java.lang.Object
com.google.common.collect.ForwardingObject
com.google.common.collect.ForwardingCollection<E>
com.google.common.collect.ForwardingQueue<E>
com.google.common.collect.ForwardingDeque<E>
- All Implemented Interfaces:
Iterable<E>
,Collection<E>
,Deque<E>
,Queue<E>
,SequencedCollection<E>
- Direct Known Subclasses:
ForwardingBlockingDeque
,ForwardingBlockingDeque
@GwtIncompatible
public abstract class ForwardingDeque<E extends @Nullable Object>
extends ForwardingQueue<E>
implements Deque<E>
A deque which forwards all its method calls to another deque. Subclasses should override one or
more methods to modify the behavior of the backing deque as desired per the decorator pattern.
Warning: The methods of ForwardingDeque
forward indiscriminately to the
methods of the delegate. For example, overriding ForwardingCollection.add(E)
alone will not change the
behavior of ForwardingQueue.offer(E)
which can lead to unexpected behavior. In this case, you should
override offer
as well.
default
method warning: This class does not forward calls to
default
methods. Instead, it inherits their default implementations. When those implementations
invoke methods, they invoke methods on the ForwardingDeque
.
- Since:
- 12.0
- Author:
- Kurt Alfred Kluever
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Constructor Summary
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Method Summary
Methods inherited from class com.google.common.collect.ForwardingQueue
element, offer, peek, poll, remove, standardOffer, standardPeek, standardPoll
Methods inherited from class com.google.common.collect.ForwardingCollection
add, addAll, clear, contains, containsAll, isEmpty, iterator, remove, removeAll, retainAll, size, standardAddAll, standardClear, standardContains, standardContainsAll, standardIsEmpty, standardRemove, standardRemoveAll, standardRetainAll, standardToArray, standardToArray, standardToString, toArray, toArray
Methods inherited from class com.google.common.collect.ForwardingObject
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
clear, containsAll, equals, hashCode, isEmpty, parallelStream, removeAll, removeIf, retainAll, spliterator, stream, toArray, toArray, toArray
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Constructor Details
-
ForwardingDeque
protected ForwardingDeque()Constructor for use by subclasses.
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Method Details
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delegate
Description copied from class:ForwardingObject
Returns the backing delegate instance that methods are forwarded to. Abstract subclasses generally override this method with an abstract method that has a more specific return type, such asForwardingSet.delegate()
. Concrete subclasses override this method to supply the instance being decorated.- Specified by:
delegate
in classForwardingQueue<E extends @Nullable Object>
-
addFirst
-
addLast
-
descendingIterator
- Specified by:
descendingIterator
in interfaceDeque<E extends @Nullable Object>
-
getFirst
-
getLast
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offerFirst
- Specified by:
offerFirst
in interfaceDeque<E extends @Nullable Object>
-
offerLast
-
peekFirst
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peekLast
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pollFirst
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pollLast
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pop
-
push
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removeFirst
- Specified by:
removeFirst
in interfaceDeque<E extends @Nullable Object>
- Specified by:
removeFirst
in interfaceSequencedCollection<E extends @Nullable Object>
-
removeLast
- Specified by:
removeLast
in interfaceDeque<E extends @Nullable Object>
- Specified by:
removeLast
in interfaceSequencedCollection<E extends @Nullable Object>
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removeFirstOccurrence
- Specified by:
removeFirstOccurrence
in interfaceDeque<E extends @Nullable Object>
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removeLastOccurrence
- Specified by:
removeLastOccurrence
in interfaceDeque<E extends @Nullable Object>
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