Package org.qubership.atp.dataset.service.direct.importexport.utils

Class StreamUtils

java.lang.Object

org.qubership.atp.dataset.service.direct.importexport.utils.StreamUtils

public class StreamUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
StreamUtils()

Method Summary

Modifier and Type	Method	Description
static <T> Set<UUID>	extractIds(Collection<T> entities, Function<T,UUID> extractor)	Extract id's from any type entities.
static <T> Map<UUID,List<T>>	toEntityListMap(Iterable<T> entities, Function<T,UUID> keyExtractor)
static <T, R> Map<R,T>	toEntityMap(Iterable<T> entities, Function<T,R> keyExtractor)
static <T> Map<String,T>	toNameEntityMap(Iterable<T> entities, Function<T,String> keyExtractor)
static <T> Map<String,UUID>	toNameIdEntityMap(Iterable<T> entities, Function<T,String> keyExtractor, Function<T,UUID> valueExtractor)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

StreamUtils

public StreamUtils()

Method Details

extractIds

public static <T> Set<UUID> extractIds(Collection<T> entities,
 Function<T,UUID> extractor)

Extract id's from any type entities.

Type Parameters:

T - processed entities type

Parameters:

entities - input entities

extractor - id extractor

Returns:

result set

toNameIdEntityMap

public static <T> Map<String,UUID> toNameIdEntityMap(Iterable<T> entities,
 Function<T,String> keyExtractor,
 Function<T,UUID> valueExtractor)

toNameEntityMap

public static <T> Map<String,T> toNameEntityMap(Iterable<T> entities,
 Function<T,String> keyExtractor)

toEntityMap

public static <T,
R> Map<R,T> toEntityMap(Iterable<T> entities,
 Function<T,R> keyExtractor)

toEntityListMap

public static <T> Map<UUID,List<T>> toEntityListMap(Iterable<T> entities,
 Function<T,UUID> keyExtractor)