public class Byte2ObjectArrayMap<V> extends AbstractByte2ObjectMap<V> 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.
AbstractByte2ObjectMap.BasicEntry<V>Byte2ObjectMap.Entry<V>, Byte2ObjectMap.FastEntrySet<V>defRetValue| Constructor and Description |
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Byte2ObjectArrayMap()
Creates a new empty array map.
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Byte2ObjectArrayMap(byte[] key,
Object[] value)
Creates a new empty array map with given key and value backing arrays.
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Byte2ObjectArrayMap(byte[] key,
Object[] 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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Byte2ObjectArrayMap(Byte2ObjectMap<V> m)
Creates a new empty array map copying the entries of a given map.
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Byte2ObjectArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Byte2ObjectArrayMap(Map<? extends Byte,? extends V> m)
Creates a new empty array map copying the entries of a given map.
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| Modifier and Type | Method and Description |
|---|---|
Byte2ObjectMap.FastEntrySet<V> |
byte2ObjectEntrySet()
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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Byte2ObjectArrayMap<V> |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(byte k)
Checks whether the given value is contained in
AbstractByte2ObjectMap.keySet(). |
boolean |
containsValue(Object v)
Checks whether the given value is contained in
AbstractByte2ObjectMap.values(). |
V |
get(byte k)
Returns the value to which the given key is mapped.
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boolean |
isEmpty() |
ByteSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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V |
put(byte k,
V v)
Adds a pair to the map.
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V |
remove(byte 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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ObjectCollection<V> |
values()
Returns a type-specific-set view of the values of this map.
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entrySet, equals, hashCode, putAll, toStringcontainsKey, defaultReturnValue, defaultReturnValue, get, put, removefinalize, getClass, notify, notifyAll, wait, wait, waitdefaultReturnValue, defaultReturnValuecontainsKey, get, put, removecontainsKey, get, put, removepublic Byte2ObjectArrayMap(byte[] key,
Object[] 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 Byte2ObjectArrayMap()
public Byte2ObjectArrayMap(int capacity)
capacity - the initial capacity.public Byte2ObjectArrayMap(Byte2ObjectMap<V> m)
m - a map.public Byte2ObjectArrayMap(Map<? extends Byte,? extends V> m)
m - a map.public Byte2ObjectArrayMap(byte[] key,
Object[] 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 Byte2ObjectMap.FastEntrySet<V> byte2ObjectEntrySet()
Byte2ObjectMapThis method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Byte2ObjectMap.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).
byte2ObjectEntrySet in interface Byte2ObjectMap<V>Byte2ObjectMap.entrySet()public V get(byte k)
Byte2ObjectFunctionget in interface Byte2ObjectFunction<V>k - 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(byte k)
AbstractByte2ObjectMapAbstractByte2ObjectMap.keySet().containsKey in interface Byte2ObjectFunction<V>containsKey in class AbstractByte2ObjectMap<V>Function.containsKey(Object)public boolean containsValue(Object v)
AbstractByte2ObjectMapAbstractByte2ObjectMap.values().containsValue in interface Map<Byte,V>containsValue in class AbstractByte2ObjectMap<V>public boolean isEmpty()
public V put(byte k, V v)
Byte2ObjectFunctionput in interface Byte2ObjectFunction<V>put in class AbstractByte2ObjectFunction<V>k - the key.v - the value.Function.put(Object,Object)public V remove(byte k)
Byte2ObjectFunctionremove in interface Byte2ObjectFunction<V>remove in class AbstractByte2ObjectFunction<V>Function.remove(Object)public ByteSet keySet()
AbstractByte2ObjectMapThe view is backed by the set returned by AbstractByte2ObjectMap.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 Byte2ObjectMap<V>keySet in interface Map<Byte,V>keySet in class AbstractByte2ObjectMap<V>Map.keySet()public ObjectCollection<V> values()
AbstractByte2ObjectMapThe view is backed by the set returned by AbstractByte2ObjectMap.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 Byte2ObjectMap<V>values in interface Map<Byte,V>values in class AbstractByte2ObjectMap<V>Map.values()public Byte2ObjectArrayMap<V> 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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