public static class Reference2ObjectFunctions.SynchronizedFunction<K,V> extends java.lang.Object implements Reference2ObjectFunction<K,V>, java.io.Serializable
Modifier and Type | Method and Description |
---|---|
V |
apply(K key)
This is equivalent to calling
Function.get(Object) . |
void |
clear()
Removes all associations from this function (optional operation).
|
boolean |
containsKey(java.lang.Object k)
Returns true if this function contains a mapping for the specified key.
|
V |
defaultReturnValue()
Gets the default return value.
|
void |
defaultReturnValue(V defRetValue)
Sets the default return value (optional operation).
|
boolean |
equals(java.lang.Object o) |
V |
get(java.lang.Object k)
Returns the value to which the given key is mapped.
|
V |
getOrDefault(java.lang.Object k,
V defaultValue)
Returns the value associated by this function to the specified key, or give the specified
value if not present.
|
int |
hashCode() |
V |
put(K k,
V v)
Adds a pair to the map (optional operation).
|
V |
remove(java.lang.Object k)
Removes the mapping with the given key (optional operation).
|
int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
|
java.lang.String |
toString() |
andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort
public V apply(K key)
Function
Function.get(Object)
.apply
in interface java.util.function.Function<K,V>
key
- Function.apply(Object)
,
Function.get(Object)
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. This default implementation, in particular, returns -1.
public V defaultReturnValue()
Reference2ObjectFunction
This default implementation just return the default null value
of the type (null
for objects, 0 for scalars, false for Booleans).
defaultReturnValue
in interface Reference2ObjectFunction<K,V>
public void defaultReturnValue(V defRetValue)
Reference2ObjectFunction
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 Reference2ObjectFunction<K,V>
defRetValue
- the new default return value.Reference2ObjectFunction.defaultReturnValue()
public boolean containsKey(java.lang.Object k)
Function
Note that for some kind of functions (e.g., hashes) this method will always return true. This default implementation, in particular, always return true.
k
- the key.key
.Map.containsKey(Object)
public V put(K k, V v)
Reference2ObjectFunction
put
in interface Reference2ObjectFunction<K,V>
k
- the key.v
- the value.Function.put(Object,Object)
public V get(java.lang.Object k)
Reference2ObjectFunction
get
in interface Reference2ObjectFunction<K,V>
k
- the key.Function.get(Object)
public V getOrDefault(java.lang.Object k, V defaultValue)
Reference2ObjectFunction
getOrDefault
in interface Reference2ObjectFunction<K,V>
k
- the key.defaultValue
- the value to return if not present.defaultValue
if no value was present for the given key.Function.getOrDefault(Object, Object)
public V remove(java.lang.Object k)
Reference2ObjectFunction
remove
in interface Reference2ObjectFunction<K,V>
k
- the key.Function.remove(Object)
public void clear()
Function
Map.clear()
public int hashCode()
hashCode
in class java.lang.Object
public boolean equals(java.lang.Object o)
equals
in class java.lang.Object
public java.lang.String toString()
toString
in class java.lang.Object