org.apache.jackrabbit.core.util
Class EmptyLinkedMap

java.lang.Object
  java.util.AbstractMap
      org.apache.commons.collections.map.AbstractHashedMap
          org.apache.commons.collections.map.AbstractLinkedMap
              org.apache.commons.collections.map.LinkedMap
                  org.apache.jackrabbit.core.util.EmptyLinkedMap

All Implemented Interfaces:

Serializable, Cloneable, Map, org.apache.commons.collections.IterableMap, org.apache.commons.collections.OrderedMap

public class EmptyLinkedMap
extends org.apache.commons.collections.map.LinkedMap

EmptyLinkedMap implements an empty unmodifiable LinkedMap.

See Also:

Serialized Form

Nested Class Summary

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

org.apache.commons.collections.map.AbstractLinkedMap.EntrySetIterator, org.apache.commons.collections.map.AbstractLinkedMap.KeySetIterator, org.apache.commons.collections.map.AbstractLinkedMap.LinkEntry, org.apache.commons.collections.map.AbstractLinkedMap.LinkIterator, org.apache.commons.collections.map.AbstractLinkedMap.LinkMapIterator, org.apache.commons.collections.map.AbstractLinkedMap.ValuesIterator

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

org.apache.commons.collections.map.AbstractHashedMap.EntrySet, org.apache.commons.collections.map.AbstractHashedMap.HashEntry, org.apache.commons.collections.map.AbstractHashedMap.HashIterator, org.apache.commons.collections.map.AbstractHashedMap.HashMapIterator, org.apache.commons.collections.map.AbstractHashedMap.KeySet, org.apache.commons.collections.map.AbstractHashedMap.Values

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

static org.apache.commons.collections.map.LinkedMap

INSTANCE The only instance of this class.

Fields inherited from class org.apache.commons.collections.map.AbstractLinkedMap

header

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

data, DEFAULT_CAPACITY, DEFAULT_LOAD_FACTOR, DEFAULT_THRESHOLD, entrySet, GETKEY_INVALID, GETVALUE_INVALID, keySet, loadFactor, MAXIMUM_CAPACITY, modCount, NO_NEXT_ENTRY, NO_PREVIOUS_ENTRY, NULL, REMOVE_INVALID, SETVALUE_INVALID, size, threshold, values

Method Summary

void	clear()
Object	clone() Returns the single instance of this class.
Set	entrySet() Returns an unmodifiable empty set.
Set	keySet() Returns an unmodifiable empty set.
Object	put(Object o, Object o1)
void	putAll(Map map)
Object	remove(int i)
Object	remove(Object o)
Collection	values() Returns an unmodifiable empty collection.

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

asList, get, getValue, indexOf

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

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

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

addMapping, calculateNewCapacity, calculateThreshold, checkCapacity, containsKey, convertKey, destroyEntry, doReadObject, doWriteObject, ensureCapacity, entryHashCode, entryKey, entryNext, entryValue, equals, get, getEntry, 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

containsKey, equals, get, hashCode, isEmpty, size

Field Detail

INSTANCE

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

The only instance of this class.

Method Detail

remove

public Object remove(int i)

Overrides:

remove in class org.apache.commons.collections.map.LinkedMap

Throws:

UnsupportedOperationException - always.

clear

public void clear()

Specified by:

clear in interface Map

Overrides:

clear in class org.apache.commons.collections.map.AbstractLinkedMap

Throws:

UnsupportedOperationException - always.

put

public Object put(Object o,
                  Object o1)

Specified by:

put in interface Map

Overrides:

put in class org.apache.commons.collections.map.AbstractHashedMap

Throws:

UnsupportedOperationException - always.

putAll

public void putAll(Map map)

Specified by:

putAll in interface Map

Overrides:

putAll in class org.apache.commons.collections.map.AbstractHashedMap

Throws:

UnsupportedOperationException - always.

remove

public Object remove(Object o)

Specified by:

remove in interface Map

Overrides:

remove in class org.apache.commons.collections.map.AbstractHashedMap

Throws:

UnsupportedOperationException - always.

entrySet

public Set entrySet()

Returns an unmodifiable empty set.

Specified by:

entrySet in interface Map

Overrides:

entrySet in class org.apache.commons.collections.map.AbstractHashedMap

Returns:

an unmodifiable empty set.

keySet

public Set keySet()

Returns an unmodifiable empty set.

Specified by:

keySet in interface Map

Overrides:

keySet in class org.apache.commons.collections.map.AbstractHashedMap

Returns:

an unmodifiable empty set.

values

public Collection values()

Returns an unmodifiable empty collection.

Specified by:

values in interface Map

Overrides:

values in class org.apache.commons.collections.map.AbstractHashedMap

Returns:

an unmodifiable empty collection.

clone

public Object clone()

Returns the single instance of this class.

Overrides:

clone in class org.apache.commons.collections.map.LinkedMap

Returns:

INSTANCE.