Modifier and Type	Class and Description
private static class	IdentityHashSet.Entry IdentityHashSet entry.
pack-priv class	IdentityHashSet.IdentityHashSetIterator

Modifier and Type	Field and Description
protected transient int	count
pack-priv static final int	DEFAULT_INITIAL_CAPACITY
pack-priv static final float	DEFAULT_LOAD_FACTOR
private transient IdentityHashSet.Entry[]	entries
protected float	loadFactor
pack-priv static final int	MAXIMUM_CAPACITY
pack-priv static final long	serialVersionUID
protected int	threshold

Constructor Summary

Access	Constructor and Description
public	IdentityHashSet(int the initial capacity of the `IdentityHashSet`. initialCapacity, float the loadFactor of the `IdentityHashSet`. loadFactor) Constructs a new `IdentityHashSet` with the given initial capacity and the given loadFactor.
public	IdentityHashSet(int the initial capacity of the IdentityHashSet. initialCapacity) Constructs a new `IdentityHashSet` with the given initial capacity and a default loadFactor of `0.75`.
public	IdentityHashSet() Constructs a new `IdentityHashSet` with a default initial capacity of `32` and a loadfactor of `0.75`.
public	IdentityHashSet(Collection<E> the `Collection` whose contents are to be placed in the new `IdentityHashSet`. c) Constructs a new `IdentityHashSet` with the same contents as the given `Collection`.

Method Summary

Modifier and Type	Method and Description
public boolean	Returns: `true` if this `IdentityHashSet` did not already contain obj. add(Object object to add. obj) Overrides java.util.AbstractCollection.add. Implements java.util.Set.add, java.util.Collection.add. Adds the given object to this `IdentityHashSet`.
public void	clear() Overrides java.util.AbstractCollection.clear. Implements java.util.Set.clear, java.util.Collection.clear. Removes all of the objects from this `IdentityHashSet`.
public Object	Returns: a shallow copy of this `IdentityHashSet`. clone() Overrides java.lang.Object.clone. Returns a shallow copy of this `IdentityHashSet` (the elements are not cloned).
public boolean	Returns: true if this `IdentityHashSet` contains obj by reference. contains(Object the object to find. obj) Overrides java.util.AbstractCollection.contains. Implements java.util.Set.contains, java.util.Collection.contains. Returns `true` if this `IdentityHashSet` contains the given object.
public boolean	Returns: `true` if this `IdentityHashSet` is empty. isEmpty() Overrides java.util.AbstractCollection.isEmpty. Implements java.util.Set.isEmpty, java.util.Collection.isEmpty. Returns `true` if this set contains no elements.
public Iterator<E>	iterator() Implements abstract java.util.AbstractCollection.iterator. Implements java.util.Set.iterator, java.util.Collection.iterator. Get an iterator for this `IdentityHashSet`
private void	readObject(ObjectInputStream s) Deserialize the `IdentityHashSet` from a stream.
private void	rehash() INTERNAL: Re-builds the internal array of Entry's with a larger capacity.
public boolean	Returns: `true` if this `IdentityHashSet` contained obj. remove(Object the object to be removed from this `IdentityHashSet`. obj) Overrides java.util.AbstractCollection.remove. Implements java.util.Set.remove, java.util.Collection.remove. Removes the given object from this `IdentityHashSet`, if present.
public boolean	removeAll(Collection<E> collection containing elements to be removed from this set c) Overrides java.util.AbstractCollection.removeAll. Implements java.util.Set.removeAll, java.util.Collection.removeAll. This implementation throws an `UnsupportedOperationException` because `removeAll` does not work correctly with reference equality testing.
public boolean	retainAll(Collection<E> collection containing elements to be retained in this set c) Overrides java.util.AbstractCollection.retainAll. Implements java.util.Set.retainAll, java.util.Collection.retainAll. This implementation throws an `UnsupportedOperationException`.
public int	Returns: the size of this `IdentityHashSet`. size() Implements abstract java.util.AbstractCollection.size. Implements java.util.Set.size, java.util.Collection.size. Returns the number of elements in this set (its cardinality).
private void	writeObject(ObjectOutputStream s) Serialize the state of this `IdentityHashSet` to a stream.

