diff options
Diffstat (limited to 'src/database/database.hpp')
| -rw-r--r-- | src/database/database.hpp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/database/database.hpp b/src/database/database.hpp index c00c938..f4b2ecd 100644 --- a/src/database/database.hpp +++ b/src/database/database.hpp @@ -13,6 +13,7 @@ #include <string> #include <memory> +#include <map> class Database @@ -140,7 +141,41 @@ class Database static RosterTable roster; static sqlite3* db; + /** + * Some caches, to avoid doing very frequent query requests for a few options. + */ + using CacheKey = std::tuple<std::string, std::string, std::string>; + + static EncodingIn::real_type get_encoding_in(const std::string& owner, + const std::string& server, + const std::string& channel) + { + CacheKey channel_key{owner, server, channel}; + auto it = Database::encoding_in_cache.find(channel_key); + if (it == Database::encoding_in_cache.end()) + { + auto options = Database::get_irc_channel_options_with_server_default(owner, server, channel); + EncodingIn::real_type result = options.col<Database::EncodingIn>(); + if (result.empty()) + result = "ISO-8859-1"; + it = Database::encoding_in_cache.insert(std::make_pair(channel_key, result)).first; + } + return it->second; + } + static void invalidate_encoding_in_cache(const std::string& owner, + const std::string& server, + const std::string& channel) + { + CacheKey channel_key{owner, server, channel}; + Database::encoding_in_cache.erase(channel_key); + } + static void invalidate_encoding_in_cache() + { + Database::encoding_in_cache.clear(); + } + private: static std::string gen_uuid(); + static std::map<CacheKey, EncodingIn::real_type> encoding_in_cache; }; #endif /* USE_DATABASE */ |