Package it.unimi.dsi.fastutil.objects

Class Object2ReferenceSortedMaps.EmptySortedMap<K,V>

java.lang.Object

it.unimi.dsi.fastutil.objects.AbstractObject2ReferenceFunction<K,V>

it.unimi.dsi.fastutil.objects.Object2ReferenceFunctions.EmptyFunction<K,V>

it.unimi.dsi.fastutil.objects.Object2ReferenceMaps.EmptyMap<K,V>

it.unimi.dsi.fastutil.objects.Object2ReferenceSortedMaps.EmptySortedMap<K,V>

All Implemented Interfaces:

Function<K,V>, Object2ReferenceFunction<K,V>, Object2ReferenceMap<K,V>, Object2ReferenceSortedMap<K,V>, Serializable, Cloneable, Function<K,V>, Map<K,V>, SequencedMap<K,V>, SortedMap<K,V>

Enclosing class:

Object2ReferenceSortedMaps

public static class Object2ReferenceSortedMaps.EmptySortedMap<K,V>
extends Object2ReferenceMaps.EmptyMap<K,V>
implements Object2ReferenceSortedMap<K,V>, Serializable, 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 java.util.Map

Map.Entry<K,V>

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.objects.Object2ReferenceMap

Object2ReferenceMap.Entry<K,V>, Object2ReferenceMap.FastEntrySet<K,V>

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.objects.Object2ReferenceSortedMap

Object2ReferenceSortedMap.FastSortedEntrySet<K,V>

Method Summary

Modifier and Type	Method	Description
Comparator<? super K>	comparator()	Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
ObjectSortedSet<Map.Entry<K,V>>	entrySet()	Returns a sorted-set view of the mappings contained in this map.
K	firstKey()
Object2ReferenceSortedMap<K,V>	headMap(K to)	Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
ObjectSortedSet<K>	keySet()
K	lastKey()
ObjectSortedSet<Object2ReferenceMap.Entry<K,V>>	object2ReferenceEntrySet()	Returns a type-specific set view of the mappings contained in this map.
Object2ReferenceSortedMap<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.
Object2ReferenceSortedMap<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.Object2ReferenceMaps.EmptyMap

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

Methods inherited from class it.unimi.dsi.fastutil.objects.Object2ReferenceFunctions.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.Function

apply

Methods inherited from interface java.util.function.Function

andThen, compose

Methods inherited from interface java.util.Map

clear, computeIfAbsent, containsKey, containsValue, equals, get, getOrDefault, hashCode, isEmpty, put, putAll, remove, replaceAll, size

Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2ReferenceFunction

andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, get

Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2ReferenceMap

clear, compute, computeIfAbsent, computeIfPresent, computeReferenceIfAbsentPartial, containsKey, defaultReturnValue, defaultReturnValue, forEach, getOrDefault, merge, put, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2ReferenceSortedMap

values

Methods inherited from interface java.util.SequencedMap

firstEntry, lastEntry, pollFirstEntry, pollLastEntry, sequencedEntrySet, sequencedKeySet, sequencedValues

Methods inherited from interface java.util.SortedMap

putFirst, putLast, reversed

Method Details

comparator

public Comparator<? super K> comparator()

Description copied from interface: Object2ReferenceSortedMap

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

Specified by:

comparator in interface Object2ReferenceSortedMap<K,V>

Specified by:

comparator in interface SortedMap<K,V>

See Also:

• SortedMap.comparator()

object2ReferenceEntrySet

public ObjectSortedSet<Object2ReferenceMap.Entry<K,V>> object2ReferenceEntrySet()

Description copied from interface: Object2ReferenceMap

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:

object2ReferenceEntrySet in interface Object2ReferenceMap<K,V>

Specified by:

object2ReferenceEntrySet in interface Object2ReferenceSortedMap<K,V>

Overrides:

object2ReferenceEntrySet in class Object2ReferenceMaps.EmptyMap<K,V>

Returns:

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

See Also:

• Map.entrySet()

entrySet

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

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

Specified by:

entrySet in interface Map<K,V>

Specified by:

entrySet in interface Object2ReferenceMap<K,V>

Specified by:

entrySet in interface Object2ReferenceSortedMap<K,V>

Specified by:

entrySet in interface SortedMap<K,V>

Returns:

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

See Also:

• Map.entrySet()

keySet

public ObjectSortedSet<K> keySet()

Description copied from interface: Object2ReferenceMap

Specified by:

keySet in interface Map<K,V>

Specified by:

keySet in interface Object2ReferenceMap<K,V>

Specified by:

keySet in interface Object2ReferenceSortedMap<K,V>

Specified by:

keySet in interface SortedMap<K,V>

Overrides:

keySet in class Object2ReferenceMaps.EmptyMap<K,V>

Returns:

a set view of the keys contained in this map.

See Also:

• Map.keySet()

subMap

public Object2ReferenceSortedMap<K,V> subMap(K from,
 K to)

Description copied from interface: Object2ReferenceSortedMap

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

Specified by:

subMap in interface Object2ReferenceSortedMap<K,V>

Specified by:

subMap in interface SortedMap<K,V>

See Also:

• SortedMap.subMap(Object,Object)

headMap

public Object2ReferenceSortedMap<K,V> headMap(K to)

Description copied from interface: Object2ReferenceSortedMap

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

Specified by:

headMap in interface Object2ReferenceSortedMap<K,V>

Specified by:

headMap in interface SortedMap<K,V>

See Also:

• SortedMap.headMap(Object)

tailMap

public Object2ReferenceSortedMap<K,V> tailMap(K from)

Description copied from interface: Object2ReferenceSortedMap

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

Specified by:

tailMap in interface Object2ReferenceSortedMap<K,V>

Specified by:

tailMap in interface SortedMap<K,V>

See Also:

• SortedMap.tailMap(Object)

firstKey

public K firstKey()

Specified by:

firstKey in interface SortedMap<K,V>

lastKey

public K lastKey()

Specified by:

lastKey in interface SortedMap<K,V>