Package com.yubico.internal.util

Class OptionalUtil

  • public final class OptionalUtil
extends java.lang.Object
    Utilities for working with Optional values.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static <T> java.util.Optional<T> orElseOptional​(java.util.Optional<T> primary, java.util.function.Supplier<java.util.Optional<T>> recover)
      If primary is present, return it unchanged.
      static <T> java.util.stream.Stream<T> stream​(@NonNull java.util.Optional<T> o)
      Returns a sequential Stream with this Optional as its source.
      static <T> java.util.Optional<T> zipWith​(java.util.Optional<T> a, java.util.Optional<T> b, java.util.function.BinaryOperator<T> f)
      If both a and b are present, return f(a, b).

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • orElseOptional

        public static <T> java.util.Optional<T> orElseOptional​(java.util.Optional<T> primary,
                                                       java.util.function.Supplier<java.util.Optional<T>> recover)
        If primary is present, return it unchanged. Otherwise return the result of recover.

      • stream

        public static <T> java.util.stream.Stream<T> stream​(@NonNull
                                                    @NonNull java.util.Optional<T> o)
        Returns a sequential Stream with this Optional as its source.
        Parameters:
        o - the Optional to interpret as a Stream
        Returns:
        a sequential Stream containing the value of this Optional if present, otherwise an empty Stream.

      • zipWith

        public static <T> java.util.Optional<T> zipWith​(java.util.Optional<T> a,
                                                java.util.Optional<T> b,
                                                java.util.function.BinaryOperator<T> f)
        If both a and b are present, return f(a, b).

        If only a is present, return a.

        Otherwise, return b.