static void _to_serializable(flexible_type& data, schema_t& schema, const gl_sframe& input) {
schema.insert(std::make_pair("type", JSON::types::SFRAME));
flex_dict data_dict;
flex_list column_names;
for (const auto& name : input.column_names()) {
column_names.push_back(name);
}
data_dict.push_back(std::make_pair("column_names", column_names));
std::vector<flexible_type> columns;
for (const auto& name : column_names) {
const auto& column = input.select_column(name);
flexible_type serialized_column;
schema_t serialized_schema;
_any_to_serializable(serialized_column, serialized_schema, column);
columns.push_back(serialized_column);
}
data_dict.push_back(std::make_pair("columns", columns));
data = data_dict;
}
void gl_gframe::add_columns(const gl_sframe& data) {
for (const auto& k: data.column_names()) {
add_column(data[k], k);
}
}