org.glassfish.jersey.internal.guava

Class ForwardingCollection<E>

java.lang.Object

org.glassfish.jersey.internal.guava.ForwardingCollection<E>

All Implemented Interfaces:

Iterable<E>, Collection<E>

Direct Known Subclasses:

ForwardingSet

public abstract class ForwardingCollection<E>
extends Object
implements Collection<E>

A collection which forwards all its method calls to another collection. Subclasses should override one or more methods to modify the behavior of the backing collection as desired per the decorator pattern.

Warning: The methods of ForwardingCollection forward indiscriminately to the methods of the delegate. For example, overriding add(E) alone will not change the behavior of addAll(java.util.Collection<? extends E>), which can lead to unexpected behavior. In this case, you should override addAll as well, either providing your own implementation, or delegating to the provided standardAddAll method.

The standard methods are not guaranteed to be thread-safe, even when all of the methods that they depend on are thread-safe.

Since:

2.0 (imported from Google Collections Library)

Author:

Kevin Bourrillion, Louis Wasserman

Method Summary

Modifier and Type	Method and Description
boolean	add(E element)
boolean	addAll(Collection<? extends E> collection)
void	clear()
boolean	contains(Object object)
boolean	containsAll(Collection<?> collection)
protected abstract Collection<E>	delegate() Returns the backing delegate instance that methods are forwarded to.
boolean	isEmpty()
Iterator<E>	iterator()
boolean	remove(Object object)
boolean	removeAll(Collection<?> collection)
boolean	retainAll(Collection<?> collection)
int	size()
Object[]	toArray()
<T> T[]	toArray(T[] array)
String	toString() Returns the string representation generated by the delegate's toString method.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

equals, hashCode, parallelStream, removeIf, spliterator, stream

Methods inherited from interface java.lang.Iterable

forEach

Method Detail

delegate

protected abstract Collection<E> delegate()

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 as ForwardingSet.delegate(). Concrete subclasses override this method to supply the instance being decorated.

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface Collection<E>

size

public int size()

Specified by:

size in interface Collection<E>

removeAll

public boolean removeAll(Collection<?> collection)

Specified by:

removeAll in interface Collection<E>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<E>

contains

public boolean contains(Object object)

Specified by:

contains in interface Collection<E>

add

public boolean add(E element)

Specified by:

add in interface Collection<E>

remove

public boolean remove(Object object)

Specified by:

remove in interface Collection<E>

containsAll

public boolean containsAll(Collection<?> collection)

Specified by:

containsAll in interface Collection<E>

addAll

public boolean addAll(Collection<? extends E> collection)

Specified by:

addAll in interface Collection<E>

retainAll

public boolean retainAll(Collection<?> collection)

Specified by:

retainAll in interface Collection<E>

clear

public void clear()

Specified by:

clear in interface Collection<E>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<E>

toArray

public <T> T[] toArray(T[] array)

Specified by:

toArray in interface Collection<E>

toString

public String toString()

Returns the string representation generated by the delegate's toString method.

Overrides:

toString in class Object