LocatableResolver { @VisibleForTesting public abstract CompletableFuture<Void> setWindow(long count); protected  LocatableResolver(@Nonnull FDBDatabase database,
                                @Nullable KeySpacePath path,
                                @Nullable CompletableFuture<ResolvedKeySpacePath> resolvedPath); ScopedValue<T> wrap(T value); @Nonnull FDBDatabase getDatabase(); @Nonnull CompletableFuture<Long> resolve(@Nonnull String name); @Nonnull CompletableFuture<Long> resolve(@Nullable FDBStoreTimer timer, @Nonnull String name); @API(API.Status.UNSTABLE) @Nonnull CompletableFuture<Long> resolve(@Nonnull FDBRecordContext context, @Nonnull String name); @Nonnull CompletableFuture<Long> resolve(@Nonnull String name,
                                           @Nonnull ResolverCreateHooks hooks); @Nonnull CompletableFuture<Long> resolve(@Nullable FDBStoreTimer timer,
                                           @Nonnull String name,
                                           @Nonnull ResolverCreateHooks hooks); @API(API.Status.UNSTABLE) @Nonnull CompletableFuture<Long> resolve(@Nonnull FDBRecordContext context,
                                           @Nonnull String name,
                                           @Nonnull ResolverCreateHooks hooks); @Nonnull CompletableFuture<ResolverResult> resolveWithMetadata(@Nonnull String name,
                                                                 @Nonnull ResolverCreateHooks hooks); @Nonnull CompletableFuture<ResolverResult> resolveWithMetadata(@Nullable FDBStoreTimer timer,
                                                                 @Nonnull String name,
                                                                 @Nonnull ResolverCreateHooks hooks); @API(API.Status.UNSTABLE) @Nonnull CompletableFuture<ResolverResult> resolveWithMetadata(@Nonnull FDBRecordContext context, @Nonnull String name, @Nonnull ResolverCreateHooks hooks); @Nonnull CompletableFuture<ResolverResult> mustResolveWithMetadata(@Nonnull FDBRecordContext context, @Nonnull String name); CompletableFuture<Long> mustResolve(@Nonnull FDBRecordContext context, @Nonnull String name); @Nonnull CompletableFuture<String> reverseLookup(@Nullable FDBStoreTimer timer, @Nonnull Long value); @Nonnull CompletableFuture<Void> exclusiveLock(); @Nonnull CompletableFuture<Void> enableWriteLock(); @Nonnull CompletableFuture<Void> disableWriteLock(); @Nonnull CompletableFuture<Void> retireLayer(); @Nonnull CompletableFuture<Void> incrementVersion(); @Nonnull CompletableFuture<Integer> getVersion(@Nullable FDBStoreTimer timer); @Nonnull CompletableFuture<Boolean> retired(@Nullable FDBStoreTimer timer); @Nonnull CompletableFuture<Boolean> retiredSkipCache(@Nonnull FDBRecordContext context); @Nonnull CompletableFuture<Void> updateMetadataAndVersion(@Nonnull final String key,
                                                            @Nullable final byte[] metadata); @VisibleForTesting final CompletableFuture<Void> setMapping(FDBRecordContext context, String key, Long value); @VisibleForTesting abstract CompletableFuture<Void> setWindow(long count); @Nonnull @API(API.Status.DEPRECATED) @Deprecated Subspace getMappingSubspace(); @Nonnull abstract CompletableFuture<Subspace> getMappingSubspaceAsync(); @Nonnull @API(API.Status.DEPRECATED) @Deprecated Subspace getBaseSubspace(); @Nonnull abstract CompletableFuture<Subspace> getBaseSubspaceAsync(); @Nonnull abstract ResolverResult deserializeValue(byte[] value); @Override String toString(); @Override boolean equals(Object obj); @Override int hashCode();  }
@Test public void testSetWindow() { Map<String, Long> oldMappings = new HashMap<>(); try (FDBRecordContext context = database.openContext()) { for (int i = 0; i < 20; i++) { String key = "old-resolved-" + i; Long value = globalScope.resolve(context.getTimer(), key).join(); oldMappings.put(key, value); } } globalScope.setWindow(10000L).join(); try (FDBRecordContext context = database.openContext()) { for (int i = 0; i < 20; i++) { Long value = globalScope.resolve(context.getTimer(), "new-resolved-" + i).join(); assertThat("resolved value is larger than the set window", value, greaterThanOrEqualTo(10000L)); } for (Map.Entry<String, Long> entry : oldMappings.entrySet()) { Long value = globalScope.resolve(context.getTimer(), entry.getKey()).join(); assertThat("we can still read the old mappings", value, is(entry.getValue())); } } }