Package io.fluxcapacitor.common

Interface MemoizingSupplier<T>

Type Parameters:
T - the result type
All Superinterfaces:
Supplier<T>
All Known Implementing Classes:
DefaultMemoizingSupplier
public interface MemoizingSupplier<T> extends Supplier<T>
A Supplier that memoizes (caches) the result of a single computation. The first time the supplier is called, the result is stored and reused for all subsequent calls until cleared.

Instances of this interface are typically created using: io.fluxcapacitor.javaclient.common.ClientUtils#memoize(Supplier) 


 MemoizingSupplier<Config> configSupplier = ClientUtils.memoize(this::loadConfig);
 Config config = configSupplier.get(); // computes and caches
 boolean cached = configSupplier.isCached(); // true
 configSupplier.clear(); // clears the cached value

Time-bound memoization is also supported: 


 MemoizingSupplier<Token> tokenSupplier =
     ClientUtils.memoize(this::fetchToken, Duration.ofMinutes(15));

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    clear()
    Clears the cached value, forcing the next call to recompute.
    boolean
    isCached()
    Returns whether this supplier has already cached a value.

    Methods inherited from interface java.util.function.Supplier

    get

  • Method Details

    • isCached

      boolean isCached()
      Returns whether this supplier has already cached a value.

    • clear

      void clear()
      Clears the cached value, forcing the next call to recompute.