com.carrotsearch.hppc

Class ObjectLongIdentityHashMap<KType>

java.lang.Object

com.carrotsearch.hppc.ObjectLongHashMap<KType>

com.carrotsearch.hppc.ObjectLongIdentityHashMap<KType>

All Implemented Interfaces:

ObjectLongAssociativeContainer<KType>, ObjectLongMap<KType>, Preallocable, java.lang.Cloneable, java.lang.Iterable<ObjectLongCursor<KType>>

@Generated(date="2017-10-22T12:31:12+0200",
           value="KTypeVTypeIdentityHashMap.java")
public class ObjectLongIdentityHashMap<KType>
extends ObjectLongHashMap<KType>

An identity hash map of Object to long.

Nested Class Summary

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

ObjectLongHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.ObjectLongHashMap

assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object v1, java.lang.Object v2)
static <KType> ObjectLongIdentityHashMap<KType>	from(KType[] keys, long[] 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.ObjectLongHashMap

addTo, allocateBuffers, allocateThenInsertThenRehash, clear, clone, containsKey, ensureCapacity, equalElements, equals, forEach, forEach, get, getOrDefault, hashCode, indexExists, indexGet, indexInsert, indexOf, indexReplace, isEmpty, iterator, keys, put, putAll, putAll, putIfAbsent, putOrAdd, rehash, release, remove, removeAll, removeAll, removeAll, shiftConflictingKeys, size, toString, values, verifyLoadFactor, visualizeKeyDistribution

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ObjectLongIdentityHashMap

public ObjectLongIdentityHashMap()

New instance with sane defaults.

ObjectLongIdentityHashMap

public ObjectLongIdentityHashMap(int expectedElements)

New instance with sane defaults.

Parameters:

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

ObjectLongIdentityHashMap

public ObjectLongIdentityHashMap(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 ObjectLongHashMap.verifyLoadFactor(double).

ObjectLongIdentityHashMap

public ObjectLongIdentityHashMap(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 ObjectLongHashMap.verifyLoadFactor(double).

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

ObjectLongIdentityHashMap

public ObjectLongIdentityHashMap(ObjectLongAssociativeContainer<? extends KType> 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: ObjectLongHashMap

Returns a hash code for the given key.

The default implementation mixes the hash of the key with ObjectLongHashMap.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.

Overrides:

hashKey in class ObjectLongHashMap<KType>

equals

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

Overrides:

equals in class ObjectLongHashMap<KType>

from

public static <KType> ObjectLongIdentityHashMap<KType> from(KType[] keys,
                                            long[] values)

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