Function ExtractValues

be/src/exprs/string-functions.cc:198–205

Extract all values of the objects in queue and replace the contents of queue with them

// Extract all values of the objects in queue and replace the contents of queue with them
static void ExtractValues(JsonUdfValue* queue, JsonUdfAllocator* allocator) {
  SizeType old_items = queue->Size();
  for (SizeType i = 0; i < old_items; ++i) {
    if (!(*queue)[i].IsObject()) continue;
    for (auto& m : (*queue)[i].GetObject()) queue->PushBack(m.value, *allocator);
  }
  queue->Erase(queue->Begin(), queue->Begin() + old_items);
}

/// Process wildcard(*) in value selection. path_idx is the index after the wildcard in
/// path_str. Return next unprocessed index in path_str. Return -1 for errors.