org.agrona.collections

Class Long2NullableObjectHashMap<V>

java.lang.Object

org.agrona.collections.Long2ObjectHashMap<V>

org.agrona.collections.Long2NullableObjectHashMap<V>

Type Parameters:

V - type of values stored in the Map

All Implemented Interfaces:

Map<Long,V>

public class Long2NullableObjectHashMap<V>
extends Long2ObjectHashMap<V>

Variation of Long2ObjectHashMap that allows null values.

Nested Class Summary

Nested classes/interfaces inherited from class org.agrona.collections.Long2ObjectHashMap

Long2ObjectHashMap.EntryIterator, Long2ObjectHashMap.EntrySet, Long2ObjectHashMap.KeyIterator, Long2ObjectHashMap.KeySet, Long2ObjectHashMap.ValueCollection, Long2ObjectHashMap.ValueIterator

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
Long2NullableObjectHashMap() Constructs map with default settings.
Long2NullableObjectHashMap(int initialCapacity, float loadFactor) Constructs map with given initial capacity and load factory and enables caching of iterators.
Long2NullableObjectHashMap(int initialCapacity, float loadFactor, boolean shouldAvoidAllocation) Construct a new map allowing a configuration for initial capacity and load factor.
Long2NullableObjectHashMap(Long2ObjectHashMap<V> mapToCopy) Copy construct a new map from an existing one.

Method Summary

Modifier and Type	Method and Description
protected Object	mapNullValue(Object value) Longerceptor for masking null values.
protected V	unmapNullValue(Object value) Longerceptor for unmasking null values.

Methods inherited from class org.agrona.collections.Long2ObjectHashMap

capacity, clear, compact, compute, computeIfAbsent, computeIfPresent, containsKey, containsKey, containsValue, entrySet, equals, get, get, getMapped, hashCode, isEmpty, keySet, loadFactor, longForEach, put, put, putAll, remove, remove, replace, replace, resizeThreshold, size, toString, 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

Long2NullableObjectHashMap

public Long2NullableObjectHashMap()

Constructs map with default settings.

Long2NullableObjectHashMap

public Long2NullableObjectHashMap(int initialCapacity,
                                  float loadFactor)

Constructs map with given initial capacity and load factory and enables caching of iterators.

Parameters:

initialCapacity - for the backing array.

loadFactor - limit for resizing on puts.

Long2NullableObjectHashMap

public Long2NullableObjectHashMap(int initialCapacity,
                                  float loadFactor,
                                  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

shouldAvoidAllocation - should allocation be avoided by caching iterators and map entries.

Long2NullableObjectHashMap

public Long2NullableObjectHashMap(Long2ObjectHashMap<V> mapToCopy)

Copy construct a new map from an existing one.

Parameters:

mapToCopy - for construction.

Method Detail

mapNullValue

protected Object mapNullValue(Object value)

Description copied from class: Long2ObjectHashMap

Longerceptor for masking null values.

Overrides:

mapNullValue in class Long2ObjectHashMap<V>

Parameters:

value - value to mask.

Returns:

masked value.

unmapNullValue

protected V unmapNullValue(Object value)

Description copied from class: Long2ObjectHashMap

Longerceptor for unmasking null values.

Overrides:

unmapNullValue in class Long2ObjectHashMap<V>

Parameters:

value - value to unmask.

Returns:

unmasked value.