pub trait GenericConnection {
    // ...

    /// New method on GenericConnection; sends a simple "Query" frame
    ///
    /// Returns `Vec<TextRows>` since there may be multiple, semicolon delimited
    /// queries in the `query` string. From a protocol level, each query yields T, D, C
    /// (row description, data row(s), command completion), and finally a "ready
    /// for query" frame Z is returned.
    fn simple_query(&self, query: &str) -> Result<Vec<TextRows>>;
}

/// Result of one query sent via the `simple_query` API.
struct TextRows {
    /// Result of parsing Row description for query
    columns: Vec<Column>,
    /// Data rows returned in text format
    rows: Vec<RowData>,
}

/// One Row whose data is only available in string format
struct TextRow {
    columns: &[Column],
    raw: &RowData,
}

// Mirror existing Rows/Row APIs where it makes sense
impl IntoIterator for &TextRows {}
impl TextRows {
    fn columns(&self) -> &[Column];
    fn len(&self) -> usize;
    fn is_empty(&self) -> bool;
    fn get(&self, idx) -> TextRow;
    fn iter(&self) -> TextRowIter;
}

impl TextRow {
    fn columns(&self) -> &[Column];
    fn len(&self) -> usize;
    fn is_empty(&self) -> bool;
    fn get<I: RowIndex>(&self, idx: I) -> &str;
    fn get_opt<I: RowIndex>(&self, idx: I) -> Option<Result<&str>>;
}