Module com.github.f4b6a3.uuid
Package com.github.f4b6a3.uuid.factory.function

Interface TimeFunction

  • All Superinterfaces:
    LongSupplier
    All Known Implementing Classes:
    DefaultTimeFunction, WindowsTimeFunction
    Functional Interface:
    This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
    @FunctionalInterface
public interface TimeFunction
extends LongSupplier
    It must return a number of 100-nanoseconds since 1970-01-01 (Unix epoch). Use toTimestamp(Instant) to convert the output to 100-nanoseconds since 1970-01-01 (Unix epoch). It also sets the output within the range 0 to 2^60-1. The AbstTimeBasedFactory will convert the output time to Gregorian epoch (1582-10-15) for you. Example: 
     // A `TimeFunction` that returns the `Instant.now()` as a number of 100-nanoseconds
 TimeFunction f = () -> TimeFunction.toTimestamp(Instant.now()); // for JDK 9+
    In JDK 8, Instant.now() has millisecond precision, in spite of Instant has nanoseconds resolution. In JDK 9+,Instant.now() has microsecond precision. Read: https://stackoverflow.com/questions/1712205 Read also: https://bugs.openjdk.java.net/browse/JDK-8068730

    • Method Summary

      Static Methods 
      Modifier and Type Method Description
      static long toTimestamp​(Instant instant)
      Converts an instant to a number of 100-nanoseconds since 1970-01-01 (Unix epoch).

    • Method Detail

      • toTimestamp

        static long toTimestamp​(Instant instant)
        Converts an instant to a number of 100-nanoseconds since 1970-01-01 (Unix epoch).
        Parameters:
        instant - an instant
        Returns:
        a number of 100-nanoseconds since 1970-01-01 (Unix epoch)