Method getColumnByName

matlab/src/cpp/arrow/matlab/tabular/proxy/table.cc:265–290

}

void Table::getColumnByName(libmexclass::proxy::method::Context& context) {
  using ChunkedArrayProxy = arrow::matlab::array::proxy::ChunkedArray;
  namespace mda = ::matlab::data;
  using namespace libmexclass::proxy;
  mda::ArrayFactory factory;

  mda::StructArray args = context.inputs[0];
  const mda::StringArray name_mda = args[0]["Name"];
  const auto name_utf16 = std::u16string(name_mda[0]);
  MATLAB_ASSIGN_OR_ERROR_WITH_CONTEXT(const auto name,
                                      arrow::util::UTF16StringToUTF8(name_utf16), context,
                                      error::UNICODE_CONVERSION_ERROR_ID);

  const std::vector<std::string> names = {name};
  const auto& schema = table->schema();
  MATLAB_ERROR_IF_NOT_OK_WITH_CONTEXT(schema->CanReferenceFieldsByNames(names), context,
                                      error::ARROW_TABULAR_SCHEMA_AMBIGUOUS_FIELD_NAME);

  const auto chunked_array = table->GetColumnByName(name);
  const auto chunked_array_proxy = std::make_shared<ChunkedArrayProxy>(chunked_array);

  const auto chunked_array_proxy_id = ProxyManager::manageProxy(chunked_array_proxy);
  const auto chunked_array_proxy_id_mda = factory.createScalar(chunked_array_proxy_id);

  context.outputs[0] = chunked_array_proxy_id_mda;
}

void Table::getRowAsString(libmexclass::proxy::method::Context& context) {
  namespace mda = ::matlab::data;