Package com.luciad.util.collections

Class TLcdIdentityHashSet<T>

java.lang.Object

java.util.AbstractCollection<T>

java.util.AbstractSet<T>

com.luciad.util.collections.TLcdIdentityHashSet<T>

All Implemented Interfaces:

ILcdCloneable, Cloneable, Iterable<T>, Collection<T>, Set<T>

public class TLcdIdentityHashSet<T>
extends AbstractSet<T>
implements ILcdCloneable

A hash set that uses identity comparisons for its values. It is functionally equivalent to Collections.newSetFromMap(new IdentityHashMap<>());, but has some clone optimizations.

Since:

2012.0

Constructor Summary

Constructors

Constructor	Description
TLcdIdentityHashSet()
TLcdIdentityHashSet(int aInitialCapacity)
TLcdIdentityHashSet(Collection<? extends T> aCollection)

Method Summary

Modifier and Type	Method	Description
boolean	add(T e)
boolean	addAll(Collection<? extends T> c)
void	clear()
TLcdIdentityHashSet<T>	clone()	Makes Object.clone() public.
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
boolean	equals(Object o)
int	hashCode()
boolean	isEmpty()
Iterator<T>	iterator()
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	retainAll(Collection<?> c)
int	size()
Object[]	toArray()
<T> T[]	toArray(T[] a)

Methods inherited from class java.util.AbstractCollection

toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

spliterator

Constructor Details

TLcdIdentityHashSet

public TLcdIdentityHashSet()

TLcdIdentityHashSet

public TLcdIdentityHashSet(int aInitialCapacity)

TLcdIdentityHashSet

public TLcdIdentityHashSet(Collection<? extends T> aCollection)

Method Details

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<T>

Specified by:

contains in interface Set<T>

Overrides:

contains in class AbstractCollection<T>

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Collection<T>

Specified by:

iterator in interface Iterable<T>

Specified by:

iterator in interface Set<T>

Specified by:

iterator in class AbstractCollection<T>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<T>

Specified by:

toArray in interface Set<T>

Overrides:

toArray in class AbstractCollection<T>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface Collection<T>

Specified by:

toArray in interface Set<T>

Overrides:

toArray in class AbstractCollection<T>

add

public boolean add(T e)

Specified by:

add in interface Collection<T>

Specified by:

add in interface Set<T>

Overrides:

add in class AbstractCollection<T>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<T>

Specified by:

containsAll in interface Set<T>

Overrides:

containsAll in class AbstractCollection<T>

addAll

public boolean addAll(Collection<? extends T> c)

Specified by:

addAll in interface Collection<T>

Specified by:

addAll in interface Set<T>

Overrides:

addAll in class AbstractCollection<T>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<T>

Specified by:

retainAll in interface Set<T>

Overrides:

retainAll in class AbstractCollection<T>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<T>

Specified by:

removeAll in interface Set<T>

Overrides:

removeAll in class AbstractSet<T>

size

public int size()

Specified by:

size in interface Collection<T>

Specified by:

size in interface Set<T>

Specified by:

size in class AbstractCollection<T>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<T>

Specified by:

isEmpty in interface Set<T>

Overrides:

isEmpty in class AbstractCollection<T>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<T>

Specified by:

remove in interface Set<T>

Overrides:

remove in class AbstractCollection<T>

clear

public void clear()

Specified by:

clear in interface Collection<T>

Specified by:

clear in interface Set<T>

Overrides:

clear in class AbstractCollection<T>

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<T>

Specified by:

equals in interface Set<T>

Overrides:

equals in class AbstractSet<T>

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<T>

Specified by:

hashCode in interface Set<T>

Overrides:

hashCode in class AbstractSet<T>

clone

public TLcdIdentityHashSet<T> clone()

Description copied from interface: ILcdCloneable

Makes Object.clone() public.

When for example extending from java.lang.Object, it can be implemented like this:

 public Object clone() {
   try {
     return super.clone();
   } catch ( CloneNotSupportedException e ) {
     // Cannot happen: extends from Object and implements Cloneable (see also Object.clone)
     throw new RuntimeException( e );
   }
 }
 

Specified by:

clone in interface ILcdCloneable

Overrides:

clone in class Object

See Also:

• Object.clone()