com.hazelcast.client.impl.protocol.util

Class Int2ObjectHashMap<V>

java.lang.Object

com.hazelcast.client.impl.protocol.util.Int2ObjectHashMap<V>

Type Parameters:

V - values stored in the Map

All Implemented Interfaces:

Map<Integer,V>

public class Int2ObjectHashMap<V>
extends Object
implements Map<Integer,V>

Map implementation specialised for int keys using open addressing and linear probing for cache efficient access.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	Int2ObjectHashMap.EntryIterator<V>
class	Int2ObjectHashMap.KeyIterator
class	Int2ObjectHashMap.KeySet
static interface	Int2ObjectHashMap.Supplier<T>
class	Int2ObjectHashMap.ValueIterator<T>

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
Int2ObjectHashMap()
Int2ObjectHashMap(int initialCapacity, double loadFactor) Construct a new map allowing a configuration for initial capacity and load factor.

Method Summary

Methods

Modifier and Type	Method and Description
int	capacity() Get the total capacity for the map to which the load factor with be a fraction of.
void	clear()
void	compact() Compact the Map backing arrays by rehashing with a capacity just larger than current size and giving consideration to the load factor.
boolean	containsKey(int key) Overloaded version of Map.containsKey(Object) that takes a primitive int key.
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<Integer,V>>	entrySet()
V	get(int key) Overloaded version of Map.get(Object) that takes a primitive int key.
V	get(Object key)
V	getOrDefault(int key, Int2ObjectHashMap.Supplier<V> supplier) Get a value for a given key, or if it does ot exist then default the value via a Int2ObjectHashMap.Supplier and put it in the map.
boolean	isEmpty()
Int2ObjectHashMap.KeySet	keySet()
double	loadFactor() Get the load factor beyond which the map will increase size.
V	put(Integer key, V value)
V	put(int key, V value) Overloaded version of Map.put(Object, Object) that takes a primitive int key.
void	putAll(Map<? extends Integer,? extends V> map)
V	remove(int key) Overloaded version of Map.remove(Object) that takes a primitive int key.
V	remove(Object key)
int	resizeThreshold() Get the actual threshold which when reached the map resize.
int	size()
String	toString()
Collection<V>	values()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

Int2ObjectHashMap

public Int2ObjectHashMap()

Int2ObjectHashMap

public Int2ObjectHashMap(int initialCapacity,
                 double loadFactor)

Construct a new map allowing a configuration for initial capacity and load factor.

Parameters:

initialCapacity - for the backing array

loadFactor - limit for resizing on puts

Method Detail

loadFactor

public double loadFactor()

Get the load factor beyond which the map will increase size.

Returns:

load factor for when the map should increase size.

capacity

public int capacity()

Get the total capacity for the map to which the load factor with be a fraction of.

Returns:

the total capacity for the map.

resizeThreshold

public int resizeThreshold()

Get the actual threshold which when reached the map resize. This is a function of the current capacity and load factor.

Returns:

the threshold when the map will resize.

size

public int size()

Specified by:

size in interface Map<Integer,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Integer,V>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<Integer,V>

containsKey

public boolean containsKey(int key)

Overloaded version of Map.containsKey(Object) that takes a primitive int key.

Parameters:

key - for indexing the Map

Returns:

true if the key is found otherwise false.

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<Integer,V>

get

public V get(Object key)

Specified by:

get in interface Map<Integer,V>

get

public V get(int key)

Overloaded version of Map.get(Object) that takes a primitive int key.

Parameters:

key - for indexing the Map

Returns:

the value if found otherwise null

getOrDefault

public V getOrDefault(int key,
             Int2ObjectHashMap.Supplier<V> supplier)

Get a value for a given key, or if it does ot exist then default the value via a Int2ObjectHashMap.Supplier and put it in the map.

Parameters:

key - to search on.

supplier - to provide a default if the get returns null.

Returns:

the value if found otherwise the default.

put

public V put(Integer key,
    V value)

Specified by:

put in interface Map<Integer,V>

put

public V put(int key,
    V value)

Overloaded version of Map.put(Object, Object) that takes a primitive int key.

Parameters:

key - for indexing the Map

value - to be inserted in the Map

Returns:

the previous value if found otherwise null

remove

public V remove(Object key)

Specified by:

remove in interface Map<Integer,V>

remove

public V remove(int key)

Overloaded version of Map.remove(Object) that takes a primitive int key.

Parameters:

key - for indexing the Map

Returns:

the value if found otherwise null

clear

public void clear()

Specified by:

clear in interface Map<Integer,V>

compact

public void compact()

Compact the Map backing arrays by rehashing with a capacity just larger than current size and giving consideration to the load factor.

putAll

public void putAll(Map<? extends Integer,? extends V> map)

Specified by:

putAll in interface Map<Integer,V>

keySet

public Int2ObjectHashMap.KeySet keySet()

Specified by:

keySet in interface Map<Integer,V>

values

public Collection<V> values()

Specified by:

values in interface Map<Integer,V>

entrySet

public Set<Map.Entry<Integer,V>> entrySet()

Specified by:

entrySet in interface Map<Integer,V>

toString

public String toString()

Overrides:

toString in class Object