com.carrotsearch.hppc

Class LongObjectScatterMap<VType>

java.lang.Object

com.carrotsearch.hppc.LongObjectHashMap<VType>

com.carrotsearch.hppc.LongObjectScatterMap<VType>

All Implemented Interfaces:

LongObjectAssociativeContainer<VType>, LongObjectMap<VType>, Preallocable, java.lang.Cloneable, java.lang.Iterable<LongObjectCursor<VType>>

@Generated(date="2017-10-22T12:31:12+0200",
           value="KTypeVTypeScatterMap.java")
public class LongObjectScatterMap<VType>
extends LongObjectHashMap<VType>

Same as LongObjectHashMap but does not implement per-instance key mixing strategy and uses a simpler (faster) bit distribution function.

Note: read about important differences between hash and scatter sets.

Nested Class Summary

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

LongObjectHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.LongObjectHashMap

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

Constructor Summary

Constructors

Constructor and Description
LongObjectScatterMap() New instance with sane defaults.
LongObjectScatterMap(int expectedElements) New instance with sane defaults.
LongObjectScatterMap(int expectedElements, double loadFactor) New instance with sane defaults.

Method Summary

Methods

Modifier and Type	Method and Description
static <VType> LongObjectScatterMap<VType>	from(long[] keys, VType[] values) Creates a hash map from two index-aligned arrays of key-value pairs.
protected int	hashKey(long key) Returns a hash code for the given key.

Methods inherited from class com.carrotsearch.hppc.LongObjectHashMap

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, 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

LongObjectScatterMap

public LongObjectScatterMap()

New instance with sane defaults.

LongObjectScatterMap

public LongObjectScatterMap(int expectedElements)

New instance with sane defaults.

LongObjectScatterMap

public LongObjectScatterMap(int expectedElements,
                    double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(long key)

Description copied from class: LongObjectHashMap

Returns a hash code for the given key.

The default implementation mixes the hash of the key with LongObjectHashMap.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 LongObjectHashMap<VType>

from

public static <VType> LongObjectScatterMap<VType> from(long[] keys,
                                       VType[] values)

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