org.eclipse.gemini.blueprint.util.internal

Class MapBasedDictionary<K,V>

java.lang.Object

java.util.Dictionary<K,V>

org.eclipse.gemini.blueprint.util.internal.MapBasedDictionary<K,V>

All Implemented Interfaces:

java.util.Map<K,V>

public class MapBasedDictionary<K,V>
extends java.util.Dictionary<K,V>
implements java.util.Map<K,V>

Dictionary implementation backed by a map instance. While the JDK provides a Dictionary implementation through Hashtable, the class itself is always synchronized and does not maintain the internal order.

This simple wrapper, accepts any type of Map as backing storage allowing more options in choosing the appropriate implementation. By default, a LinkedHashMap is used, if no Map is specified.

This implementation will enforce the Dictionary behaviour over the map when it comes to handling null values. As opposed to a Map, the Dictionary always throws NullPointerException if a given argument is null.

See Also:

Map, Dictionary

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	MapBasedDictionary.IteratorBasedEnumeration<E> Enumeration wrapper around an Iterator.

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

java.util.Map.Entry<K,V>

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<K,V>	map

Constructor Summary

Constructors

Constructor and Description
MapBasedDictionary() Default constructor.
MapBasedDictionary(java.util.Dictionary<? extends K,? extends V> dictionary) Constructor for dealing with existing Dictionary.
MapBasedDictionary(int initialCapacity)
MapBasedDictionary(java.util.Map<K,V> map)
MapBasedDictionary(java.util.Map<K,V> map, java.util.Dictionary<? extends K,? extends V> dictionary)

Method Summary

Modifier and Type	Method and Description
void	clear()
boolean	containsKey(java.lang.Object key)
boolean	containsValue(java.lang.Object value)
java.util.Enumeration<V>	elements()
java.util.Set<java.util.Map.Entry<K,V>>	entrySet()
boolean	equals(java.lang.Object obj)
V	get(java.lang.Object key)
int	hashCode()
boolean	isEmpty()
java.util.Enumeration<K>	keys()
java.util.Set<K>	keySet()
V	put(K key, V value)
<T extends K> void	putAll(java.util.Dictionary<T,? extends V> dictionary)
void	putAll(java.util.Map<? extends K,? extends V> t)
V	remove(java.lang.Object key)
int	size()
java.lang.String	toString()
java.util.Collection<V>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Field Detail

map

private java.util.Map<K,V> map

Constructor Detail

MapBasedDictionary

public MapBasedDictionary(java.util.Map<K,V> map)

MapBasedDictionary

public MapBasedDictionary()

Default constructor.

MapBasedDictionary

public MapBasedDictionary(int initialCapacity)

MapBasedDictionary

public MapBasedDictionary(java.util.Dictionary<? extends K,? extends V> dictionary)

Constructor for dealing with existing Dictionary. Will copy the content into the inner Map.

Parameters:

dictionary -

MapBasedDictionary

public MapBasedDictionary(java.util.Map<K,V> map,
                          java.util.Dictionary<? extends K,? extends V> dictionary)

Method Detail

clear

public void clear()

Specified by:

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

containsKey

public boolean containsKey(java.lang.Object key)

Specified by:

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

containsValue

public boolean containsValue(java.lang.Object value)

Specified by:

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

entrySet

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

Specified by:

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

get

public V get(java.lang.Object key)

Specified by:

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

Specified by:

get in class java.util.Dictionary<K,V>

isEmpty

public boolean isEmpty()

Specified by:

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

Specified by:

isEmpty in class java.util.Dictionary<K,V>

keySet

public java.util.Set<K> keySet()

Specified by:

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

put

public V put(K key,
             V value)

Specified by:

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

Specified by:

put in class java.util.Dictionary<K,V>

putAll

public void putAll(java.util.Map<? extends K,? extends V> t)

Specified by:

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

putAll

public <T extends K> void putAll(java.util.Dictionary<T,? extends V> dictionary)

remove

public V remove(java.lang.Object key)

Specified by:

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

Specified by:

remove in class java.util.Dictionary<K,V>

size

public int size()

Specified by:

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

Specified by:

size in class java.util.Dictionary<K,V>

values

public java.util.Collection<V> values()

Specified by:

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

elements

public java.util.Enumeration<V> elements()

Specified by:

elements in class java.util.Dictionary<K,V>

keys

public java.util.Enumeration<K> keys()

Specified by:

keys in class java.util.Dictionary<K,V>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Specified by:

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

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Specified by:

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

Overrides:

hashCode in class java.lang.Object