Package org.opendaylight.yangtools.util

Class UnmodifiableCollection<E>

java.lang.Object

org.opendaylight.yangtools.util.UnmodifiableCollection<E>

Type Parameters:

E - the type of elements in this collection

All Implemented Interfaces:

Serializable, Iterable<E>, Collection<E>

public final class UnmodifiableCollection<E>
extends Object
implements Collection<E>, Serializable

An unmodifiable view over a Collection. Unlike the view returned via Collections.unmodifiableCollection(Collection), this class checks its argument to ensure multiple encapsulation does not occur.

This class checks the argument so it prevents multiple encapsulation. Subclasses of ImmutableCollection are also recognized and not encapsulated.

See Also:

• Serialized Form

Method Summary

Modifier and Type	Method	Description
boolean	add(E e)
boolean	addAll(Collection<? extends E> c)
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
static <T> @NonNull Collection<T>	create(@NonNull Collection<T> collection)	Create an unmodifiable view of the target collection.
boolean	isEmpty()
@NonNull Iterator<E>	iterator()
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	retainAll(Collection<?> c)
int	size()
Object[]	toArray()
<T> T[]	toArray(T[] a)
@NonNull String	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

equals, hashCode, parallelStream, removeIf, spliterator, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Method Details

create

public static <T> @NonNull Collection<T> create(@NonNull Collection<T> collection)

Create an unmodifiable view of the target collection. If the instance is known to be unmodifiable, that instance is returned.

Parameters:

collection - Target collection

Returns:

An unmodifiable view of the collection

Throws:

NullPointerException - if collection is null

iterator

public @NonNull Iterator<E> iterator()

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in interface Iterable<E>

size

public int size()

Specified by:

size in interface Collection<E>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<E>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<E>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<E>

toArray

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

Specified by:

toArray in interface Collection<E>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<E>

add

public boolean add(E e)

Specified by:

add in interface Collection<E>

addAll

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

Specified by:

addAll in interface Collection<E>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<E>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<E>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<E>

clear

public void clear()

Specified by:

clear in interface Collection<E>

toString

public @NonNull String toString()

Overrides:

toString in class Object