public static class Reference2LongFunctions.SynchronizedFunction<K> extends AbstractReference2LongFunction<K> implements Serializable
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.
|
long |
defaultReturnValue()
Gets the default return value.
|
void |
defaultReturnValue(long defRetValue)
Sets the default return value.
|
Long |
get(Object k)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
long |
getLong(Object k)
Returns the value to which the given key is mapped.
|
long |
put(K k,
long v)
Adds a pair to the map.
|
Long |
put(K k,
Long v)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
Long |
remove(Object k)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
long |
removeLong(Object k)
Removes the mapping with the given key.
|
int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
|
String |
toString() |
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,Long>
k
- the key.key
.Map.containsKey(Object)
public long defaultReturnValue()
Reference2LongFunction
defaultReturnValue
in interface Reference2LongFunction<K>
defaultReturnValue
in class AbstractReference2LongFunction<K>
public void defaultReturnValue(long defRetValue)
Reference2LongFunction
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 Reference2LongFunction<K>
defaultReturnValue
in class AbstractReference2LongFunction<K>
defRetValue
- the new default return value.Reference2LongFunction.defaultReturnValue()
public long put(K k, long v)
Reference2LongFunction
put
in interface Reference2LongFunction<K>
put
in class AbstractReference2LongFunction<K>
k
- the key.v
- the value.Function.put(Object,Object)
public void clear()
Function
clear
in interface Function<K,Long>
clear
in class AbstractReference2LongFunction<K>
Map.clear()
public Long put(K k, Long v)
AbstractReference2LongFunction
null
on a missing key.
This method must check whether the provided key is in the map using containsKey()
. Thus,
it probes the map twice. Implementors of subclasses should override it with a more efficient method.
put
in interface Function<K,Long>
put
in class AbstractReference2LongFunction<K>
k
- the key.v
- the value.null
if no value was present for the given key.Map.put(Object,Object)
public Long get(Object k)
AbstractReference2LongFunction
null
on a missing key.
This method must check whether the provided key is in the map using containsKey()
. Thus,
it probes the map twice. Implementors of subclasses should override it with a more efficient method.
get
in interface Function<K,Long>
get
in class AbstractReference2LongFunction<K>
k
- the key.null
if no value was present for the given key.Map.get(Object)
public Long remove(Object k)
AbstractReference2LongFunction
null
on a missing key.
This method must check whether the provided key is in the map using containsKey()
. Thus,
it probes the map twice. Implementors of subclasses should override it with a more efficient method.
remove
in interface Function<K,Long>
remove
in class AbstractReference2LongFunction<K>
null
if no value was present for the given key.Map.remove(Object)
public long removeLong(Object k)
Reference2LongFunction
removeLong
in interface Reference2LongFunction<K>
removeLong
in class AbstractReference2LongFunction<K>
Function.remove(Object)
public long getLong(Object k)
Reference2LongFunction
getLong
in interface Reference2LongFunction<K>
k
- the key.Function.get(Object)