Method InspectSchemas

cpp/src/arrow/dataset/discovery.cc:95–106

}

Result<std::vector<std::shared_ptr<Schema>>> UnionDatasetFactory::InspectSchemas(
    InspectOptions options) {
  std::vector<std::shared_ptr<Schema>> schemas;

  for (const auto& child_factory : factories_) {
    ARROW_ASSIGN_OR_RAISE(auto child_schemas, child_factory->InspectSchemas(options));
    ARROW_ASSIGN_OR_RAISE(auto child_schema, UnifySchemas(child_schemas));
    schemas.emplace_back(child_schema);
  }

  return schemas;
}

Result<std::shared_ptr<Dataset>> UnionDatasetFactory::Finish(FinishOptions options) {
  std::vector<std::shared_ptr<Dataset>> children;