net.ontopia.utils
Class UniqueSet<E>

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractSet<E>
          net.ontopia.utils.CompactHashSet<E>
              net.ontopia.utils.UniqueSet<E>

All Implemented Interfaces:

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

public class UniqueSet<E>
extends CompactHashSet<E>

INTERNAL:

Field Summary

protected int	hc
protected int	hc_modCount

Fields inherited from class net.ontopia.utils.CompactHashSet

deletedObject, elements, freecells, INITIAL_SIZE, LOAD_FACTOR, modCount, nullObject, objects

Constructor Summary

UniqueSet()

UniqueSet(Collection<E> c)

UniqueSet(int size)

UniqueSet(UniqueSet<E> s)

UniqueSet(UniqueSet<E> s1, UniqueSet<E> s2)

Method Summary

boolean	add(Object o) Adds the specified element to this set if it is not already present.
UniqueSet<E>	add(UniqueSet<E> set, Object o, boolean dereference)
boolean	addAll(Collection<? extends E> coll)
void	clear() Removes all of the elements from this set.
void	dereference(UniqueSet<E> set)
void	dump() INTERNAL: Used for debugging only.
protected boolean	equalsAdd(UniqueSet<E> other, Object o)
protected boolean	equalsRemove(UniqueSet<E> other, Object o)
UniqueSet<E>	get(Set<E> set) INTERNAL: Get the internal representation of a given set.
int	getReferenceCount()
int	hashCode()
protected E	lookup(Object o) INTERNAL: Looks up the object in the hashset and returns the actual object stored at the hashset.
boolean	remove(Object o) Removes the specified element from the set.
UniqueSet<E>	remove(UniqueSet<E> set, Object o, boolean dereference)
boolean	removeAll(Collection<?> coll)
boolean	retainAll(Collection<?> coll)
String	toString()

Methods inherited from class net.ontopia.utils.CompactHashSet

contains, isEmpty, iterator, rehash, rehash, size, toArray, toArray

Methods inherited from class java.util.AbstractSet

equals

Methods inherited from class java.util.AbstractCollection

containsAll

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

containsAll

Field Detail

hc

protected int hc

hc_modCount

protected int hc_modCount

Constructor Detail

UniqueSet

public UniqueSet()

UniqueSet

public UniqueSet(int size)

UniqueSet

public UniqueSet(Collection<E> c)

UniqueSet

public UniqueSet(UniqueSet<E> s)

UniqueSet

public UniqueSet(UniqueSet<E> s1,
                 UniqueSet<E> s2)

Method Detail

getReferenceCount

public int getReferenceCount()

get

public UniqueSet<E> get(Set<E> set)

INTERNAL: Get the internal representation of a given set. The initial reference count is 1.

lookup

protected E lookup(Object o)

INTERNAL: Looks up the object in the hashset and returns the actual object stored at the hashset. Note that this might be another object, but one that is considered to be equal.

dereference

public void dereference(UniqueSet<E> set)

equalsAdd

protected boolean equalsAdd(UniqueSet<E> other,
                            Object o)

equalsRemove

protected boolean equalsRemove(UniqueSet<E> other,
                               Object o)

add

public UniqueSet<E> add(UniqueSet<E> set,
                        Object o,
                        boolean dereference)

remove

public UniqueSet<E> remove(UniqueSet<E> set,
                           Object o,
                           boolean dereference)

dump

public void dump()

Description copied from class: CompactHashSet

INTERNAL: Used for debugging only.

Overrides:

dump in class CompactHashSet<E>

add

public boolean add(Object o)

Description copied from class: CompactHashSet

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

Specified by:

add in interface Collection<E>

Specified by:

add in interface Set<E>

Overrides:

add in class CompactHashSet<E>

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(Object o)

Description copied from class: CompactHashSet

Removes the specified element from the set.

Specified by:

remove in interface Collection<E>

Specified by:

remove in interface Set<E>

Overrides:

remove in class CompactHashSet<E>

addAll

public boolean addAll(Collection<? extends E> coll)

Specified by:

addAll in interface Collection<E>

Specified by:

addAll in interface Set<E>

Overrides:

addAll in class AbstractCollection<E>

removeAll

public boolean removeAll(Collection<?> coll)

Specified by:

removeAll in interface Collection<E>

Specified by:

removeAll in interface Set<E>

Overrides:

removeAll in class AbstractSet<E>

retainAll

public boolean retainAll(Collection<?> coll)

Specified by:

retainAll in interface Collection<E>

Specified by:

retainAll in interface Set<E>

Overrides:

retainAll in class AbstractCollection<E>

clear

public void clear()

Description copied from class: CompactHashSet

Removes all of the elements from this set.

Specified by:

clear in interface Collection<E>

Specified by:

clear in interface Set<E>

Overrides:

clear in class CompactHashSet<E>

toString

public String toString()

Overrides:

toString in class AbstractCollection<E>

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<E>

Specified by:

hashCode in interface Set<E>

Overrides:

hashCode in class AbstractSet<E>