org.opendaylight.controller.cluster.access.client

Class EmptyQueue<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractQueue<E>

org.opendaylight.controller.cluster.access.client.EmptyQueue<E>

Type Parameters:

E - the type of elements held in this collection

All Implemented Interfaces:

Iterable<E>, Collection<E>, Queue<E>

@Beta
public final class EmptyQueue<E>
extends AbstractQueue<E>

A specialized always-empty implementation of Queue. This implementation will always refuse new elements in its offer(Object) method.

Author:

Robert Varga

Method Summary

Modifier and Type	Method and Description
static <T> Queue<T>	getInstance()
Iterator<E>	iterator()
boolean	offer(E e)
E	peek()
E	poll()
int	size()

Methods inherited from class java.util.AbstractQueue

add, addAll, clear, element, remove

Methods inherited from class java.util.AbstractCollection

contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

contains, containsAll, equals, hashCode, isEmpty, parallelStream, remove, removeAll, removeIf, retainAll, spliterator, stream, toArray, toArray

Methods inherited from interface java.lang.Iterable

forEach

Method Detail

getInstance

public static <T> Queue<T> getInstance()

offer

public boolean offer(E e)

poll

public E poll()

peek

public E peek()

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in class AbstractCollection<E>

size

public int size()

Specified by:

size in interface Collection<E>

Specified by:

size in class AbstractCollection<E>