public static class Object2ReferenceMaps.UnmodifiableMap<K,V> extends Object2ReferenceFunctions.UnmodifiableFunction<K,V> implements Object2ReferenceMap<K,V>, Serializable
Object2ReferenceMap.Entry<K,V>, Object2ReferenceMap.FastEntrySet<K,V>
Modifier and Type | Method and Description |
---|---|
void |
clear()
Removes all associations from this function (optional operation).
|
boolean |
containsKey(Object k)
Returns true if this function contains a mapping for the specified key.
|
boolean |
containsValue(Object v) |
V |
defaultReturnValue()
Gets the default return value.
|
void |
defaultReturnValue(V defRetValue)
Sets the default return value.
|
ObjectSet<Map.Entry<K,V>> |
entrySet()
Returns a set view of the mappings contained in this map.
|
V |
get(Object k)
Returns the value associated by this function to the specified key.
|
boolean |
isEmpty() |
ObjectSet<K> |
keySet()
Returns a set view of the keys contained in this map.
|
ObjectSet<Object2ReferenceMap.Entry<K,V>> |
object2ReferenceEntrySet()
Returns a type-specific set view of the mappings contained in this map.
|
V |
put(K k,
V v)
Associates the specified value with the specified key in this function (optional operation).
|
void |
putAll(Map<? extends K,? extends V> m) |
V |
remove(Object k)
Removes this key and the associated value from this function if it is present (optional operation).
|
int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
|
String |
toString() |
ReferenceCollection<V> |
values()
Returns a set view of the values contained in this map.
|
public int size()
Function
Most function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible.
public boolean containsKey(Object k)
Function
Note that for some kind of functions (e.g., hashes) this method will always return true.
containsKey
in interface Function<K,V>
containsKey
in interface Map<K,V>
containsKey
in class Object2ReferenceFunctions.UnmodifiableFunction<K,V>
k
- the key.key
.Map.containsKey(Object)
public boolean containsValue(Object v)
containsValue
in interface Map<K,V>
public V defaultReturnValue()
Object2ReferenceFunction
defaultReturnValue
in interface Object2ReferenceFunction<K,V>
defaultReturnValue
in class Object2ReferenceFunctions.UnmodifiableFunction<K,V>
public void defaultReturnValue(V defRetValue)
Object2ReferenceFunction
get()
, put()
and remove()
to
denote that the map does not contain the specified key. It must be
0/false
/null
by default.defaultReturnValue
in interface Object2ReferenceFunction<K,V>
defaultReturnValue
in class Object2ReferenceFunctions.UnmodifiableFunction<K,V>
defRetValue
- the new default return value.Object2ReferenceFunction.defaultReturnValue()
public V put(K k, V v)
Function
put
in interface Function<K,V>
put
in interface Map<K,V>
put
in class Object2ReferenceFunctions.UnmodifiableFunction<K,V>
k
- the key.v
- the value.null
if no value was present for the given key.Map.put(Object,Object)
public ObjectSet<Object2ReferenceMap.Entry<K,V>> object2ReferenceEntrySet()
Object2ReferenceMap
This method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Object2ReferenceMap.entrySet()
so that it returns an ObjectSet
of objects of type Map.Entry
(the latter makes it possible to
access keys and values with type-specific methods).
object2ReferenceEntrySet
in interface Object2ReferenceMap<K,V>
Object2ReferenceMap.entrySet()
public ObjectSet<K> keySet()
Object2ReferenceMap
Note that this specification strengthens the one given in Map.keySet()
.
keySet
in interface Object2ReferenceMap<K,V>
keySet
in interface Map<K,V>
Map.keySet()
public ReferenceCollection<V> values()
Object2ReferenceMap
Note that this specification strengthens the one given in Map.values()
.
values
in interface Object2ReferenceMap<K,V>
values
in interface Map<K,V>
Map.values()
public void clear()
Function
public String toString()
toString
in class Object2ReferenceFunctions.UnmodifiableFunction<K,V>
public V remove(Object k)
Function
public V get(Object k)
Function
public ObjectSet<Map.Entry<K,V>> entrySet()
Object2ReferenceMap
Note that this specification strengthens the one given in Map.entrySet()
.
entrySet
in interface Object2ReferenceMap<K,V>
entrySet
in interface Map<K,V>
Map.entrySet()