Class UnmodifiableCollectionView<V,E>

java.lang.Object

java.util.AbstractCollection<V>

org.agrona.collections.UnmodifiableCollectionView<V,E>

Type Parameters:

V - The type of the view.

E - The type of the underlying element.

All Implemented Interfaces:

Iterable<V>, Collection<V>

public class UnmodifiableCollectionView<V,E>
extends AbstractCollection<V>

An unmodifiable view of a collection that maps each element in an underlying collection into a view.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
final class	UnmodifiableCollectionView.ReusableIterator	A stateful reusable iterator.

Field Summary

Fields

Modifier and Type	Field	Description
private final Collection<E>	elements
private final UnmodifiableCollectionView<V,E>.ReusableIterator	iterator
private final Function<E,V>	viewer

Constructor Summary

Constructors

Constructor	Description
UnmodifiableCollectionView(Function<E,V> viewer, Collection<E> elements)	Constructs an unmodifiable view over collection.

Method Summary

Modifier and Type	Method	Description
UnmodifiableCollectionView<V,E>.ReusableIterator	iterator()
int	size()

Methods inherited from class AbstractCollection

add, addAll, clear, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class Object

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

Methods inherited from interface Collection

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

Methods inherited from interface Iterable

forEach

Field Details

iterator

private final UnmodifiableCollectionView<V,E>.ReusableIterator iterator

viewer

private final Function<E,V> viewer

elements

private final Collection<E> elements

Constructor Details

UnmodifiableCollectionView

public UnmodifiableCollectionView(Function<E,V> viewer,
 Collection<E> elements)

Constructs an unmodifiable view over collection.

Parameters:

viewer - function.

elements - collection to create a view for.

Method Details

size

public int size()

Specified by:

size in interface Collection<V>

Specified by:

size in class AbstractCollection<V>

iterator

public UnmodifiableCollectionView<V,E>.ReusableIterator iterator()

Specified by:

iterator in interface Collection<V>

Specified by:

iterator in interface Iterable<V>

Specified by:

iterator in class AbstractCollection<V>