API reference > @kontsedal/olas-core > QueryHost

QueryHost type

The root's query cache, addressed by query id and entry key (the output of the query's key(...)). Writes are stamped with the calling plugin's name as their origin.

Signature:

type QueryHost = {
  get(id: string): QueryRef | undefined;
  keys(id: string): ReadonlyArray<readonly unknown[]>;
  peek(id: string, key: readonly unknown[]): unknown;
  write(id: string, key: readonly unknown[], updater: (prev: unknown) => unknown, options?: WriteOptions): void;
  replace(id: string, key: readonly unknown[], value: unknown, options?: WriteOptions): void;
  setData(id: string, key: readonly unknown[], updater: (prev: unknown) => unknown, options?: WriteOptions): Snapshot | undefined;
  invalidate(id: string, key: readonly unknown[]): Promise<void>;
  hydrate(state: DehydratedState): void;
  dehydrate(): DehydratedState;
  hashKey(key: readonly unknown[]): string;
};

References: QueryRef, WriteOptions, Snapshot, DehydratedState