com.carrotsearch.hppc

Class ObjectObjectIdentityHashMap<KType,VType>

java.lang.Object

com.carrotsearch.hppc.ObjectObjectHashMap<KType,VType>

com.carrotsearch.hppc.ObjectObjectIdentityHashMap<KType,VType>

All Implemented Interfaces:

ObjectObjectAssociativeContainer<KType,VType>, ObjectObjectMap<KType,VType>, Preallocable, java.lang.Cloneable, java.lang.Iterable<ObjectObjectCursor<KType,VType>>

@Generated(date="2015-05-07T09:33:03+0200",
           value="KTypeVTypeIdentityHashMap.java")
public class ObjectObjectIdentityHashMap<KType,VType>
extends ObjectObjectHashMap<KType,VType>

An identity hash map of Object to Object.

Nested Class Summary

Nested classes/interfaces inherited from class com.carrotsearch.hppc.ObjectObjectHashMap

ObjectObjectHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.ObjectObjectHashMap

keys, values

Constructor Summary

Constructors

Constructor and Description
ObjectObjectIdentityHashMap() New instance with sane defaults.
ObjectObjectIdentityHashMap(int expectedElements) New instance with sane defaults.
ObjectObjectIdentityHashMap(int expectedElements, double loadFactor) New instance with sane defaults.
ObjectObjectIdentityHashMap(int expectedElements, double loadFactor, HashOrderMixingStrategy orderMixer) New instance with the provided defaults.
ObjectObjectIdentityHashMap(ObjectObjectAssociativeContainer<? extends KType,? extends VType> container) Create a hash map from all key-value pairs of another container.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object v1, java.lang.Object v2)
static <KType,VType> ObjectObjectIdentityHashMap<KType,VType>	from(KType[] keys, VType[] values) Creates a hash map from two index-aligned arrays of key-value pairs.
int	hashKey(KType key) Returns a hash code for the given key.

Methods inherited from class com.carrotsearch.hppc.ObjectObjectHashMap

clear, clone, containsKey, ensureCapacity, equals, forEach, forEach, get, getOrDefault, hashCode, indexExists, indexGet, indexInsert, indexOf, indexReplace, isEmpty, iterator, keys, put, putAll, putAll, putIfAbsent, release, remove, removeAll, removeAll, removeAll, size, toString, values, visualizeKeyDistribution

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

ObjectObjectIdentityHashMap

public ObjectObjectIdentityHashMap()

New instance with sane defaults.

ObjectObjectIdentityHashMap

public ObjectObjectIdentityHashMap(int expectedElements)

New instance with sane defaults.

Parameters:

expectedElements - The expected number of elements guaranteed not to cause buffer expansion (inclusive).

ObjectObjectIdentityHashMap

public ObjectObjectIdentityHashMap(int expectedElements,
                                   double loadFactor)

New instance with sane defaults.

Parameters:

expectedElements - The expected number of elements guaranteed not to cause buffer expansion (inclusive).

loadFactor - The load factor for internal buffers. Insane load factors (zero, full capacity) are rejected by ObjectObjectHashMap.verifyLoadFactor(double).

ObjectObjectIdentityHashMap

public ObjectObjectIdentityHashMap(int expectedElements,
                                   double loadFactor,
                                   HashOrderMixingStrategy orderMixer)

New instance with the provided defaults.

Parameters:

expectedElements - The expected number of elements guaranteed not to cause a rehash (inclusive).

loadFactor - The load factor for internal buffers. Insane load factors (zero, full capacity) are rejected by ObjectObjectHashMap.verifyLoadFactor(double).

orderMixer - Hash key order mixing strategy. See HashOrderMixing for predefined implementations. Use constant mixers only if you understand the potential consequences.

ObjectObjectIdentityHashMap

public ObjectObjectIdentityHashMap(ObjectObjectAssociativeContainer<? extends KType,? extends VType> container)

Create a hash map from all key-value pairs of another container.

Method Detail

hashKey

public int hashKey(KType key)

Description copied from class: ObjectObjectHashMap

Returns a hash code for the given key.

The default implementation mixes the hash of the key with ObjectObjectHashMap.keyMixer to differentiate hash order of keys between hash containers. Helps alleviate problems resulting from linear conflict resolution in open addressing.

The output from this function should evenly distribute keys across the entire integer range.

equals

public boolean equals(java.lang.Object v1,
                      java.lang.Object v2)

from

public static <KType,VType> ObjectObjectIdentityHashMap<KType,VType> from(KType[] keys,
                                                                          VType[] values)

Creates a hash map from two index-aligned arrays of key-value pairs.