org.apache.jackrabbit.core.util

Class EmptyLinkedMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

org.apache.commons.collections4.map.AbstractHashedMap<K,V>

org.apache.commons.collections4.map.AbstractLinkedMap<K,V>

org.apache.commons.collections4.map.LinkedMap<K,V>

org.apache.jackrabbit.core.util.EmptyLinkedMap<K,V>

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>, org.apache.commons.collections4.Get<K,V>, org.apache.commons.collections4.IterableGet<K,V>, org.apache.commons.collections4.IterableMap<K,V>, org.apache.commons.collections4.OrderedMap<K,V>, org.apache.commons.collections4.Put<K,V>

public class EmptyLinkedMap<K,V>
extends org.apache.commons.collections4.map.LinkedMap<K,V>

EmptyLinkedMap implements an empty unmodifiable LinkedMap.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.commons.collections4.map.AbstractLinkedMap

org.apache.commons.collections4.map.AbstractLinkedMap.EntrySetIterator<K,V>, org.apache.commons.collections4.map.AbstractLinkedMap.KeySetIterator<K>, org.apache.commons.collections4.map.AbstractLinkedMap.LinkEntry<K,V>, org.apache.commons.collections4.map.AbstractLinkedMap.LinkIterator<K,V>, org.apache.commons.collections4.map.AbstractLinkedMap.LinkMapIterator<K,V>, org.apache.commons.collections4.map.AbstractLinkedMap.ValuesIterator<V>

Nested classes/interfaces inherited from class org.apache.commons.collections4.map.AbstractHashedMap

org.apache.commons.collections4.map.AbstractHashedMap.EntrySet<K,V>, org.apache.commons.collections4.map.AbstractHashedMap.HashEntry<K,V>, org.apache.commons.collections4.map.AbstractHashedMap.HashIterator<K,V>, org.apache.commons.collections4.map.AbstractHashedMap.HashMapIterator<K,V>, org.apache.commons.collections4.map.AbstractHashedMap.KeySet<K>, org.apache.commons.collections4.map.AbstractHashedMap.Values<V>

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.commons.collections4.map.LinkedMap	INSTANCE The only instance of this class.

Fields inherited from class org.apache.commons.collections4.map.AbstractHashedMap

DEFAULT_CAPACITY, DEFAULT_LOAD_FACTOR, DEFAULT_THRESHOLD, GETKEY_INVALID, GETVALUE_INVALID, MAXIMUM_CAPACITY, NO_NEXT_ENTRY, NO_PREVIOUS_ENTRY, NULL, REMOVE_INVALID, SETVALUE_INVALID

Method Summary

Modifier and Type	Method and Description
void	clear()
org.apache.commons.collections4.map.LinkedMap<K,V>	clone() Returns the single instance of this class.
Set<Map.Entry<K,V>>	entrySet() Returns an unmodifiable empty set.
Set<K>	keySet() Returns an unmodifiable empty set.
V	put(Object o, Object o1)
void	putAll(Map map)
V	remove(int i)
V	remove(Object o)
Collection<V>	values() Returns an unmodifiable empty collection.

Methods inherited from class org.apache.commons.collections4.map.LinkedMap

asList, get, getValue, indexOf

Methods inherited from class org.apache.commons.collections4.map.AbstractLinkedMap

addEntry, containsValue, createEntry, createEntrySetIterator, createKeySetIterator, createValuesIterator, entryAfter, entryBefore, firstKey, getEntry, getEntry, init, lastKey, mapIterator, nextKey, previousKey, removeEntry

Methods inherited from class org.apache.commons.collections4.map.AbstractHashedMap

addMapping, calculateNewCapacity, calculateThreshold, checkCapacity, containsKey, convertKey, destroyEntry, doReadObject, doWriteObject, ensureCapacity, entryHashCode, entryKey, entryNext, entryValue, equals, get, hash, hashCode, hashIndex, isEmpty, isEqualKey, isEqualValue, removeMapping, reuseEntry, size, toString, updateEntry

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, equals, forEach, get, getOrDefault, hashCode, isEmpty, merge, putIfAbsent, remove, replace, replace, replaceAll, size

Methods inherited from interface org.apache.commons.collections4.Get

containsKey, get, isEmpty, size

Field Detail

INSTANCE

public static final org.apache.commons.collections4.map.LinkedMap INSTANCE

The only instance of this class.

Method Detail

remove

public V remove(int i)

Overrides:

remove in class org.apache.commons.collections4.map.LinkedMap<K,V>

Throws:

UnsupportedOperationException - always.

clear

public void clear()

Specified by:

clear in interface Map<K,V>

Specified by:

clear in interface org.apache.commons.collections4.Put<K,V>

Overrides:

clear in class org.apache.commons.collections4.map.AbstractLinkedMap<K,V>

Throws:

UnsupportedOperationException - always.

put

public V put(Object o,
             Object o1)

Specified by:

put in interface Map<K,V>

Specified by:

put in interface org.apache.commons.collections4.Put<K,V>

Overrides:

put in class org.apache.commons.collections4.map.AbstractHashedMap<K,V>

Throws:

UnsupportedOperationException - always.

putAll

public void putAll(Map map)

Specified by:

putAll in interface Map<K,V>

Specified by:

putAll in interface org.apache.commons.collections4.Put<K,V>

Overrides:

putAll in class org.apache.commons.collections4.map.AbstractHashedMap<K,V>

Throws:

UnsupportedOperationException - always.

remove

public V remove(Object o)

Specified by:

remove in interface Map<K,V>

Specified by:

remove in interface org.apache.commons.collections4.Get<K,V>

Overrides:

remove in class org.apache.commons.collections4.map.AbstractHashedMap<K,V>

Throws:

UnsupportedOperationException - always.

entrySet

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

Returns an unmodifiable empty set.

Specified by:

entrySet in interface Map<K,V>

Specified by:

entrySet in interface org.apache.commons.collections4.Get<K,V>

Overrides:

entrySet in class org.apache.commons.collections4.map.AbstractHashedMap<K,V>

Returns:

an unmodifiable empty set.

keySet

public Set<K> keySet()

Returns an unmodifiable empty set.

Specified by:

keySet in interface Map<K,V>

Specified by:

keySet in interface org.apache.commons.collections4.Get<K,V>

Overrides:

keySet in class org.apache.commons.collections4.map.AbstractHashedMap<K,V>

Returns:

an unmodifiable empty set.

values

public Collection<V> values()

Returns an unmodifiable empty collection.

Specified by:

values in interface Map<K,V>

Specified by:

values in interface org.apache.commons.collections4.Get<K,V>

Overrides:

values in class org.apache.commons.collections4.map.AbstractHashedMap<K,V>

Returns:

an unmodifiable empty collection.

clone

public org.apache.commons.collections4.map.LinkedMap<K,V> clone()

Returns the single instance of this class.

Overrides:

clone in class org.apache.commons.collections4.map.LinkedMap<K,V>

Returns:

INSTANCE.