datastore-get-full.ts

load(filter = '', order = '', page = 0, pageSize = 0, useCache = false, append = false) {
  if (useCache && this.items?.length > 0) {
    return;
  }
  this.loading = true;
  const url = this.settings.url + `?filter=${filter}&order=${order}&page=${page}&pageSize=${pageSize}`;

  this.http
    .get<T[]>(url)
    .pipe(
      catchError((e) => {
        this.loadError = e;
        return throwError(`Error loading ${this.settings.itemName}s`);
      }),
      finalize(() => (this.loading = false))
    )
    .subscribe((res) => {
      if (append) {
        this.items = this.items.concat(res);
      } else {
        this.items = res;
      }

      if (res.length === 0) {
        this.noLoadResultsSubject.next();
      }
    });
}