it.unimi.dsi.fastutil.objects

Class Reference2ObjectSortedMaps.EmptySortedMap<K,V>

java.lang.Object

it.unimi.dsi.fastutil.objects.AbstractReference2ObjectFunction<K,V>

it.unimi.dsi.fastutil.objects.Reference2ObjectFunctions.EmptyFunction<K,V>

it.unimi.dsi.fastutil.objects.Reference2ObjectMaps.EmptyMap<K,V>

it.unimi.dsi.fastutil.objects.Reference2ObjectSortedMaps.EmptySortedMap<K,V>

All Implemented Interfaces:

Reference2ObjectFunction<K,V>, Reference2ObjectMap<K,V>, Reference2ObjectSortedMap<K,V>, java.io.Serializable, java.lang.Cloneable, java.util.function.Function<K,V>, java.util.Map<K,V>, java.util.SortedMap<K,V>

Enclosing class:

Reference2ObjectSortedMaps

public static class Reference2ObjectSortedMaps.EmptySortedMap<K,V>
extends Reference2ObjectMaps.EmptyMap<K,V>
implements Reference2ObjectSortedMap<K,V>, java.io.Serializable, java.lang.Cloneable

An immutable class representing an empty type-specific sorted map.

This class may be useful to implement your own in case you subclass a type-specific sorted map.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.objects.Reference2ObjectSortedMap

Reference2ObjectSortedMap.FastSortedEntrySet<K,V>

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.objects.Reference2ObjectMap

Reference2ObjectMap.Entry<K,V>, Reference2ObjectMap.FastEntrySet<K,V>

Method Summary

Modifier and Type	Method and Description
java.util.Comparator<? super K>	comparator() Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
ObjectSortedSet<java.util.Map.Entry<K,V>>	entrySet() Returns a sorted-set view of the mappings contained in this map.
K	firstKey()
Reference2ObjectSortedMap<K,V>	headMap(K to) Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
ReferenceSortedSet<K>	keySet() Note that this specification strengthens the one given in Map.keySet().
K	lastKey()
ObjectSortedSet<Reference2ObjectMap.Entry<K,V>>	reference2ObjectEntrySet() Returns a type-specific set view of the mappings contained in this map.
Reference2ObjectSortedMap<K,V>	subMap(K from, K to) Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.
Reference2ObjectSortedMap<K,V>	tailMap(K from) Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.

Methods inherited from class it.unimi.dsi.fastutil.objects.Reference2ObjectMaps.EmptyMap

clone, containsValue, equals, hashCode, isEmpty, putAll, toString, values

Methods inherited from class it.unimi.dsi.fastutil.objects.Reference2ObjectFunctions.EmptyFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, get, size

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2ObjectSortedMap

values

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2ObjectMap

clear, containsKey, defaultReturnValue, defaultReturnValue, put, remove, size

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2ObjectFunction

get

Methods inherited from interface it.unimi.dsi.fastutil.Function

apply

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsValue, equals, forEach, get, getOrDefault, hashCode, isEmpty, merge, putAll, putIfAbsent, remove, replace, replace, replaceAll

Method Detail

comparator

public java.util.Comparator<? super K> comparator()

Description copied from interface: Reference2ObjectSortedMap

Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.

Note that this specification strengthens the one given in SortedMap.comparator().

Specified by:

comparator in interface Reference2ObjectSortedMap<K,V>

Specified by:

comparator in interface java.util.SortedMap<K,V>

See Also:

SortedMap.comparator()

reference2ObjectEntrySet

public ObjectSortedSet<Reference2ObjectMap.Entry<K,V>> reference2ObjectEntrySet()

Description copied from interface: Reference2ObjectMap

Returns a type-specific set view of the mappings contained in this map.

This method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Map.entrySet() so that it returns an ObjectSet of type-specific entries (the latter makes it possible to access keys and values with type-specific methods).

Specified by:

reference2ObjectEntrySet in interface Reference2ObjectMap<K,V>

Specified by:

reference2ObjectEntrySet in interface Reference2ObjectSortedMap<K,V>

Overrides:

reference2ObjectEntrySet in class Reference2ObjectMaps.EmptyMap<K,V>

Returns:

a type-specific set view of the mappings contained in this map.

See Also:

Map.entrySet()

entrySet

public ObjectSortedSet<java.util.Map.Entry<K,V>> entrySet()

Returns a sorted-set view of the mappings contained in this map.

Note that this specification strengthens the one given in the corresponding type-specific unsorted map.

Specified by:

entrySet in interface Reference2ObjectMap<K,V>

Specified by:

entrySet in interface Reference2ObjectSortedMap<K,V>

Specified by:

entrySet in interface java.util.Map<K,V>

Specified by:

entrySet in interface java.util.SortedMap<K,V>

Returns:

a sorted-set view of the mappings contained in this map.

See Also:

Map.entrySet()

keySet

public ReferenceSortedSet<K> keySet()

Description copied from interface: Reference2ObjectMap

Note that this specification strengthens the one given in Map.keySet().

Specified by:

keySet in interface Reference2ObjectMap<K,V>

Specified by:

keySet in interface Reference2ObjectSortedMap<K,V>

Specified by:

keySet in interface java.util.Map<K,V>

Specified by:

keySet in interface java.util.SortedMap<K,V>

Overrides:

keySet in class Reference2ObjectMaps.EmptyMap<K,V>

Returns:

a set view of the keys contained in this map.

See Also:

Map.keySet()

subMap

public Reference2ObjectSortedMap<K,V> subMap(K from,
                                             K to)

Description copied from interface: Reference2ObjectSortedMap

Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.

Note that this specification strengthens the one given in SortedMap.subMap(Object,Object).

Specified by:

subMap in interface Reference2ObjectSortedMap<K,V>

Specified by:

subMap in interface java.util.SortedMap<K,V>

See Also:

SortedMap.subMap(Object,Object)

headMap

public Reference2ObjectSortedMap<K,V> headMap(K to)

Description copied from interface: Reference2ObjectSortedMap

Returns a view of the portion of this sorted map whose keys are strictly less than toKey.

Note that this specification strengthens the one given in SortedMap.headMap(Object).

Specified by:

headMap in interface Reference2ObjectSortedMap<K,V>

Specified by:

headMap in interface java.util.SortedMap<K,V>

See Also:

SortedMap.headMap(Object)

tailMap

public Reference2ObjectSortedMap<K,V> tailMap(K from)

Description copied from interface: Reference2ObjectSortedMap

Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.

Note that this specification strengthens the one given in SortedMap.tailMap(Object).

Specified by:

tailMap in interface Reference2ObjectSortedMap<K,V>

Specified by:

tailMap in interface java.util.SortedMap<K,V>

See Also:

SortedMap.tailMap(Object)

firstKey

public K firstKey()

Specified by:

firstKey in interface java.util.SortedMap<K,V>

lastKey

public K lastKey()

Specified by:

lastKey in interface java.util.SortedMap<K,V>