Function CreateRead

cpp/src/arrow/engine/substrait/test_plan_builder.cc:49–62

const ConversionOptions kPlanBuilderConversionOptions;

Result<std::unique_ptr<substrait::ReadRel>> CreateRead(const Table& table,
                                                       ExtensionSet* ext_set) {
  auto read = std::make_unique<substrait::ReadRel>();

  ARROW_ASSIGN_OR_RAISE(std::unique_ptr<substrait::NamedStruct> schema,
                        ToProto(*table.schema(), ext_set, kPlanBuilderConversionOptions));
  read->set_allocated_base_schema(schema.release());

  auto named_table = std::make_unique<substrait::ReadRel::NamedTable>();
  named_table->add_names("test");
  read->set_allocated_named_table(named_table.release());

  return read;
}

void CreateDirectReference(int32_t index, substrait::Expression* expr) {
  auto reference = std::make_unique<substrait::Expression::FieldReference>();