it.unimi.dsi.fastutil.objects
Class ReferenceSortedSets

java.lang.Object
  it.unimi.dsi.fastutil.objects.ReferenceSortedSets

public class ReferenceSortedSets
extends Object

A class providing static methods and objects that do useful things with type-specific sorted sets.

See Also:

Collections

Nested Class Summary

static class	ReferenceSortedSets.EmptySet<K> An immutable class representing the empty sorted set and implementing a type-specific set interface.
static class	ReferenceSortedSets.Singleton<K> A class representing a singleton sorted set.
static class	ReferenceSortedSets.SynchronizedSortedSet<K> A synchronized wrapper class for sorted sets.
static class	ReferenceSortedSets.UnmodifiableSortedSet<K> An unmodifiable wrapper class for sorted sets.

Field Summary

static ReferenceSortedSets.EmptySet

EMPTY_SET An empty sorted set (immutable).

Method Summary

static <K> ReferenceSortedSet<K>	singleton(K element) Returns a type-specific immutable sorted set containing only the specified element.
static <K> ReferenceSortedSet<K>	singleton(K element, Comparator<? super K> comparator) Returns a type-specific immutable sorted set containing only the specified element, and using a specified comparator.
static <K> ReferenceSortedSet<K>	synchronize(ReferenceSortedSet<K> s) Returns a synchronized type-specific sorted set backed by the given type-specific sorted set.
static <K> ReferenceSortedSet<K>	synchronize(ReferenceSortedSet<K> s, Object sync) Returns a synchronized type-specific sorted set backed by the given type-specific sorted set, using an assigned object to synchronize.
static <K> ReferenceSortedSet<K>	unmodifiable(ReferenceSortedSet<K> s) Returns an unmodifiable type-specific sorted set backed by the given type-specific sorted set.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EMPTY_SET

public static final ReferenceSortedSets.EmptySet EMPTY_SET

An empty sorted set (immutable). It is serializable and cloneable.

The class of this objects represent an abstract empty set that is a subset of a (sorted) type-specific set.

Method Detail

singleton

public static <K> ReferenceSortedSet<K> singleton(K element)

Returns a type-specific immutable sorted set containing only the specified element. The returned sorted set is serializable and cloneable.

Parameters:

element - the only element of the returned sorted set.

Returns:

a type-specific immutable sorted set containing just element.

singleton

public static <K> ReferenceSortedSet<K> singleton(K element,
                                                  Comparator<? super K> comparator)

Returns a type-specific immutable sorted set containing only the specified element, and using a specified comparator. The returned sorted set is serializable and cloneable.

Parameters:

element - the only element of the returned sorted set.

comparator - the comparator to use in the returned sorted set.

Returns:

a type-specific immutable sorted set containing just element.

synchronize

public static <K> ReferenceSortedSet<K> synchronize(ReferenceSortedSet<K> s)

Returns a synchronized type-specific sorted set backed by the given type-specific sorted set.

Parameters:

s - the sorted set to be wrapped in a synchronized sorted set.

Returns:

a synchronized view of the specified sorted set.

See Also:

Collections.synchronizedSortedSet(SortedSet)

synchronize

public static <K> ReferenceSortedSet<K> synchronize(ReferenceSortedSet<K> s,
                                                    Object sync)

Returns a synchronized type-specific sorted set backed by the given type-specific sorted set, using an assigned object to synchronize.

Parameters:

s - the sorted set to be wrapped in a synchronized sorted set.

sync - an object that will be used to synchronize the access to the sorted set.

Returns:

a synchronized view of the specified sorted set.

See Also:

Collections.synchronizedSortedSet(SortedSet)

unmodifiable

public static <K> ReferenceSortedSet<K> unmodifiable(ReferenceSortedSet<K> s)

Returns an unmodifiable type-specific sorted set backed by the given type-specific sorted set.

Parameters:

s - the sorted set to be wrapped in an unmodifiable sorted set.

Returns:

an unmodifiable view of the specified sorted set.

See Also:

Collections.unmodifiableSortedSet(SortedSet)