|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||
java.lang.Objectorg.apache.commons.collections15.map.AbstractMapDecorator<K,V>
org.apache.commons.collections15.bidimap.AbstractBidiMapDecorator<K,V>
public abstract class AbstractBidiMapDecorator<K,V>
Provides a base decorator that enables additional functionality to be added to a BidiMap via decoration.
Methods are forwarded directly to the decorated map. This implementation does not perform any special processing with the map views. Instead it simply returns the set/collection from the wrapped map. This may be undesirable, for example if you are trying to write a validating implementation it would provide a loophole around the validation. But, you might want that loophole, so this class is kept simple.
| Nested Class Summary |
|---|
| Nested classes/interfaces inherited from interface java.util.Map |
|---|
Map.Entry<K,V> |
| Field Summary |
|---|
| Fields inherited from class org.apache.commons.collections15.map.AbstractMapDecorator |
|---|
map |
| Constructor Summary | |
|---|---|
protected |
AbstractBidiMapDecorator(BidiMap<K,V> map)
Constructor that wraps (not copies). |
| Method Summary | |
|---|---|
protected BidiMap<K,V> |
getBidiMap()
Gets the map being decorated. |
K |
getKey(Object value)
Gets the key that is currently mapped to the specified value. |
BidiMap<V,K> |
inverseBidiMap()
Gets a view of this map where the keys and values are reversed. |
MapIterator<K,V> |
mapIterator()
Obtains a MapIterator over the map. |
K |
removeValue(Object value)
Removes the key-value pair that is currently mapped to the specified value (optional operation). |
Set<V> |
values()
Returns a set view of the values contained in this BidiMap. |
| Methods inherited from class org.apache.commons.collections15.map.AbstractMapDecorator |
|---|
clear, containsKey, containsValue, entrySet, equals, get, getMap, hashCode, isEmpty, keySet, put, putAll, remove, size, toString |
| Methods inherited from class java.lang.Object |
|---|
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
| Methods inherited from interface org.apache.commons.collections15.BidiMap |
|---|
put |
| Methods inherited from interface java.util.Map |
|---|
clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, putAll, remove, size |
| Constructor Detail |
|---|
protected AbstractBidiMapDecorator(BidiMap<K,V> map)
map - the map to decorate, must not be null
IllegalArgumentException - if the collection is null| Method Detail |
|---|
protected BidiMap<K,V> getBidiMap()
public MapIterator<K,V> mapIterator()
BidiMapMapIterator over the map.
A map iterator is an efficient way of iterating over maps.
It does not require that the map is stored using Map Entry objects
which can increase performance.
BidiMap map = new DualHashBidiMap();
MapIterator it = map.mapIterator();
while (it.hasNext()) {
Object key = it.next();
Object value = it.getValue();
it.setValue("newValue");
}
mapIterator in interface BidiMap<K,V>mapIterator in interface IterableMap<K,V>public K getKey(Object value)
BidiMapnull is returned.
Implementations should seek to make this method perform equally as well
as get(Object).
getKey in interface BidiMap<K,V>value - the value to find the key for
null if not foundpublic K removeValue(Object value)
BidiMapnull is returned.
Implementations should seek to make this method perform equally as well
as remove(Object).
removeValue in interface BidiMap<K,V>value - the value to find the key-value pair for
null if nothing removedpublic BidiMap<V,K> inverseBidiMap()
BidiMapMap.
Implementations should seek to avoid creating a new object every time this
method is called. See AbstractMap.values() etc. Calling this
method on the inverse map should return the original.
inverseBidiMap in interface BidiMap<K,V>public Set<V> values()
BidiMap
values in interface Map<K,V>values in interface BidiMap<K,V>values in class AbstractMapDecorator<K,V>
|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||