org.agrona.collections

Class Object2NullableObjectHashMap<K,V>

java.lang.Object

org.agrona.collections.Object2ObjectHashMap<K,V>

org.agrona.collections.Object2NullableObjectHashMap<K,V>

All Implemented Interfaces:

Serializable, Map<K,V>

public class Object2NullableObjectHashMap<K,V>
extends Object2ObjectHashMap<K,V>

Variation of Object2ObjectHashMap that allows null values.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.agrona.collections.Object2ObjectHashMap

Object2ObjectHashMap.EntryIterator, Object2ObjectHashMap.EntrySet, Object2ObjectHashMap.KeyIterator, Object2ObjectHashMap.KeySet, Object2ObjectHashMap.ValueCollection, Object2ObjectHashMap.ValueIterator

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
Object2NullableObjectHashMap()
Object2NullableObjectHashMap(int initialCapacity, float loadFactor) Defaults to avoiding allocation.
Object2NullableObjectHashMap(int initialCapacity, float loadFactor, boolean shouldAvoidAllocation)

Method Summary

Modifier and Type	Method and Description
protected Object	mapNullValue(Object value)
protected V	unmapNullValue(Object value)

Methods inherited from class org.agrona.collections.Object2ObjectHashMap

capacity, clear, compact, containsKey, containsValue, entrySet, equals, forEach, get, hashCode, isEmpty, keySet, loadFactor, put, putAll, remove, 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, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Detail

Object2NullableObjectHashMap

public Object2NullableObjectHashMap()

Object2NullableObjectHashMap

public Object2NullableObjectHashMap(int initialCapacity,
                                    float loadFactor)

Defaults to avoiding allocation.

Parameters:

initialCapacity - for the map to override Object2ObjectHashMap.MIN_CAPACITY

loadFactor - for the map to override Hashing.DEFAULT_LOAD_FACTOR.

Object2NullableObjectHashMap

public Object2NullableObjectHashMap(int initialCapacity,
                                    float loadFactor,
                                    boolean shouldAvoidAllocation)

Parameters:

initialCapacity - for the map to override Object2ObjectHashMap.MIN_CAPACITY

loadFactor - for the map to override Hashing.DEFAULT_LOAD_FACTOR.

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

Method Detail

mapNullValue

protected Object mapNullValue(Object value)

Overrides:

mapNullValue in class Object2ObjectHashMap<K,V>

unmapNullValue

protected V unmapNullValue(Object value)

Overrides:

unmapNullValue in class Object2ObjectHashMap<K,V>