com.sun.javafx.collections

Class UnmodifiableListSet<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

com.sun.javafx.collections.UnmodifiableListSet<E>

All Implemented Interfaces:

Iterable<E>, Collection<E>, Set<E>

public final class UnmodifiableListSet<E>
extends AbstractSet<E>

A special unmodifiable implementation of Set which wraps a List. It does not check for uniqueness! There are several places in our implementation (Node.lookupAll and ObservableSetWrapper are two such places) where we want to use a List for speed of insertion and will be in a position to ensure that the List is unique without having the overhead of hashing, but want to present an unmodifiable Set in the public API.

Constructor Summary

Constructors

Constructor and Description
UnmodifiableListSet(List<E> backingList)

Method Summary

Modifier and Type	Method and Description
Iterator<E>	iterator() Required implementation that returns an iterator.
int	size()

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

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

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

add, addAll, clear, contains, containsAll, isEmpty, remove, retainAll, spliterator, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

UnmodifiableListSet

public UnmodifiableListSet(List<E> backingList)

Method Detail

iterator

public Iterator<E> iterator()

Required implementation that returns an iterator. Note that I don't just return backingList.iterator() because doing so would open up a whole through which developers could remove items from this supposedly unmodifiable set. So the iterator is wrapped such that it throws an exception on remove.

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in interface Set<E>

Specified by:

iterator in class AbstractCollection<E>

size

public int size()

Specified by:

size in interface Collection<E>

Specified by:

size in interface Set<E>

Specified by:

size in class AbstractCollection<E>