Package com.regnosys.rosetta.common.util

Class StreamUtils

java.lang.Object

com.regnosys.rosetta.common.util.StreamUtils

public class StreamUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
StreamUtils()

Method Summary

Modifier and Type	Method	Description
static <T> Predicate<T>	distinctByKey(Function<? super T,?> ke)
static <A> Stream<A>	flattenTree(A initial, Function<A,Stream<A>> extract)
static <A> Function<A,Stream<A>>	flattenTree(Function<A,Stream<A>> extract)
static <A> Function<A,Stream<A>>	flattenTree(Function<A,Stream<A>> extract, Collection<A> visited)
static <A> Stream<A>	flattenTreeC(A initial, Function<A,Collection<A>> extract)
static <A> Function<A,Stream<A>>	flattenTreeC(Function<A,Collection<A>> extract)
static <E> Function<Object,Stream<E>>	instancesOf(Class<E> clazz)
static <E> Stream<E>	instancesOf(Stream<Object> stream, Class<E> clazz)
<T> Collector<T,Set<T>,Optional<T>>	only()
static <T> Collector<T,Set<T>,Optional<T>>	only(Function<Set<T>,RuntimeException> exceptionSupplier)
static <A> Stream<A>	optionalStream(Collection<A> c)
static <T> UnaryOperator<T>	peek(Consumer<T> c)
static <A> Stream<A>	recurse(A a, Function<A,A> func)
static <A> Stream<A>	recurse(A a, Function<A,A> func, Collection<A> visited)
static <A> void	visitBiTree(A initial, Consumer<A> visitFunction, Function<A,Collection<A>> traverseFunc1, Function<A,Collection<A>> traverseFunc2)
static <A> void	visitTreeC(A initial, Consumer<A> visitFunc, Function<A,Collection<A>> traverseFunc)
static <A> void	visitTreeS(A initial, Consumer<A> visitFunc, Function<A,Stream<A>> traversFunc)

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

flattenTreeC

public static <A> Function<A,Stream<A>> flattenTreeC(Function<A,Collection<A>> extract)

flattenTree

public static <A> Function<A,Stream<A>> flattenTree(Function<A,Stream<A>> extract)

flattenTreeC

public static <A> Stream<A> flattenTreeC(A initial,
 Function<A,Collection<A>> extract)

flattenTree

public static <A> Stream<A> flattenTree(A initial,
 Function<A,Stream<A>> extract)

flattenTree

public static <A> Function<A,Stream<A>> flattenTree(Function<A,Stream<A>> extract,
 Collection<A> visited)

visitTreeC

public static <A> void visitTreeC(A initial,
 Consumer<A> visitFunc,
 Function<A,Collection<A>> traverseFunc)

visitBiTree

public static <A> void visitBiTree(A initial,
 Consumer<A> visitFunction,
 Function<A,Collection<A>> traverseFunc1,
 Function<A,Collection<A>> traverseFunc2)

visitTreeS

public static <A> void visitTreeS(A initial,
 Consumer<A> visitFunc,
 Function<A,Stream<A>> traversFunc)

recurse

public static <A> Stream<A> recurse(A a,
 Function<A,A> func)

recurse

public static <A> Stream<A> recurse(A a,
 Function<A,A> func,
 Collection<A> visited)

optionalStream

public static <A> Stream<A> optionalStream(Collection<A> c)

distinctByKey

public static <T> Predicate<T> distinctByKey(Function<? super T,?> ke)

peek

public static <T> UnaryOperator<T> peek(Consumer<T> c)

only

public <T> Collector<T,Set<T>,Optional<T>> only()

only

public static <T> Collector<T,Set<T>,Optional<T>> only(Function<Set<T>,RuntimeException> exceptionSupplier)

instancesOf

public static <E> Function<Object,Stream<E>> instancesOf(Class<E> clazz)

instancesOf

public static <E> Stream<E> instancesOf(Stream<Object> stream,
 Class<E> clazz)