Object2LongHashMap (Hazelcast Root 3.12.9 API)

java.lang.Object
- com.hazelcast.util.collection.Object2LongHashMap<K>

Type Parameters:

K - type of keys stored in the Map

All Implemented Interfaces:

Map<K,Long>
```
public class Object2LongHashMap<K>
extends Object
implements Map<K,Long>
```
Map implementation specialised for long values using open addressing and linear probing for cache efficient access. The implementation is mirror copy of Long2ObjectHashMap and it also relies on missing value concept from Long2LongHashMap

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`class`	`Object2LongHashMap.EntryIterator`
`class`	`Object2LongHashMap.EntrySet`
`class`	`Object2LongHashMap.KeyIterator`
`class`	`Object2LongHashMap.KeySet`
`class`	`Object2LongHashMap.ValueCollection`
`class`	`Object2LongHashMap.ValueIterator`

Nested classes/interfaces inherited from interface java.util.Map
Map.Entry<K,V>

Constructor Summary

Constructors
Constructor and Description
`Object2LongHashMap(int initialCapacity, float loadFactor, long missingValue)` Construct a new map allowing a configuration for initial capacity and load factor.
`Object2LongHashMap(int initialCapacity, float loadFactor, long missingValue, boolean shouldAvoidAllocation)` Construct a new map allowing a configuration for initial capacity and load factor.
`Object2LongHashMap(long missingValue)` Construct a map with default capacity and load factor.
`Object2LongHashMap(Object2LongHashMap<K> mapToCopy)` Copy construct a new map from an existing one.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`capacity()` Get the total capacity for the map to which the load factor will 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(Object key)` Overloaded version of `Map.containsKey(Object)` that takes a primitive long key.
`boolean`	`containsValue(long value)`
`boolean`	`containsValue(Object value)`
`Object2LongHashMap.EntrySet`	`entrySet()`
`boolean`	`equals(Object o)`
`Long`	`get(Object key)`
`long`	`getValue(K key)` Overloaded version of `Map.get(Object)` that takes a primitive long key.
`int`	`hashCode()`
`boolean`	`isEmpty()`
`Object2LongHashMap.KeySet`	`keySet()`
`float`	`loadFactor()` Get the load factor beyond which the map will increase size.
`long`	`missingValue()` The value to be used as a null marker in the map.
`long`	`put(K key, long value)` Overloaded version of `Map.put(Object, Object)` that takes a primitive long key.
`Long`	`put(K key, Long value)`
`void`	`putAll(Map<? extends K,? extends Long> map)`
`Long`	`remove(Object key)`
`long`	`removeKey(K key)` Overloaded version of `Map.remove(Object)` that takes a primitive long key.
`long`	`replace(K key, long value)` Primitive specialised version of `Map.replace(Object, Object)`
`boolean`	`replace(K key, long oldValue, long newValue)` Primitive specialised version of `Map.replace(Object, Object, Object)`
`int`	`resizeThreshold()` Get the actual threshold which when reached the map will resize.
`int`	`size()`
`String`	`toString()`
`Object2LongHashMap.ValueCollection`	`values()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

- Constructor Detail
  - Object2LongHashMap
```
public Object2LongHashMap(long missingValue)
```
    Construct a map with default capacity and load factor.
    
    Parameters:
    
    missingValue - value to be used as a null maker in the map
  - Object2LongHashMap
```
public Object2LongHashMap(int initialCapacity,
                          float loadFactor,
                          long missingValue)
```
    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
    
    missingValue - value to be used as a null marker in the map
  - Object2LongHashMap
```
public Object2LongHashMap(int initialCapacity,
                          float loadFactor,
                          long missingValue,
                          boolean shouldAvoidAllocation)
```
    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
    
    missingValue - value to be used as a null marker in the map
    
    shouldAvoidAllocation - should allocation be avoided by caching iterators and map entries.
  - Object2LongHashMap
```
public Object2LongHashMap(Object2LongHashMap<K> mapToCopy)
```
    Copy construct a new map from an existing one.
    
