public abstract class AbstractChar2IntFunction extends java.lang.Object implements Char2IntFunction, java.io.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).
|
boolean |
containsKey(java.lang.Object ok)
Returns true if this function contains a mapping for the specified key.
|
int |
defaultReturnValue()
Gets the default return value.
|
void |
defaultReturnValue(int rv)
Sets the default return value.
|
java.lang.Integer |
get(java.lang.Object ok)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
java.lang.Integer |
put(java.lang.Character ok,
java.lang.Integer ov)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
int |
put(char key,
int value)
Adds a pair to the map.
|
int |
remove(char key)
Removes the mapping with the given key.
|
java.lang.Integer |
remove(java.lang.Object ok)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
containsKey, get
public void defaultReturnValue(int rv)
Char2IntFunction
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 Char2IntFunction
rv
- the new default return value.Char2IntFunction.defaultReturnValue()
public int defaultReturnValue()
Char2IntFunction
defaultReturnValue
in interface Char2IntFunction
public int put(char key, int value)
Char2IntFunction
put
in interface Char2IntFunction
key
- the key.value
- the value.Function.put(Object,Object)
public int remove(char key)
Char2IntFunction
remove
in interface Char2IntFunction
Function.remove(Object)
public void clear()
Function
public boolean containsKey(java.lang.Object ok)
Function
Note that for some kind of functions (e.g., hashes) this method will always return true.
containsKey
in interface Function<java.lang.Character,java.lang.Integer>
ok
- the key.key
.Map.containsKey(Object)
public java.lang.Integer get(java.lang.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.
public java.lang.Integer put(java.lang.Character ok, java.lang.Integer 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.
public java.lang.Integer remove(java.lang.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.