com.ibm.cos.v2.utils.cache

Interface CachedSupplier.PrefetchStrategy

All Superinterfaces:

AutoCloseable, SdkAutoCloseable

All Known Implementing Classes:

NonBlocking, OneCallerBlocks

Enclosing class:

CachedSupplier<T>

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 static interface CachedSupplier.PrefetchStrategy
extends SdkAutoCloseable

The way in which the cache should be pre-fetched when the data's RefreshResult.prefetchTime() arrives.

See Also:

OneCallerBlocks, NonBlocking

Method Summary

Modifier and Type	Method and Description
default void	close() Free any resources associated with the strategy.
default <T> RefreshResult<T>	fetch(Supplier<RefreshResult<T>> supplier) Invoke the provided supplier to retrieve the refresh result.
default void	initializeCachedSupplier(CachedSupplier<?> cachedSupplier) Invoked when the prefetch strategy is registered with a CachedSupplier.
void	prefetch(Runnable valueUpdater) Execute the provided value updater to update the cache.

Method Detail

prefetch

void prefetch(Runnable valueUpdater)

Execute the provided value updater to update the cache. The specific implementation defines how this is invoked.

fetch

default <T> RefreshResult<T> fetch(Supplier<RefreshResult<T>> supplier)

Invoke the provided supplier to retrieve the refresh result. This is useful for prefetch strategies to override when they care about the refresh result.

initializeCachedSupplier

default void initializeCachedSupplier(CachedSupplier<?> cachedSupplier)

Invoked when the prefetch strategy is registered with a CachedSupplier.

close

default void close()

Free any resources associated with the strategy. This is invoked when the CachedSupplier.close() method is invoked.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface SdkAutoCloseable