public class Char2LongArrayMap extends AbstractChar2LongMap 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.
AbstractChar2LongMap.BasicEntryChar2LongMap.Entry, Char2LongMap.FastEntrySetdefRetValue| Constructor and Description |
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Char2LongArrayMap()
Creates a new empty array map.
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Char2LongArrayMap(char[] key,
long[] value)
Creates a new empty array map with given key and value backing arrays.
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Char2LongArrayMap(char[] key,
long[] 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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Char2LongArrayMap(Char2LongMap m)
Creates a new empty array map copying the entries of a given map.
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Char2LongArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Char2LongArrayMap(Map<? extends Character,? extends Long> m)
Creates a new empty array map copying the entries of a given map.
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| Modifier and Type | Method and Description |
|---|---|
Char2LongMap.FastEntrySet |
char2LongEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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void |
clear()
Removes all associations from this function (optional operation).
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Char2LongArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(char k)
Checks whether the given value is contained in
AbstractChar2LongMap.keySet(). |
boolean |
containsValue(long v)
Checks whether the given value is contained in
AbstractChar2LongMap.values(). |
long |
get(char k)
Returns the value to which the given key is mapped.
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boolean |
isEmpty() |
CharSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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long |
put(char k,
long v)
Adds a pair to the map.
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long |
remove(char 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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LongCollection |
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, removefinalize, getClass, notify, notifyAll, wait, wait, waitdefaultReturnValue, defaultReturnValuecontainsKey, get, put, removecontainsKey, get, put, removepublic Char2LongArrayMap(char[] key,
long[] 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 Char2LongArrayMap()
public Char2LongArrayMap(int capacity)
capacity - the initial capacity.public Char2LongArrayMap(Char2LongMap m)
m - a map.public Char2LongArrayMap(Map<? extends Character,? extends Long> m)
m - a map.public Char2LongArrayMap(char[] key,
long[] 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 Char2LongMap.FastEntrySet char2LongEntrySet()
Char2LongMapThis method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Char2LongMap.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).
char2LongEntrySet in interface Char2LongMapChar2LongMap.entrySet()public long get(char k)
Char2LongFunctionget in interface Char2LongFunctionk - 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(char k)
AbstractChar2LongMapAbstractChar2LongMap.keySet().containsKey in interface Char2LongFunctioncontainsKey in class AbstractChar2LongMapFunction.containsKey(Object)public boolean containsValue(long v)
AbstractChar2LongMapAbstractChar2LongMap.values().containsValue in interface Char2LongMapcontainsValue in class AbstractChar2LongMapMap.containsValue(Object)public boolean isEmpty()
public long put(char k,
long v)
Char2LongFunctionput in interface Char2LongFunctionput in class AbstractChar2LongFunctionk - the key.v - the value.Function.put(Object,Object)public long remove(char k)
Char2LongFunctionremove in interface Char2LongFunctionremove in class AbstractChar2LongFunctionFunction.remove(Object)public CharSet keySet()
AbstractChar2LongMapThe view is backed by the set returned by AbstractChar2LongMap.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 Char2LongMapkeySet in interface Map<Character,Long>keySet in class AbstractChar2LongMapMap.keySet()public LongCollection values()
AbstractChar2LongMapThe view is backed by the set returned by AbstractChar2LongMap.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 Char2LongMapvalues in interface Map<Character,Long>values in class AbstractChar2LongMapMap.values()public Char2LongArrayMap 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.
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