data_conversion::anonymous_namespace{StringViewSource.h} Namespace Reference

Functions
template<typename DataType >
bool	is_null (const DataType &typed_value)
template<typename T >
std::vector< std::string_view >	get_materialized_string_views (const size_t num_elements, const StringDictionary *string_dict, const T *ids)
std::vector< std::string_view >	get_materialized_string_views (const size_t num_elements, const StringDictionary *string_dict, const int8_t *ids, const SQLTypeInfo &type_info)

Function Documentation

template<typename T >

std::vector<std::string_view> data_conversion::anonymous_namespace{StringViewSource.h}::get_materialized_string_views	(	const size_t	num_elements,
		const StringDictionary *	string_dict,
		const T *	ids
	)

Definition at line 39 of file StringViewSource.h.

References StringDictionary::getStringView(), is_null(), heavydb.dtypes::T, and shared::transform().

Referenced by get_materialized_string_views(), and data_conversion::StringViewSource::getSourceData().

                  {
  std::vector<std::string_view> materialized_string_views(num_elements);
  std::transform(ids,
                 ids + num_elements,
                 materialized_string_views.begin(),
                 [&string_dict](const T& id) -> std::string_view {
                   if (is_null(id)) {
                     return std::string_view(nullptr, 0);
                   }
                   return string_dict->getStringView(id);
                 });
  return materialized_string_views;
}

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std::vector<std::string_view> data_conversion::anonymous_namespace{StringViewSource.h}::get_materialized_string_views	(	const size_t	num_elements,
		const StringDictionary *	string_dict,
		const int8_t *	ids,
		const SQLTypeInfo &	type_info
	)

Definition at line 56 of file StringViewSource.h.

References get_materialized_string_views(), SQLTypeInfo::get_size(), and UNREACHABLE.

                                  {
  switch (type_info.get_size()) {
    case 1:
      return get_materialized_string_views(
          num_elements, string_dict, reinterpret_cast<const uint8_t*>(ids));
      break;
    case 2:
      return get_materialized_string_views(
          num_elements, string_dict, reinterpret_cast<const uint16_t*>(ids));
      break;
    case 4:
      return get_materialized_string_views(
          num_elements, string_dict, reinterpret_cast<const int32_t*>(ids));
      break;
    default:
      UNREACHABLE();
  }

  return {};
}

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template<typename DataType >

bool data_conversion::anonymous_namespace{StringViewSource.h}::is_null

(

const DataType &

typed_value

)

Definition at line 23 of file StringViewSource.h.

References UNREACHABLE.

                                          {
  if constexpr (std::is_arithmetic<DataType>::value) {
    auto null = foreign_storage::get_null_value<DataType>();
    if (typed_value == null) {
      return true;
    } else {
      return false;
    }
  }

  UNREACHABLE();

  return false;
}