org.apache.commons.collections4.queue
Class AbstractQueueDecorator<E>

java.lang.Object
  org.apache.commons.collections4.collection.AbstractCollectionDecorator<E>
      org.apache.commons.collections4.queue.AbstractQueueDecorator<E>

Type Parameters:

E - the type of the elements in the queue

All Implemented Interfaces:

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

Direct Known Subclasses:

UnmodifiableQueue

public abstract class AbstractQueueDecorator<E>
extends AbstractCollectionDecorator<E>
implements Queue<E>

Decorates another Queue to provide additional behaviour.

Methods are forwarded directly to the decorated queue.

Since:

4.0

Version:

$Id: AbstractQueueDecorator.java 1477765 2013-04-30 18:37:37Z tn $

See Also:

Serialized Form

AbstractQueueDecorator

protected AbstractQueueDecorator()

Constructor only used in deserialization, do not use otherwise.

AbstractQueueDecorator

protected AbstractQueueDecorator(Queue<E> queue)

Constructor that wraps (not copies).

Parameters:

queue - the queue to decorate, must not be null

Throws:

IllegalArgumentException - if list is null

decorated

protected Queue<E> decorated()

Gets the queue being decorated.

Overrides:

decorated in class AbstractCollectionDecorator<E>

Returns:

the decorated queue

offer

public boolean offer(E obj)

Specified by:

offer in interface Queue<E>

poll

public E poll()

Specified by:

poll in interface Queue<E>

peek

public E peek()

Specified by:

peek in interface Queue<E>

element

public E element()

Specified by:

element in interface Queue<E>

remove

public E remove()

Specified by:

remove in interface Queue<E>