public class Long2CharArrayMap extends AbstractLong2CharMap implements Serializable, 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.
AbstractLong2CharMap.BasicEntryLong2CharMap.Entry, Long2CharMap.FastEntrySet| Constructor and Description |
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Long2CharArrayMap()
Creates a new empty array map.
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Long2CharArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Long2CharArrayMap(long[] key,
char[] value)
Creates a new empty array map with given key and value backing arrays.
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Long2CharArrayMap(long[] key,
char[] value,
int size)
Creates a new array map with given key and value backing arrays, using the given number of elements.
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Long2CharArrayMap(Long2CharMap m)
Creates a new empty array map copying the entries of a given map.
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Long2CharArrayMap(Map<? extends Long,? extends Character> m)
Creates a new empty array map copying the entries of a given map.
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| Modifier and Type | Method and Description |
|---|---|
void |
clear()
Removes all associations from this function (optional operation).
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Long2CharArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(long k)
Checks whether the given value is contained in
AbstractLong2CharMap.keySet(). |
boolean |
containsValue(char v)
Checks whether the given value is contained in
AbstractLong2CharMap.values(). |
char |
get(long k)
Returns the value to which the given key is mapped.
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boolean |
isEmpty() |
LongSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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Long2CharMap.FastEntrySet |
long2CharEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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char |
put(long k,
char v)
Adds a pair to the map.
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char |
remove(long k)
Removes the mapping with the given key.
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int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
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CharCollection |
values()
Returns a type-specific-set view of the values of this map.
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containsValue, entrySet, equals, hashCode, putAll, toStringcontainsKey, defaultReturnValue, defaultReturnValue, get, put, removedefaultReturnValue, defaultReturnValuecontainsKey, get, put, removecontainsKey, get, put, removepublic Long2CharArrayMap(long[] key,
char[] 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 Long2CharArrayMap()
public Long2CharArrayMap(int capacity)
capacity - the initial capacity.public Long2CharArrayMap(Long2CharMap m)
m - a map.public Long2CharArrayMap(Map<? extends Long,? extends Character> m)
m - a map.public Long2CharArrayMap(long[] key,
char[] 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 Long2CharMap.FastEntrySet long2CharEntrySet()
Long2CharMapThis method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Long2CharMap.entrySet()
so that it returns an ObjectSet
of objects of type Map.Entry (the latter makes it possible to
access keys and values with type-specific methods).
long2CharEntrySet in interface Long2CharMapLong2CharMap.entrySet()public char get(long k)
Long2CharFunctionget in interface Long2CharFunctionk - the key.Function.get(Object)public int size()
FunctionMost 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()
Functionpublic boolean containsKey(long k)
AbstractLong2CharMapAbstractLong2CharMap.keySet().containsKey in interface Long2CharFunctioncontainsKey in class AbstractLong2CharMapFunction.containsKey(Object)public boolean containsValue(char v)
AbstractLong2CharMapAbstractLong2CharMap.values().containsValue in interface Long2CharMapcontainsValue in class AbstractLong2CharMapMap.containsValue(Object)public boolean isEmpty()
public char put(long k,
char v)
Long2CharFunctionput in interface Long2CharFunctionput in class AbstractLong2CharFunctionk - the key.v - the value.Function.put(Object,Object)public char remove(long k)
Long2CharFunctionremove in interface Long2CharFunctionremove in class AbstractLong2CharFunctionFunction.remove(Object)public LongSet keySet()
AbstractLong2CharMapThe view is backed by the set returned by AbstractLong2CharMap.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 Long2CharMapkeySet in interface Map<Long,Character>keySet in class AbstractLong2CharMapMap.keySet()public CharCollection values()
AbstractLong2CharMapThe view is backed by the set returned by AbstractLong2CharMap.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 Long2CharMapvalues in interface Map<Long,Character>values in class AbstractLong2CharMapMap.values()public Long2CharArrayMap 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.