Method getFieldByName

matlab/src/cpp/arrow/matlab/array/proxy/struct_array.cc:121–147

}

void StructArray::getFieldByName(libmexclass::proxy::method::Context& context) {
  namespace mda = ::matlab::data;
  using libmexclass::proxy::ProxyManager;

  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);

  auto struct_array = std::static_pointer_cast<arrow::StructArray>(array);
  auto field_array = struct_array->GetFieldByName(name);
  if (!field_array) {
    // Return an error if we could not query the field by name.
    const auto msg = "Could not find field named " + name + ".";
    context.error =
        libmexclass::error::Error{error::ARROW_TABULAR_SCHEMA_AMBIGUOUS_FIELD_NAME, msg};
    return;
  }

  // Wrap the array within a proxy object if possible.
  MATLAB_ASSIGN_OR_ERROR_WITH_CONTEXT(context.outputs[0],
                                      arrow::matlab::proxy::wrap_and_manage(field_array),
                                      context, error::UNKNOWN_PROXY_FOR_ARRAY_TYPE);
}

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