Package ai.djl.basicdataset.tabular

Class MapFeatures

java.lang.Object

java.util.AbstractMap<K,V>

java.util.concurrent.ConcurrentHashMap<String,String>

ai.djl.basicdataset.tabular.MapFeatures

All Implemented Interfaces:

Serializable, ConcurrentMap<String,String>, Map<String,String>

public class MapFeatures
extends ConcurrentHashMap<String,String>

An extension of the ConcurrentHashMap for use in the TabularTranslator.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.ConcurrentHashMap

ConcurrentHashMap.KeySetView<K extends Object,V extends Object>

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

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

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
MapFeatures()	Constructs a MapFeatures instance.
MapFeatures(int initialCapacity)	Constructs a MapFeatures instance.
MapFeatures(int initialCapacity, float loadFactor)	Constructs a MapFeatures instance.
MapFeatures(int initialCapacity, float loadFactor, int concurrencyLevel)	Constructs a MapFeatures.
MapFeatures(Map<? extends String,? extends String> m)	Constructs a MapFeatures instance.

Method Summary

Modifier and Type	Method	Description
static MapFeatures	fromMap(Map<String,String> source)	Creates a MapFeatures from a source list.

Methods inherited from class java.util.concurrent.ConcurrentHashMap

clear, compute, computeIfAbsent, computeIfPresent, contains, containsKey, containsValue, elements, entrySet, equals, forEach, forEach, forEach, forEachEntry, forEachEntry, forEachKey, forEachKey, forEachValue, forEachValue, get, getOrDefault, hashCode, isEmpty, keys, keySet, keySet, mappingCount, merge, newKeySet, newKeySet, put, putAll, putIfAbsent, reduce, reduceEntries, reduceEntries, reduceEntriesToDouble, reduceEntriesToInt, reduceEntriesToLong, reduceKeys, reduceKeys, reduceKeysToDouble, reduceKeysToInt, reduceKeysToLong, reduceToDouble, reduceToInt, reduceToLong, reduceValues, reduceValues, reduceValuesToDouble, reduceValuesToInt, reduceValuesToLong, remove, remove, replace, replace, replaceAll, search, searchEntries, searchKeys, searchValues, size, toString, values

Methods inherited from class java.util.AbstractMap

clone

Methods inherited from class java.lang.Object

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

Constructor Details

MapFeatures

public MapFeatures()

Constructs a MapFeatures instance.

See Also:

• ConcurrentHashMap()

MapFeatures

public MapFeatures(int initialCapacity)

Constructs a MapFeatures instance.

Parameters:

initialCapacity - The implementation performs internal sizing to accommodate this many elements.

Throws:

IllegalArgumentException - if the initial capacity of elements is negative

See Also:

• ConcurrentHashMap(int)

MapFeatures

public MapFeatures(Map<? extends String,? extends String> m)

Constructs a MapFeatures instance.

Parameters:

m - the map

See Also:

• ConcurrentHashMap(Map)

MapFeatures

public MapFeatures(int initialCapacity,
 float loadFactor)

Constructs a MapFeatures instance.

Parameters:

initialCapacity - the initial capacity. The implementation performs internal sizing to accommodate this many elements, given the specified load factor.

loadFactor - the load factor (table density) for establishing the initial table size

Throws:

IllegalArgumentException - if the initial capacity of elements is negative or the load factor is nonpositive

See Also:

• ConcurrentHashMap(int, float)

MapFeatures

public MapFeatures(int initialCapacity,
 float loadFactor,
 int concurrencyLevel)

Constructs a MapFeatures.

Parameters:

initialCapacity - the initial capacity. The implementation performs internal sizing to accommodate this many elements, given the specified load factor.

loadFactor - the load factor (table density) for establishing the initial table size

concurrencyLevel - the estimated number of concurrently updating threads. The implementation may use this value as a sizing hint.

Throws:

IllegalArgumentException - if the initial capacity is negative or the load factor or concurrencyLevel are nonpositive

See Also:

• ConcurrentHashMap(int, float, int)

Method Details

fromMap

public static MapFeatures fromMap(Map<String,String> source)

Creates a MapFeatures from a source list.

Parameters:

source - the source list

Returns:

a new MapFeatures