    Parameters:
    
    mapToCopy - for construction.
- Method Detail
  - missingValue
```
public long missingValue()
```
    The value to be used as a null marker in the map.
    
    Returns:
    
    value to be used as a null marker in the map.
  - loadFactor
```
public float 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 will be a fraction of.
    
    Returns:
    
    the total capacity for the map.
  - resizeThreshold
```
public int resizeThreshold()
```
    Get the actual threshold which when reached the map will 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<K,Long>
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface Map<K,Long>
  - containsKey
```
public boolean containsKey(Object key)
```
    Overloaded version of Map.containsKey(Object) that takes a primitive long key.
    
    Specified by:
    
    containsKey in interface Map<K,Long>
    
    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<K,Long>
  - containsValue
```
public boolean containsValue(long value)
```
  - get
```
public Long get(Object key)
```
    Specified by:
    
    get in interface Map<K,Long>
  - getValue
```
public long getValue(K key)
```
    Overloaded version of Map.get(Object) that takes a primitive long key. Due to type erasure have to rename the method
    
    Parameters:
    
    key - for indexing the Map
    
    Returns:
    
    the value if found otherwise missingValue
  - put
```
public Long put(K key,
                Long value)
```
    Specified by:
    
    put in interface Map<K,Long>
  - put
```
public long put(K key,
                long value)
```
    Overloaded version of Map.put(Object, Object) that takes a primitive long key.
    
    Parameters:
    
    key - for indexing the Map
    
    value - to be inserted in the Map
    
    Returns:
    
    the previous value if found otherwise missingValue
  - remove
```
public Long remove(Object key)
```
    Specified by:
    
    remove in interface Map<K,Long>
  - removeKey
```
public long removeKey(K key)
```
    Overloaded version of Map.remove(Object) that takes a primitive long key. Due to type erasure have to rename the method
    
    Parameters:
    
    key - for indexing the Map
    
    Returns:
    
    the value if found otherwise missingValue
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface Map<K,Long>
  - 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 K,? extends Long> map)
```
    Specified by:
    
    putAll in interface Map<K,Long>
  - keySet
```
public Object2LongHashMap.KeySet keySet()
```
    Specified by:
    
    keySet in interface Map<K,Long>
  - values
```
public Object2LongHashMap.ValueCollection values()
```
    Specified by:
    
    values in interface Map<K,Long>
  - entrySet
```
public Object2LongHashMap.EntrySet entrySet()
```
    Specified by:
    
    entrySet in interface Map<K,Long>
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - equals
```
public boolean equals(Object o)
```
    Specified by:
    
    equals in interface Map<K,Long>
    
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Specified by:
    
    hashCode in interface Map<K,Long>
    
    Overrides:
    
    hashCode in class Object
  - replace
```
public long replace(K key,
                    long value)
```
    Primitive specialised version of Map.replace(Object, Object)
    
    Parameters:
    
    key - key with which the specified value is associated
    
    value - value to be associated with the specified key
    
    Returns:
    
    the previous value associated with the specified key, or null if there was no mapping for the key.
  - replace
```
public boolean replace(K key,
                       long oldValue,
                       long newValue)
```
    Primitive specialised version of Map.replace(Object, Object, Object)
    
    Parameters:
    
    key - key with which the specified value is associated
    
    oldValue - value expected to be associated with the specified key
    
    newValue - value to be associated with the specified key
    
    Returns:
    
    true if the value was replaced

Class Object2LongHashMap<K>

Nested Class Summary

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

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Map

Constructor Detail

Object2LongHashMap

Object2LongHashMap

Object2LongHashMap

Object2LongHashMap

Method Detail

missingValue

loadFactor

capacity

resizeThreshold

size

isEmpty

containsKey

containsValue

containsValue

get

getValue

put

put

remove

removeKey

clear

compact

putAll

keySet

values

entrySet

toString

equals

hashCode

replace

replace