public class Byte2ByteArrayMap extends AbstractByte2ByteMap implements java.io.Serializable, java.lang.Cloneable
The main purpose of this implementation is that of wrapping cleanly the brute-force approach to the storage of a very small number of pairs: just put them into two parallel arrays and scan linearly to find an item.
AbstractByte2ByteMap.BasicEntry
Byte2ByteMap.Entry, Byte2ByteMap.FastEntrySet
Constructor and Description |
---|
Byte2ByteArrayMap()
Creates a new empty array map.
|
Byte2ByteArrayMap(byte[] key,
byte[] value)
Creates a new empty array map with given key and value backing arrays.
|
Byte2ByteArrayMap(byte[] key,
byte[] value,
int size)
Creates a new array map with given key and value backing arrays, using the given number of elements.
|
Byte2ByteArrayMap(Byte2ByteMap m)
Creates a new empty array map copying the entries of a given map.
|
Byte2ByteArrayMap(int capacity)
Creates a new empty array map of given capacity.
|
Byte2ByteArrayMap(java.util.Map<? extends java.lang.Byte,? extends java.lang.Byte> m)
Creates a new empty array map copying the entries of a given map.
|
Modifier and Type | Method and Description |
---|---|
Byte2ByteMap.FastEntrySet |
byte2ByteEntrySet()
Returns a type-specific set view of the mappings contained in this map.
|
void |
clear()
Removes all associations from this function (optional operation).
|
Byte2ByteArrayMap |
clone()
Returns a deep copy of this map.
|
boolean |
containsKey(byte k)
Checks whether the given value is contained in
AbstractByte2ByteMap.keySet() . |
boolean |
containsValue(byte v)
Checks whether the given value is contained in
AbstractByte2ByteMap.values() . |
byte |
get(byte k)
Returns the value to which the given key is mapped.
|
boolean |
isEmpty() |
ByteSet |
keySet()
Returns a type-specific-set view of the keys of this map.
|
byte |
put(byte k,
byte v)
Adds a pair to the map.
|
byte |
remove(byte 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.
|
ByteCollection |
values()
Returns a type-specific-set view of the values of this map.
|
containsValue, entrySet, equals, hashCode, putAll, toString
containsKey, defaultReturnValue, defaultReturnValue, get, put, remove
defaultReturnValue, defaultReturnValue
containsKey, get, put, remove
public Byte2ByteArrayMap(byte[] key, byte[] value)
It is responsibility of the caller that the elements of key
are distinct.
key
- the key array.value
- the value array (it must have the same length as key
).public Byte2ByteArrayMap()
public Byte2ByteArrayMap(int capacity)
capacity
- the initial capacity.public Byte2ByteArrayMap(Byte2ByteMap m)
m
- a map.public Byte2ByteArrayMap(java.util.Map<? extends java.lang.Byte,? extends java.lang.Byte> m)
m
- a map.public Byte2ByteArrayMap(byte[] key, byte[] value, int size)
It is responsibility of the caller that the first size
elements of key
are distinct.
key
- the key array.value
- the value array (it must have the same length as key
).size
- the number of valid elements in key
and value
.public Byte2ByteMap.FastEntrySet byte2ByteEntrySet()
Byte2ByteMap
This method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Byte2ByteMap.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).
byte2ByteEntrySet
in interface Byte2ByteMap
Byte2ByteMap.entrySet()
public byte get(byte k)
Byte2ByteFunction
get
in interface Byte2ByteFunction
k
- the key.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.
public void clear()
Function
clear
in interface Function<java.lang.Byte,java.lang.Byte>
clear
in interface java.util.Map<java.lang.Byte,java.lang.Byte>
clear
in class AbstractByte2ByteFunction
Map.clear()
public boolean containsKey(byte k)
AbstractByte2ByteMap
AbstractByte2ByteMap.keySet()
.containsKey
in interface Byte2ByteFunction
containsKey
in class AbstractByte2ByteMap
Function.containsKey(Object)
public boolean containsValue(byte v)
AbstractByte2ByteMap
AbstractByte2ByteMap.values()
.containsValue
in interface Byte2ByteMap
containsValue
in class AbstractByte2ByteMap
Map.containsValue(Object)
public boolean isEmpty()
isEmpty
in interface java.util.Map<java.lang.Byte,java.lang.Byte>
isEmpty
in class AbstractByte2ByteMap
public byte put(byte k, byte v)
Byte2ByteFunction
put
in interface Byte2ByteFunction
put
in class AbstractByte2ByteFunction
k
- the key.v
- the value.Function.put(Object,Object)
public byte remove(byte k)
Byte2ByteFunction
remove
in interface Byte2ByteFunction
remove
in class AbstractByte2ByteFunction
k
- the key.Function.remove(Object)
public ByteSet keySet()
AbstractByte2ByteMap
The view is backed by the set returned by AbstractByte2ByteMap.entrySet()
. Note that
no attempt is made at caching the result of this method, as this would
require adding some attributes that lightweight implementations would
not need. Subclasses may easily override this policy by calling
this method and caching the result, but implementors are encouraged to
write more efficient ad-hoc implementations.
keySet
in interface Byte2ByteMap
keySet
in interface java.util.Map<java.lang.Byte,java.lang.Byte>
keySet
in class AbstractByte2ByteMap
Map.keySet()
public ByteCollection values()
AbstractByte2ByteMap
The view is backed by the set returned by AbstractByte2ByteMap.entrySet()
. Note that
no attempt is made at caching the result of this method, as this would
require adding some attributes that lightweight implementations would
not need. Subclasses may easily override this policy by calling
this method and caching the result, but implementors are encouraged to
write more efficient ad-hoc implementations.
values
in interface Byte2ByteMap
values
in interface java.util.Map<java.lang.Byte,java.lang.Byte>
values
in class AbstractByte2ByteMap
Map.values()
public Byte2ByteArrayMap clone()
This method performs a deep copy of this hash map; the data stored in the map, however, is not cloned. Note that this makes a difference only for object keys.
clone
in class java.lang.Object