public abstract class AbstractObject2CharFunction<K> extends Object implements Object2CharFunction<K>, Serializable
Optional operations just throw an UnsupportedOperationException
. Generic versions of accessors delegate to
the corresponding type-specific counterparts following the interface rules
(they take care of returning null
on a missing key).
This class handles directly a default return
value (including methods to access
it). Instances of classes inheriting from this class have just to return
defRetValue
to denote lack of a key in type-specific methods. The value
is serialized.
Implementing subclasses have just to provide type-specific get()
,
type-specific containsKey()
, and size()
methods.
Modifier and Type | Method and Description |
---|---|
void |
clear()
Removes all associations from this function (optional operation).
|
char |
defaultReturnValue()
Gets the default return value.
|
void |
defaultReturnValue(char rv)
Sets the default return value.
|
Character |
get(Object ok)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
char |
put(K key,
char value)
Adds a pair to the map.
|
Character |
put(K ok,
Character ov)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
Character |
remove(Object ok)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
char |
removeChar(Object key)
Removes the mapping with the given key.
|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
getChar
containsKey, size
public void defaultReturnValue(char rv)
Object2CharFunction
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 Object2CharFunction<K>
rv
- the new default return value.Object2CharFunction.defaultReturnValue()
public char defaultReturnValue()
Object2CharFunction
defaultReturnValue
in interface Object2CharFunction<K>
public char put(K key, char value)
Object2CharFunction
put
in interface Object2CharFunction<K>
key
- the key.value
- the value.Function.put(Object,Object)
public char removeChar(Object key)
Object2CharFunction
removeChar
in interface Object2CharFunction<K>
key
- the key.Function.remove(Object)
public void clear()
Function
clear
in interface Function<K,Character>
Map.clear()
public Character get(Object ok)
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,Character>
ok
- the key.null
if no value was present for the given key.Map.get(Object)
public Character put(K ok, Character ov)
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,Character>
ok
- the key.ov
- the value.null
if no value was present for the given key.Map.put(Object,Object)
public Character remove(Object ok)
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,Character>
ok
- the key.null
if no value was present for the given key.Map.remove(Object)