Package com.github.benmanes.caffeine.cache

Class Async

  • final class Async
extends java.lang.Object
    Static utility methods and classes pertaining to asynchronous operations.

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      (package private) static class  Async.AsyncExpiry<K,​V>
      An expiry for asynchronous computations.
      (package private) static class  Async.AsyncRemovalListener<K,​V>
      A removal listener that asynchronously forwards the value stored in a CompletableFuture if successful to the user-supplied removal listener.
      (package private) static class  Async.AsyncWeigher<K,​V>
      A weigher for asynchronous computations.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      (package private) static long ASYNC_EXPIRY  

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private Async()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      (package private) static <V> @Nullable V getIfReady​(@Nullable java.util.concurrent.CompletableFuture<V> future)
      Returns the current value or null if either not done or failed.
      (package private) static <V> @Nullable V getWhenSuccessful​(@Nullable java.util.concurrent.CompletableFuture<V> future)
      Returns the value when completed successfully or null if failed.
      (package private) static boolean isReady​(@Nullable java.util.concurrent.CompletableFuture<?> future)
      Returns if the future has successfully completed.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • Async

        private Async()

    • Method Detail

      • isReady

        static boolean isReady​(@Nullable java.util.concurrent.CompletableFuture<?> future)
        Returns if the future has successfully completed.

      • getIfReady

        static <V> @Nullable V getIfReady​(@Nullable java.util.concurrent.CompletableFuture<V> future)
        Returns the current value or null if either not done or failed.

      • getWhenSuccessful

        static <V> @Nullable V getWhenSuccessful​(@Nullable java.util.concurrent.CompletableFuture<V> future)
        Returns the value when completed successfully or null if failed.