Top Constructors Methods

org.jabref.model.util

public Class OptionalUtil

Class Inheritance

extends Object

java.lang.Object
org.jabref.model.util.OptionalUtil

Imports

java.util.Collection, .Collections, .List, .Optional, java.util.function.BiFunction, .BiPredicate, .Function, .Predicate, java.util.stream.Stream

Constructor Summary

Access	Constructor and Description
public	OptionalUtil()

Method Summary

Modifier and Type	Method and Description
public static <T, S, R> Optional<R>	combine(Optional<T> valueOne, Optional<S> valueTwo, BiFunction<T, S, R> combine)
public static <T, U> boolean	equals(Optional<T> left, Optional<U> right, BiPredicate<T, U> equality)
public static <T, R> Stream<R>	flatMap(Optional<T> value, Function<? super T, ? extends Collection<? extends R>> mapper)
public static <T, R> Stream<R>	flatMapFromStream(Optional<T> value, Function<? super T, ? extends Stream<? extends R>> mapper)
public static <T> Boolean	isPresentAnd(Optional<T> value, Predicate<T> check)
public static <T> Boolean	isPresentAndTrue(Optional<Boolean> value)
public static <T> Optional<T>	orElse(Optional<? extends T> valueOne, Optional<? extends T> valueTwo)
public static <T extends S, S> S	orElse(Optional<T> optional, S otherwise)
public static <T> List<T>	Returns: An immutable list containing the value - if no value: empty immutable list toList(Optional<T> value)
public static <T> List<T>	Returns: An immutable list containing the values - if no values present: empty immutable list toList(Optional<T>... values)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Constructor Detail

OptionalUtil	back to summary
public OptionalUtil()

Method Detail

combine	back to summary
public static <T, S, R> Optional<R> combine(Optional<T> valueOne, Optional<S> valueTwo, BiFunction<T, S, R> combine)

equals	back to summary
public static <T, U> boolean equals(Optional<T> left, Optional<U> right, BiPredicate<T, U> equality)

flatMap	back to summary
public static <T, R> Stream<R> flatMap(Optional<T> value, Function<? super T, ? extends Collection<? extends R>> mapper)

flatMapFromStream	back to summary
public static <T, R> Stream<R> flatMapFromStream(Optional<T> value, Function<? super T, ? extends Stream<? extends R>> mapper)

isPresentAnd	back to summary
public static <T> Boolean isPresentAnd(Optional<T> value, Predicate<T> check)

isPresentAndTrue	back to summary
public static <T> Boolean isPresentAndTrue(Optional<Boolean> value)

orElse	back to summary
public static <T> Optional<T> orElse(Optional<? extends T> valueOne, Optional<? extends T> valueTwo)

orElse	back to summary
public static <T extends S, S> S orElse(Optional<T> optional, S otherwise)

toList	back to summary
public static <T> List<T> toList(Optional<T> value) Returns:List<T> An immutable list containing the value - if no value: empty immutable list

toList	back to summary
public static <T> List<T> toList(Optional<T>... values) Returns:List<T> An immutable list containing the values - if no values present: empty immutable list Annotations @SafeVarargs