org.opendaylight.yangtools.util

Class SingletonSet<E>

java.lang.Object

org.opendaylight.yangtools.util.SingletonSet<E>

All Implemented Interfaces:

Serializable, Iterable<E>, Collection<E>, Set<E>, Immutable, MutationBehaviour<Immutable>

@Beta
public abstract class SingletonSet<E>
extends Object
implements Set<E>, Immutable, Serializable

A Set containing a single value. For some reason neither Java nor Guava provide direct access to the retained element -- which is desirable in some situations, as is the case in SharedSingletonMap.entrySet().

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SingletonSet()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(E e)
boolean	addAll(Collection<? extends E> c)
void	clear()
boolean	containsAll(Collection<?> c)
boolean	equals(Object obj)
abstract E	getElement()
abstract int	hashCode()
boolean	isEmpty()
Iterator<E>	iterator()
static <E> SingletonSet<E>	of(E element)
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.lang.Object

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

Methods inherited from interface java.util.Set

contains

Constructor Detail

SingletonSet

public SingletonSet()

Method Detail

of

public static <E> SingletonSet<E> of(@Nonnull
                     E element)

getElement

public abstract E getElement()

size

public final int size()

Specified by:

size in interface Collection<E>

Specified by:

size in interface Set<E>

isEmpty

public final boolean isEmpty()

Specified by:

isEmpty in interface Collection<E>

Specified by:

isEmpty in interface Set<E>

iterator

public final Iterator<E> iterator()

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in interface Set<E>

toArray

public final Object[] toArray()

Specified by:

toArray in interface Collection<E>

Specified by:

toArray in interface Set<E>

toArray

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

Specified by:

toArray in interface Collection<E>

Specified by:

toArray in interface Set<E>

add

public final boolean add(E e)

Specified by:

add in interface Collection<E>

Specified by:

add in interface Set<E>

remove

public final boolean remove(Object o)

Specified by:

remove in interface Collection<E>

Specified by:

remove in interface Set<E>

containsAll

public final boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<E>

Specified by:

containsAll in interface Set<E>

addAll

public final boolean addAll(Collection<? extends E> c)

Specified by:

addAll in interface Collection<E>

Specified by:

addAll in interface Set<E>

retainAll

public final boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<E>

Specified by:

retainAll in interface Set<E>

removeAll

public final boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<E>

Specified by:

removeAll in interface Set<E>

clear

public final void clear()

Specified by:

clear in interface Collection<E>

Specified by:

clear in interface Set<E>

hashCode

public abstract int hashCode()

Specified by:

hashCode in interface Collection<E>

Specified by:

hashCode in interface Set<E>

Overrides:

hashCode in class Object

equals

public final boolean equals(Object obj)

Specified by:

equals in interface Collection<E>

Specified by:

equals in interface Set<E>

Overrides:

equals in class Object