Function mz_acl_explode

src/expr/src/relation/func.rs:3509–3532

(
    mz_acl_items: Datum<'a>,
    temp_storage: &'a RowArena,
)

}

fn mz_acl_explode<'a>(
    mz_acl_items: Datum<'a>,
    temp_storage: &'a RowArena,
) -> Result<impl Iterator<Item = (Row, Diff)> + 'a, EvalError> {
    let mz_acl_items = mz_acl_items.unwrap_array();
    let mut res = Vec::new();
    for mz_acl_item in mz_acl_items.elements().iter() {
        if mz_acl_item.is_null() {
            return Err(EvalError::MzAclArrayNullElement);
        }
        let mz_acl_item = mz_acl_item.unwrap_mz_acl_item();
        for privilege in mz_acl_item.acl_mode.explode() {
            let row = [
                Datum::String(temp_storage.push_string(mz_acl_item.grantor.to_string())),
                Datum::String(temp_storage.push_string(mz_acl_item.grantee.to_string())),
                Datum::String(temp_storage.push_string(privilege.to_string())),
                // GRANT OPTION is not implemented, so we hardcode false.
                Datum::False,
            ];
            res.push((Row::pack_slice(&row), Diff::ONE));
        }
    }
    Ok(res.into_iter())
}

/// When adding a new `TableFunc` variant, please consider adding it to
/// `TableFunc::with_ordinality`!