Package it.unimi.dsi.fastutil.objects

Class ReferenceSortedSets

java.lang.Object

it.unimi.dsi.fastutil.objects.ReferenceSortedSets

public final 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

Nested Classes

Modifier and Type	Class	Description
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

Fields

Modifier and Type	Field	Description
static final ReferenceSortedSets.EmptySet	EMPTY_SET	An empty sorted set (immutable).

Method Summary

Modifier and Type	Method	Description
static <K> ReferenceSet<K>	emptySet()	Returns an empty sorted set (immutable).
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 Details

EMPTY_SET

public static final ReferenceSortedSets.EmptySet EMPTY_SET

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

Method Details

emptySet

public static <K> ReferenceSet<K> emptySet()

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

This method provides a typesafe access to EMPTY_SET.

Returns:

an empty sorted set (immutable).

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)