public interface Reference2ReferenceMap<K,V> extends Reference2ReferenceFunction<K,V>, java.util.Map<K,V>
Map
; provides some additional methods that use polymorphism to avoid (un)boxing, and handling of a default return value.
Besides extending the corresponding type-specific function, this interface strengthens entrySet()
,
keySet()
and values()
. Maps returning entry sets of type Reference2ReferenceMap.FastEntrySet
support also fast iteration.
A submap or subset may or may not have an independent default return value (which however must be initialized to the default return value of the originator).
Map
Modifier and Type | Interface and Description |
---|---|
static interface |
Reference2ReferenceMap.Entry<K,V>
A type-specific
Map.Entry ; provides some additional methods
that use polymorphism to avoid (un)boxing. |
static interface |
Reference2ReferenceMap.FastEntrySet<K,V>
An entry set providing fast iteration.
|
Modifier and Type | Method and Description |
---|---|
ObjectSet<java.util.Map.Entry<K,V>> |
entrySet()
Returns a set view of the mappings contained in this map.
|
ReferenceSet<K> |
keySet()
Returns a set view of the keys contained in this map.
|
ObjectSet<Reference2ReferenceMap.Entry<K,V>> |
reference2ReferenceEntrySet()
Returns a type-specific set view of the mappings contained in this map.
|
ReferenceCollection<V> |
values()
Returns a set view of the values contained in this map.
|
defaultReturnValue, defaultReturnValue
ObjectSet<java.util.Map.Entry<K,V>> entrySet()
Note that this specification strengthens the one given in Map.entrySet()
.
ObjectSet<Reference2ReferenceMap.Entry<K,V>> reference2ReferenceEntrySet()
This method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen entrySet()
so that it returns an ObjectSet
of type-specific entries (the latter makes it possible to
access keys and values with type-specific methods).
entrySet()
ReferenceSet<K> keySet()
Note that this specification strengthens the one given in Map.keySet()
.
ReferenceCollection<V> values()
Note that this specification strengthens the one given in Map.values()
.