Package org.keycloak.models.map.common

Class StreamUtils

java.lang.Object

org.keycloak.models.map.common.StreamUtils

public class StreamUtils
extends Object

Author:

hmlnarik

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	StreamUtils.AbstractToPairSpliterator<K,V,M>
static class	StreamUtils.Pair<T1,T2>

Constructor Summary

Constructors

Constructor	Description
StreamUtils()

Method Summary

Modifier and Type	Method	Description
static <K,V> Stream<StreamUtils.Pair<K,V>>	leftInnerJoinIterable(Stream<K> stream, Function<? super K,? extends Iterable<V>> mapper)	Creates a stream of pairs that join two streams.
static <K,V> Stream<StreamUtils.Pair<K,V>>	leftInnerJoinStream(Stream<K> stream, Function<? super K,Stream<V>> mapper)	Creates a stream of pairs that join two streams.

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamUtils

public StreamUtils()

Method Detail

leftInnerJoinStream

public static <K,V> Stream<StreamUtils.Pair<K,V>> leftInnerJoinStream(Stream<K> stream,
                                                                                  Function<? super K,Stream<V>> mapper)

Creates a stream of pairs that join two streams. For each element k from the stream and each element v obtained from the stream returned by the mapper for k, generates a stream of pairs (k, v).

Effectively performs equivalent of a LEFT INNER JOIN SQL operation on streams.

Type Parameters:

K -

V -

Parameters:

stream -

mapper -

Returns:

leftInnerJoinIterable

public static <K,V> Stream<StreamUtils.Pair<K,V>> leftInnerJoinIterable(Stream<K> stream,
                                                                                    Function<? super K,? extends Iterable<V>> mapper)

Creates a stream of pairs that join two streams. For each element k from the stream and each element v obtained from the Iterable returned by the mapper for k, generates a stream of pairs (k, v).

Effectively performs equivalent of a LEFT INNER JOIN SQL operation on streams.

Type Parameters:

K -

V -

Parameters:

stream -

mapper -

Returns: