com.google.common.collect
Class ForwardingQueue<E>
java.lang.Object
com.google.common.collect.ForwardingObject
com.google.common.collect.ForwardingCollection<E>
com.google.common.collect.ForwardingQueue<E>
- All Implemented Interfaces:
- Serializable, Iterable<E>, Collection<E>, Queue<E>
public abstract class ForwardingQueue<E>
- extends ForwardingCollection<E>
- implements Queue<E>
A queue which forwards all its method calls to another queue. Subclasses
should override one or more methods to modify the behavior of the backing
queue as desired per the decorator pattern.
- Author:
- Mike Bostock
- See Also:
ForwardingObject
,
Serialized Form
Constructor Summary |
protected |
ForwardingQueue(Queue<E> delegate)
Constructs a forwarding queue that forwards to the provided delegate. |
Methods inherited from class com.google.common.collect.ForwardingCollection |
add, addAll, clear, contains, containsAll, containsAllImpl, containsImpl, isEmpty, iterator, remove, removeAll, removeAllImpl, removeImpl, retainAll, retainAllImpl, size, toArray, toArray, toArrayImpl, toArrayImpl, toStringImpl |
Methods inherited from interface java.util.Collection |
add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray |
ForwardingQueue
protected ForwardingQueue(Queue<E> delegate)
- Constructs a forwarding queue that forwards to the provided delegate.
delegate
protected Queue<E> delegate()
- Description copied from class:
ForwardingObject
- Returns the backing delegate object. This method should be overridden to
specify the correct return type. For example:
@SuppressWarnings("unchecked")
@Override protected Foo delegate() {
return (Foo) super.delegate();
}
This method should always return the same delegate instance that was passed
to the constructor.
- Overrides:
delegate
in class ForwardingCollection<E>
offer
public boolean offer(E o)
- Specified by:
offer
in interface Queue<E>
poll
public E poll()
- Specified by:
poll
in interface Queue<E>
remove
public E remove()
- Specified by:
remove
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>