How to use

NoResultException

in

io.yawp.repository.query

public IdRef<T> onlyId() throws NoResultException, MoreThanOneResultException {
  List<IdRef<T>> ids = ids();
  if (ids.size() == 0) {
    throw new NoResultException();
  }
  if (ids.size() > 1) {
    throw new MoreThanOneResultException();
  }
  return ids.get(0);
}

  public Object get(IdRef<?> id) {
    if (cache.containsKey(id)) {
      return cache.get(id);
    }
    if (noResults.contains(id)) {
      throw new NoResultException();
    }
    try {
      Object t = id.refetch();
      cache.put(id, t);
      return t;
    } catch (NoResultException e) {
      noResults.add(id);
      throw e;
    }
  }
}

private T executeQueryOnly() throws MoreThanOneResultException {
  List<T> list = executeQuery();
  if (list.size() == 0) {
    throw new NoResultException();
  }
  if (list.size() == 1) {
    return list.get(0);
  }
  throw new MoreThanOneResultException();
}

private static Object fetchOldObject(Object object) {
  ObjectHolder objectHolder = new ObjectHolder(object);
  if (objectHolder.getId() == null) {
    throw new NoResultException();
  }
  return objectHolder.getId().fetch();
}

public T only() throws NoResultException, MoreThanOneResultException {
  r.namespace().set(getClazz());
  try {
    T object;
    if (isQueryById()) {
      object = executeQueryById();
    } else {
      object = executeQueryOnly();
    }
    if (object == null) {
      throw new NoResultException();
    }
    return object;
  } finally {
    r.namespace().reset();
  }
}