Function useDataApiDynamicQueryResolved

www/data-module/src/data/ReactUtils.ts:91–119

(
  dependency: any[], callback: () => Collection)

// useDataApiDynamicQuery() will return empty collection whenever it is refreshed whereas
// this function will wait until the replacement query is resolved.
export function useDataApiDynamicQueryResolved<T, Collection extends IDataCollection>(
  dependency: any[], callback: () => Collection): Collection {
  const storedDependency = useRef<any[]>([]);
  let storedCollection = useRef<Collection|null>(null);
  let storedNewCollection = useRef<Collection|null>(null);

  if (storedCollection.current === null ||
      !storedCollection.current.isValid() ||
      !arrayElementsEqual(dependency, storedDependency.current)) {

    if (storedCollection.current !== null) {
      if (storedNewCollection.current !== null) {
        storedNewCollection.current.close();
      }
      storedNewCollection.current = callback();
    } else {
      storedCollection.current = callback();
    }
    storedDependency.current = [...dependency];
  } else if (storedNewCollection.current !== null && storedNewCollection.current.isResolved()) {
    if (storedCollection.current !== null) {
      storedCollection.current.close();
    }
    storedCollection.current = storedNewCollection.current;
    storedNewCollection.current = null;
  }

  return storedCollection.current;
}

export function useDataApiSingleElementQuery<T extends BaseClass, U extends BaseClass>(
    el: T | null, dependencies: any[], callback: (el: T) => DataCollection<U>): DataCollection<U> {