Inherited from java.util.AbstractCollection:: addAll containsAll toArray toArray toString

Field Detail

count	back to summary
protected transient int count

DEFAULT_INITIAL_CAPACITY	back to summary
pack-priv static final int DEFAULT_INITIAL_CAPACITY

DEFAULT_LOAD_FACTOR	back to summary
pack-priv static final float DEFAULT_LOAD_FACTOR

entries	back to summary
private transient IdentityHashSet.Entry[] entries

loadFactor	back to summary
protected float loadFactor

MAXIMUM_CAPACITY	back to summary
pack-priv static final int MAXIMUM_CAPACITY

serialVersionUID	back to summary
pack-priv static final long serialVersionUID

threshold	back to summary
protected int threshold

Constructor Detail

IdentityHashSet back to summary

IdentityHashSet	back to summary
public IdentityHashSet(int initialCapacity, float loadFactor) Constructs a new `IdentityHashSet` with the given initial capacity and the given loadFactor. Parameters initialCapacity:int the initial capacity of the `IdentityHashSet`. loadFactor:float the loadFactor of the `IdentityHashSet`. Exceptions IllegalArgumentException: if the initial capacity is less than zero, or if the loadFactor is nonpositive.

public IdentityHashSet(int initialCapacity, float loadFactor)

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

Parameters

initialCapacity:int: the initial capacity of the IdentityHashSet.
loadFactor:float: the loadFactor of the IdentityHashSet.

Exceptions

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

IdentityHashSet back to summary

IdentityHashSet	back to summary
public IdentityHashSet(int initialCapacity) Constructs a new `IdentityHashSet` with the given initial capacity and a default loadFactor of `0.75`. Parameters initialCapacity:int the initial capacity of the IdentityHashSet. Exceptions IllegalArgumentException: if the initial capacity is less than zero.

public IdentityHashSet(int initialCapacity)

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

Parameters

initialCapacity:int: the initial capacity of the IdentityHashSet.

Exceptions

IllegalArgumentException:: if the initial capacity is less than zero.

IdentityHashSet	back to summary
public IdentityHashSet() Constructs a new `IdentityHashSet` with a default initial capacity of `32` and a loadfactor of `0.75`.

IdentityHashSet back to summary

IdentityHashSet	back to summary
public IdentityHashSet(Collection<E> c) Constructs a new `IdentityHashSet` with the same contents as the given `Collection`. The new `IdentityHashSet` is created with an initial capacity sufficient to hold the elements of the given `Collection`. Parameters c:Collection<E> the `Collection` whose contents are to be placed in the new `IdentityHashSet`.

public IdentityHashSet(Collection<E> c)

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

Parameters

c:Collection<E>: the Collection whose contents are to be placed in the new IdentityHashSet.

Method Detail

add back to summary

add	back to summary
public boolean add(Object obj) Overrides java.util.AbstractCollection.add. Implements java.util.Set.add, java.util.Collection.add. Adds the given object to this `IdentityHashSet`. Parameters obj:Object object to add. Returns:boolean `true` if this `IdentityHashSet` did not already contain obj. Annotations @Override Exceptions NullPointerException: if obj is null.

public boolean add(Object obj)

Overrides java.util.AbstractCollection.add.

Implements java.util.Set.add, java.util.Collection.add.

Adds the given object to this IdentityHashSet.

Parameters

obj:Object: object to add.

Returns:boolean

true if this IdentityHashSet did not already contain obj.

Annotations

@Override

Exceptions

NullPointerException:: if obj is null.

clear back to summary

clear	back to summary
public void clear() Overrides java.util.AbstractCollection.clear. Implements java.util.Set.clear, java.util.Collection.clear. Removes all of the objects from this `IdentityHashSet`. Annotations @Override

public void clear()

Overrides java.util.AbstractCollection.clear.

Implements java.util.Set.clear, java.util.Collection.clear.

Removes all of the objects from this IdentityHashSet.

Annotations

@Override

clone back to summary

clone	back to summary
public Object clone() Overrides java.lang.Object.clone. Returns a shallow copy of this `IdentityHashSet` (the elements are not cloned). Returns:Object a shallow copy of this `IdentityHashSet`. Annotations @Override

public Object clone()

Overrides java.lang.Object.clone.

