// Matrix Construct // // Copyright (C) Matrix Construct Developers, Authors & Contributors // Copyright (C) 2016-2018 Jason Volk <jason@zemos.net> // // Permission to use, copy, modify, and/or distribute this software for any // purpose with or without fee is hereby granted, provided that the above // copyright notice and this permission notice is present in all copies. The // full license for this software is available in the LICENSE file. #pragma once #define HAVE_IRCD_DB_MERGE_H namespace ircd::db { using merge_delta = std::pair<string_view, string_view>; using merge_closure = std::function<std::string (const string_view &key, const merge_delta &)>; using update_closure = std::function<std::string (const string_view &key, merge_delta &)>; std::string merge_operator(const string_view &, const std::pair<string_view, string_view> &); }