public class Long2ByteArrayMap extends AbstractLong2ByteMap 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.
AbstractLong2ByteMap.BasicEntryLong2ByteMap.Entry, Long2ByteMap.FastEntrySet| Constructor and Description |
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Long2ByteArrayMap()
Creates a new empty array map.
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Long2ByteArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Long2ByteArrayMap(long[] key,
byte[] value)
Creates a new empty array map with given key and value backing arrays.
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Long2ByteArrayMap(long[] key,
byte[] 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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Long2ByteArrayMap(Long2ByteMap m)
Creates a new empty array map copying the entries of a given map.
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Long2ByteArrayMap(Map<? extends Long,? extends Byte> 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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Long2ByteArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(long k)
Checks whether the given value is contained in
AbstractLong2ByteMap.keySet(). |
boolean |
containsValue(byte v)
Checks whether the given value is contained in
AbstractLong2ByteMap.values(). |
byte |
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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Long2ByteMap.FastEntrySet |
long2ByteEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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byte |
put(long k,
byte v)
Adds a pair to the map.
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byte |
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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ByteCollection |
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, removecompute, computeIfAbsent, computeIfPresent, containsKey, forEach, get, getOrDefault, merge, put, putIfAbsent, remove, remove, replace, replace, replaceAllpublic Long2ByteArrayMap(long[] 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 Long2ByteArrayMap()
public Long2ByteArrayMap(int capacity)
capacity - the initial capacity.public Long2ByteArrayMap(Long2ByteMap m)
m - a map.public Long2ByteArrayMap(Map<? extends Long,? extends Byte> m)
m - a map.public Long2ByteArrayMap(long[] 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 Long2ByteMap.FastEntrySet long2ByteEntrySet()
Long2ByteMapThis method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Long2ByteMap.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).
long2ByteEntrySet in interface Long2ByteMapLong2ByteMap.entrySet()public byte get(long k)
Long2ByteFunctionget in interface Long2ByteFunctionk - 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)
AbstractLong2ByteMapAbstractLong2ByteMap.keySet().containsKey in interface Long2ByteFunctioncontainsKey in class AbstractLong2ByteMapFunction.containsKey(Object)public boolean containsValue(byte v)
AbstractLong2ByteMapAbstractLong2ByteMap.values().containsValue in interface Long2ByteMapcontainsValue in class AbstractLong2ByteMapMap.containsValue(Object)public boolean isEmpty()
public byte put(long k,
byte v)
Long2ByteFunctionput in interface Long2ByteFunctionput in class AbstractLong2ByteFunctionk - the key.v - the value.Function.put(Object,Object)public byte remove(long k)
Long2ByteFunctionremove in interface Long2ByteFunctionremove in class AbstractLong2ByteFunctionk - the key.Function.remove(Object)public LongSet keySet()
AbstractLong2ByteMapThe view is backed by the set returned by AbstractLong2ByteMap.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 Long2ByteMapkeySet in interface Map<Long,Byte>keySet in class AbstractLong2ByteMapMap.keySet()public ByteCollection values()
AbstractLong2ByteMapThe view is backed by the set returned by AbstractLong2ByteMap.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 Long2ByteMapvalues in interface Map<Long,Byte>values in class AbstractLong2ByteMapMap.values()public Long2ByteArrayMap 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.