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

Returns:Object

a shallow copy of this IdentityHashSet.

Annotations

@Override

contains back to summary

contains	back to summary
public boolean contains(Object obj) Overrides java.util.AbstractCollection.contains. Implements java.util.Set.contains, java.util.Collection.contains. Returns `true` if this `IdentityHashSet` contains the given object. Parameters obj:Object the object to find. Returns:boolean true if this `IdentityHashSet` contains obj by reference. Annotations @Override

public boolean contains(Object obj)

Overrides java.util.AbstractCollection.contains.

Implements java.util.Set.contains, java.util.Collection.contains.

Returns true if this IdentityHashSet contains the given object.

Parameters

obj:Object: the object to find.

Returns:boolean

true if this IdentityHashSet contains obj by reference.

Annotations

@Override

isEmpty back to summary

isEmpty	back to summary
public boolean isEmpty() Overrides java.util.AbstractCollection.isEmpty. Implements java.util.Set.isEmpty, java.util.Collection.isEmpty. Doc from java.util.Set.isEmpty. Returns `true` if this set contains no elements. Returns:boolean `true` if this `IdentityHashSet` is empty. Annotations @Override

public boolean isEmpty()

Overrides java.util.AbstractCollection.isEmpty.

Implements java.util.Set.isEmpty, java.util.Collection.isEmpty.

Doc from java.util.Set.isEmpty.

Returns true if this set contains no elements.

Returns:boolean

true if this IdentityHashSet is empty.

Annotations

@Override

iterator back to summary

iterator	back to summary
public Iterator<E> iterator() Implements abstract java.util.AbstractCollection.iterator. Implements java.util.Set.iterator, java.util.Collection.iterator. Get an iterator for this `IdentityHashSet` Returns:Iterator<E> Doc from java.util.Set.iterator. an iterator over the elements in this set Annotations @Override

public Iterator<E> iterator()

Implements abstract java.util.AbstractCollection.iterator.

Implements java.util.Set.iterator, java.util.Collection.iterator.

Get an iterator for this IdentityHashSet

Returns:Iterator<E>

Doc from java.util.Set.iterator.

an iterator over the elements in this set

Annotations

@Override

readObject	back to summary
private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException Deserialize the `IdentityHashSet` from a stream.

rehash	back to summary
private void rehash() INTERNAL: Re-builds the internal array of Entry's with a larger capacity. This method is called automatically when the number of objects in this IdentityHashSet exceeds its current threshold.

remove back to summary

remove	back to summary
public boolean remove(Object obj) Overrides java.util.AbstractCollection.remove. Implements java.util.Set.remove, java.util.Collection.remove. Removes the given object from this `IdentityHashSet`, if present. Parameters obj:Object the object to be removed from this `IdentityHashSet`. Returns:boolean `true` if this `IdentityHashSet` contained obj. Annotations @Override

public boolean remove(Object obj)

Overrides java.util.AbstractCollection.remove.

Implements java.util.Set.remove, java.util.Collection.remove.

Removes the given object from this IdentityHashSet, if present.

Parameters

obj:Object: the object to be removed from this IdentityHashSet.

Returns:boolean

true if this IdentityHashSet contained obj.

Annotations

@Override

removeAll back to summary

removeAll	back to summary
public boolean removeAll(Collection<E> c) Overrides java.util.AbstractCollection.removeAll. Implements java.util.Set.removeAll, java.util.Collection.removeAll. This implementation throws an `UnsupportedOperationException` because `removeAll` does not work correctly with reference equality testing. Parameters c:Collection<E> Doc from java.util.Set.removeAll. collection containing elements to be removed from this set Returns:boolean Doc from java.util.Set.removeAll. `true` if this set changed as a result of the call Annotations @Override

public boolean removeAll(Collection<E> c)

Overrides java.util.AbstractCollection.removeAll.

Implements java.util.Set.removeAll, java.util.Collection.removeAll.

