io.lacuna.bifurcan

Class DurableMap<K,V>

java.lang.Object

io.lacuna.bifurcan.DurableMap<K,V>

All Implemented Interfaces:

ICollection<IMap<K,V>,IEntry<K,V>>, IDurableCollection, IMap<K,V>, Iterable<IEntry<K,V>>, Function<K,V>

public class DurableMap<K,V>
extends Object
implements IDurableCollection, IMap<K,V>

Nested Class Summary

Nested classes/interfaces inherited from interface io.lacuna.bifurcan.IDurableCollection

IDurableCollection.Fingerprint, IDurableCollection.Root

Constructor Summary

Constructors

Constructor and Description
DurableMap(DurableInput.Pool bytes, IDurableCollection.Root root, long size, io.lacuna.bifurcan.durable.blocks.SkipTable hashTable, io.lacuna.bifurcan.durable.blocks.SkipTable indexTable, DurableInput.Pool entries, IDurableEncoding.Map encoding)

Method Summary

Modifier and Type	Method and Description
DurableInput.Pool	bytes()
DurableMap<K,V>	clone()
static <K,V> DurableMap<K,V>	decode(IDurableEncoding.Map encoding, IDurableCollection.Root root, DurableInput.Pool pool)
static <K,V> void	encode(Iterator<IEntry<K,V>> entries, IDurableEncoding.Map encoding, int maxRealizedEntries, DurableOutput out)
IDurableEncoding.Map	encoding()
boolean	equals(Object obj)
static <K,V> DurableMap<K,V>	from(Iterator<IEntry<K,V>> entries, IDurableEncoding.Map encoding, Path directory, int maxRealizedEntries)
V	get(K key, V defaultValue)
int	hashCode()
OptionalLong	indexOf(K key)
Iterator<IEntry<K,V>>	iterator()
BiPredicate<K,K>	keyEquality()
ToLongFunction<K>	keyHash()
IEntry.WithHash<K,V>	nth(long idx)
static <K,V> DurableMap<K,V>	open(Path path, IDurableEncoding.Map encoding)
IDurableCollection.Root	root()
long	size()
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.lacuna.bifurcan.IDurableCollection

dependencies

Methods inherited from interface io.lacuna.bifurcan.IMap

apply, contains, containsAll, containsAll, containsAny, containsAny, difference, difference, entries, equals, forked, get, getOrCreate, hashSortedEntries, intersection, intersection, isLinear, keys, linear, mapValues, merge, put, put, remove, save, split, spliterator, stream, toMap, union, update, values

Methods inherited from interface io.lacuna.bifurcan.ICollection

nth, save

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Constructor Detail

DurableMap

public DurableMap(DurableInput.Pool bytes,
                  IDurableCollection.Root root,
                  long size,
                  io.lacuna.bifurcan.durable.blocks.SkipTable hashTable,
                  io.lacuna.bifurcan.durable.blocks.SkipTable indexTable,
                  DurableInput.Pool entries,
                  IDurableEncoding.Map encoding)

Method Detail

open

public static <K,V> DurableMap<K,V> open(Path path,
                                         IDurableEncoding.Map encoding)

encode

public static <K,V> void encode(Iterator<IEntry<K,V>> entries,
                                IDurableEncoding.Map encoding,
                                int maxRealizedEntries,
                                DurableOutput out)

decode

public static <K,V> DurableMap<K,V> decode(IDurableEncoding.Map encoding,
                                           IDurableCollection.Root root,
                                           DurableInput.Pool pool)

from

public static <K,V> DurableMap<K,V> from(Iterator<IEntry<K,V>> entries,
                                         IDurableEncoding.Map encoding,
                                         Path directory,
                                         int maxRealizedEntries)

bytes

public DurableInput.Pool bytes()

Specified by:

bytes in interface IDurableCollection

root

public IDurableCollection.Root root()

Specified by:

root in interface IDurableCollection

encoding

public IDurableEncoding.Map encoding()

Specified by:

encoding in interface IDurableCollection

keyHash

public ToLongFunction<K> keyHash()

Specified by:

keyHash in interface IMap<K,V>

Returns:

the hash function used by the map

keyEquality

public BiPredicate<K,K> keyEquality()

Specified by:

keyEquality in interface IMap<K,V>

Returns:

the key equality semantics used by the map

get

public V get(K key,
             V defaultValue)

Specified by:

get in interface IMap<K,V>

Returns:

the value under key, or defaultValue if there is no such key

indexOf

public OptionalLong indexOf(K key)

Specified by:

indexOf in interface IMap<K,V>

Returns:

the index of key within the collection, if it's present

size

public long size()

Specified by:

size in interface ICollection<IMap<K,V>,IEntry<K,V>>

Returns:

the number of elements in the collection

nth

public IEntry.WithHash<K,V> nth(long idx)

Specified by:

nth in interface ICollection<IMap<K,V>,IEntry<K,V>>

Returns:

the element at idx

iterator

public Iterator<IEntry<K,V>> iterator()

Specified by:

iterator in interface IMap<K,V>

Specified by:

iterator in interface Iterable<IEntry<K,V>>

Returns:

an iterator over all entries in the map

clone

public DurableMap<K,V> clone()

Specified by:

clone in interface ICollection<IMap<K,V>,IEntry<K,V>>

Overrides:

clone in class Object

Returns:

a cloned copy of the collection

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object