

Overrides:

clone in class Object

Returns:

a shallow copy of this TopLinkIdentityHashSet.

iterator

public Iterator iterator()

Get an iterator for this TopLinkIdentityHashSet

Specified by:

iterator in interface Iterable

Specified by:

iterator in interface Collection

Specified by:

iterator in interface Set

Specified by:

iterator in class AbstractCollection