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:
- Map<K,V>
public class MapBasedDictionary<K,V>
- extends Dictionary<K,V>
- implements 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.
- Author:
- Costin Leau
- See Also:
Map,
Dictionary
| Nested classes/interfaces inherited from interface java.util.Map |
Map.Entry<K,V> |
MapBasedDictionary
public MapBasedDictionary(Map<K,V> map)
MapBasedDictionary
public MapBasedDictionary()
- Default constructor.
MapBasedDictionary
public MapBasedDictionary(int initialCapacity)
MapBasedDictionary
public MapBasedDictionary(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(Map<K,V> map,
Dictionary<? extends K,? extends V> dictionary)
clear
public void clear()
- Specified by:
clear in interface Map<K,V>
containsKey
public boolean containsKey(Object key)
- Specified by:
containsKey in interface Map<K,V>
containsValue
public boolean containsValue(Object value)
- Specified by:
containsValue in interface Map<K,V>
entrySet
public Set<Map.Entry<K,V>> entrySet()
- Specified by:
entrySet in interface Map<K,V>
get
public V get(Object key)
- Specified by:
get in interface Map<K,V>- Specified by:
get in class Dictionary<K,V>
isEmpty
public boolean isEmpty()
- Specified by:
isEmpty in interface Map<K,V>- Specified by:
isEmpty in class Dictionary<K,V>
keySet
public Set<K> keySet()
- Specified by:
keySet in interface Map<K,V>
put
public V put(K key,
V value)
- Specified by:
put in interface Map<K,V>- Specified by:
put in class Dictionary<K,V>
putAll
public void putAll(Map<? extends K,? extends V> t)
- Specified by:
putAll in interface Map<K,V>
putAll
public <T extends K> void putAll(Dictionary<T,? extends V> dictionary)
remove
public V remove(Object key)
- Specified by:
remove in interface Map<K,V>- Specified by:
remove in class Dictionary<K,V>
size
public int size()
- Specified by:
size in interface Map<K,V>- Specified by:
size in class Dictionary<K,V>
values
public Collection<V> values()
- Specified by:
values in interface Map<K,V>
elements
public Enumeration<V> elements()
- Specified by:
elements in class Dictionary<K,V>
keys
public Enumeration<K> keys()
- Specified by:
keys in class Dictionary<K,V>
toString
public String toString()
- Overrides:
toString in class Object
equals
public boolean equals(Object obj)
- Specified by:
equals in interface Map<K,V>- Overrides:
equals in class Object
hashCode
public int hashCode()
- Specified by:
hashCode in interface Map<K,V>- Overrides:
hashCode in class Object
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