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

Parameters

c:Collection<E>

Doc from java.util.Set.removeAll.

collection containing elements to be removed from this set

Returns:boolean

Doc from java.util.Set.removeAll.

true if this set changed as a result of the call

Annotations

@Override

retainAll back to summary

retainAll	back to summary
public boolean retainAll(Collection<E> c) Overrides java.util.AbstractCollection.retainAll. Implements java.util.Set.retainAll, java.util.Collection.retainAll. This implementation throws an `UnsupportedOperationException`. The Javadocs for `AbstractCollection` indicates that `retainAll` is an optional method. Parameters c:Collection<E> Doc from java.util.Set.retainAll. collection containing elements to be retained in this set Returns:boolean Doc from java.util.Set.retainAll. `true` if this set changed as a result of the call Annotations @Override

public boolean retainAll(Collection<E> c)

Overrides java.util.AbstractCollection.retainAll.

Implements java.util.Set.retainAll, java.util.Collection.retainAll.

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

Parameters

c:Collection<E>

Doc from java.util.Set.retainAll.

collection containing elements to be retained in this set

Returns:boolean

Doc from java.util.Set.retainAll.

true if this set changed as a result of the call

Annotations

@Override

size back to summary

size	back to summary
public int size() Implements abstract java.util.AbstractCollection.size. Implements java.util.Set.size, java.util.Collection.size. Doc from java.util.Set.size. Returns the number of elements in this set (its cardinality). If this set contains more than `Integer.MAX_VALUE` elements, returns `Integer.MAX_VALUE`. Returns:int the size of this `IdentityHashSet`. Annotations @Override

public int size()

Implements abstract java.util.AbstractCollection.size.

Implements java.util.Set.size, java.util.Collection.size.

Doc from java.util.Set.size.

Returns the number of elements in this set (its cardinality). If this set contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.

Returns:int

the size of this IdentityHashSet.

Annotations

@Override

writeObject back to summary

writeObject	back to summary
private void writeObject(ObjectOutputStream s) throws IOException, ClassNotFoundException Serialize the state of this `IdentityHashSet` to a stream. Serial data The capacity of the `IdentityHashSet` (the length of the bucket array) is emitted (int), followed by the size of the `IdentityHashSet`, followed by the contents (in no particular order).

private void writeObject(ObjectOutputStream s) throws IOException, ClassNotFoundException

Serialize the state of this IdentityHashSet to a stream.

Serial data: The capacity of the IdentityHashSet (the length of the bucket array) is emitted (int), followed by the size of the IdentityHashSet, followed by the contents (in no particular order).

org.eclipse.persistence.internal.helper back to summary

private Class IdentityHashSet.Entry

Class Inheritance

extends Object

java.lang.Object
org.eclipse.persistence.internal.helper.IdentityHashSet.Entry

IdentityHashSet entry.

Field Summary

Modifier and Type	Field and Description
pack-priv int	hash
pack-priv IdentityHashSet.Entry	next
pack-priv Object	value

Constructor Summary

Access	Constructor and Description
pack-priv	Entry(int hash, Object value, IdentityHashSet.Entry next)

Method Summary

Modifier and Type	Method and Description
protected Object	clone() Overrides java.lang.Object.clone. Creates and returns a copy of this object.

Inherited from java.lang.Object:: equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

hash	back to summary
pack-priv int hash

next	back to summary
pack-priv IdentityHashSet.Entry next

value	back to summary
pack-priv Object value

Constructor Detail

Entry	back to summary
pack-priv Entry(int hash, Object value, IdentityHashSet.Entry next)

Method Detail

clone back to summary

clone	back to summary
protected Object clone() Overrides java.lang.Object.clone. Doc from java.lang.Object.clone. Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object `x`, the expression: x.clone() != x will be true, and that the expression: x.clone().getClass() == x.getClass() will be `true`, but these are not absolute requirements. While it is typically the case that: x.clone().equals(x) will be `true`, this is not an absolute requirement. By convention, the returned object should be obtained by calling `super.clone`. If a class and all of its superclasses (except `Object`) obey this convention, it will be the case that `x.clone().getClass() == x.getClass()`. By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by `super.clone` before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by `super.clone` need to be modified. Returns:Object a clone of this instance. Annotations @Override

protected Object clone()

Overrides java.lang.Object.clone.

Doc from java.lang.Object.clone.

Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object x, the expression:

x.clone() != x

will be true, and that the expression:

x.clone().getClass() == x.getClass()

will be true, but these are not absolute requirements. While it is typically the case that:

x.clone().equals(x)

will be true, this is not an absolute requirement.

By convention, the returned object should be obtained by calling super.clone. If a class and all of its superclasses (except Object) obey this convention, it will be the case that x.clone().getClass() == x.getClass().

By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by super.clone before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by super.clone need to be modified.

Returns:Object

a clone of this instance.

Annotations

@Override

org.eclipse.persistence.internal.helper back to summary

pack-priv Class IdentityHashSet.IdentityHashSetIterator

Class Inheritance

extends Object
implements Iterator

java.lang.Object
org.eclipse.persistence.internal.helper.IdentityHashSet.IdentityHashSetIterator

All Implemented Interfaces

java.util.Iterator

Field Summary

Modifier and Type	Field and Description
pack-priv IdentityHashSet.Entry[]	copyOfEntries
pack-priv IdentityHashSet.Entry	entry
pack-priv int	index
pack-priv IdentityHashSet.Entry	lastReturned

Constructor Summary

Access	Constructor and Description
pack-priv	IdentityHashSetIterator()

Method Summary

Modifier and Type	Method and Description
public boolean	hasNext() Implements java.util.Iterator.hasNext. Returns `true` if the iteration has more elements.
public Object	next() Implements java.util.Iterator.next. Returns the next element in the iteration.
public void	remove() Overrides default java.util.Iterator.remove. Removes from the underlying collection the last element returned by this iterator (optional operation).

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

copyOfEntries	back to summary
pack-priv IdentityHashSet.Entry[] copyOfEntries

entry	back to summary
pack-priv IdentityHashSet.Entry entry

index	back to summary
pack-priv int index

lastReturned	back to summary
pack-priv IdentityHashSet.Entry lastReturned

Constructor Detail

IdentityHashSetIterator	back to summary
pack-priv IdentityHashSetIterator()

Method Detail

hasNext back to summary

hasNext	back to summary
public boolean hasNext() Implements java.util.Iterator.hasNext. Doc from java.util.Iterator.hasNext. Returns `true` if the iteration has more elements. (In other words, returns `true` if `next` would return an element rather than throwing an exception.) Returns:boolean `true` if the iteration has more elements Annotations @Override

public boolean hasNext()

Implements java.util.Iterator.hasNext.

Doc from java.util.Iterator.hasNext.

Returns true if the iteration has more elements. (In other words, returns true if next would return an element rather than throwing an exception.)

Returns:boolean

true if the iteration has more elements

Annotations

@Override

next	back to summary
public Object next() Implements java.util.Iterator.next. Doc from java.util.Iterator.next. Returns the next element in the iteration. Returns:Object the next element in the iteration Annotations @Override

back to summary

public Object next()

Implements java.util.Iterator.next.

Doc from java.util.Iterator.next.

Returns the next element in the iteration.

Returns:Object

the next element in the iteration

Annotations

@Override

remove back to summary

remove	back to summary
public void remove() Overrides default java.util.Iterator.remove. Doc from java.util.Iterator.remove. Removes from the underlying collection the last element returned by this iterator (optional operation). This method can be called only once per call to `next`. The behavior of an iterator is unspecified if the underlying collection is modified while the iteration is in progress in any way other than by calling this method, unless an overriding class has specified a concurrent modification policy. The behavior of an iterator is unspecified if this method is called after a call to the `forEachRemaining` method. Annotations @Override

public void remove()

Overrides default java.util.Iterator.remove.

Doc from java.util.Iterator.remove.

Removes from the underlying collection the last element returned by this iterator (optional operation). This method can be called only once per call to next.

The behavior of an iterator is unspecified if the underlying collection is modified while the iteration is in progress in any way other than by calling this method, unless an overriding class has specified a concurrent modification policy.

The behavior of an iterator is unspecified if this method is called after a call to the forEachRemaining method.

Annotations

@Override

public Class IdentityHashSet

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private Class IdentityHashSet.Entry

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

pack-priv Class IdentityHashSet.IdentityHashSetIterator

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail