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mdbx++: добавление перегрузок со std::string_view для методов open_map/create_map_/drop_map/clear_map/rename_map().

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This commit is contained in:
Леонид Юрьев (Leonid Yuriev)
2024-03-30 17:38:53 +03:00
parent cce5c8249c
commit e9a49e3715
2 changed files with 182 additions and 20 deletions
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131
mdbx.h++
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@@ -4353,6 +4353,37 @@ public:
bool rename_map(const ::std::string &old_name, const ::std::string &new_name,
bool throw_if_absent = false);
#if defined(DOXYGEN) || \
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
/// \brief Open existing key-value map.
inline map_handle open_map(
const ::std::string_view &name,
const ::mdbx::key_mode key_mode = ::mdbx::key_mode::usual,
const ::mdbx::value_mode value_mode = ::mdbx::value_mode::single) const;
/// \brief Create new or open existing key-value map.
inline map_handle
create_map(const ::std::string_view &name,
const ::mdbx::key_mode key_mode = ::mdbx::key_mode::usual,
const ::mdbx::value_mode value_mode = ::mdbx::value_mode::single);
/// \brief Drop key-value map.
/// \return `True` if the key-value map existed and was deleted, either
/// `false` if the key-value map did not exist and there is nothing to delete.
bool drop_map(const ::std::string_view &name, bool throw_if_absent = false);
/// \return `True` if the key-value map existed and was cleared, either
/// `false` if the key-value map did not exist and there is nothing to clear.
bool clear_map(const ::std::string_view &name, bool throw_if_absent = false);
/// \brief Переименовывает таблицу ключ-значение.
inline void rename_map(map_handle map, const ::std::string_view &new_name);
/// \brief Переименовывает таблицу ключ-значение.
/// \return `True` если таблица существует и была переименована, либо
/// `false` в случае отсутствия исходной таблицы.
bool rename_map(const ::std::string_view &old_name,
const ::std::string_view &new_name,
bool throw_if_absent = false);
#endif /* __cpp_lib_string_view >= 201606L */
using map_stat = ::MDBX_stat;
/// \brief Returns statistics for a sub-database.
inline map_stat get_map_stat(map_handle map) const;
@@ -6294,12 +6325,6 @@ txn::open_map(const char *name, const ::mdbx::key_mode key_mode,
return map;
}
inline ::mdbx::map_handle
txn::open_map(const ::std::string &name, const ::mdbx::key_mode key_mode,
const ::mdbx::value_mode value_mode) const {
return open_map(name.c_str(), key_mode, value_mode);
}
inline ::mdbx::map_handle txn::create_map(const char *name,
const ::mdbx::key_mode key_mode,
const ::mdbx::value_mode value_mode) {
@@ -6312,36 +6337,102 @@ inline ::mdbx::map_handle txn::create_map(const char *name,
return map;
}
inline ::mdbx::map_handle txn::create_map(const ::std::string &name,
const ::mdbx::key_mode key_mode,
const ::mdbx::value_mode value_mode) {
return create_map(name.c_str(), key_mode, value_mode);
}
inline void txn::drop_map(map_handle map) {
error::success_or_throw(::mdbx_drop(handle_, map.dbi, true));
}
inline bool txn::drop_map(const ::std::string &name, bool throw_if_absent) {
return drop_map(name.c_str(), throw_if_absent);
}
inline void txn::clear_map(map_handle map) {
error::success_or_throw(::mdbx_drop(handle_, map.dbi, false));
}
inline bool txn::clear_map(const ::std::string &name, bool throw_if_absent) {
return clear_map(name.c_str(), throw_if_absent);
}
inline void txn::rename_map(map_handle map, const char *new_name) {
error::success_or_throw(::mdbx_dbi_rename(handle_, map, new_name));
}
#if defined(DOXYGEN) || \
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
inline ::mdbx::map_handle
txn::open_map(const ::std::string_view &name, const ::mdbx::key_mode key_mode,
const ::mdbx::value_mode value_mode) const {
::mdbx::map_handle map;
error::success_or_throw(::mdbx_dbi_open2(
handle_, ::mdbx::slice(name),
MDBX_db_flags_t(key_mode) | MDBX_db_flags_t(value_mode), &map.dbi));
assert(map.dbi != 0);
return map;
}
inline ::mdbx::map_handle txn::create_map(const ::std::string_view &name,
const ::mdbx::key_mode key_mode,
const ::mdbx::value_mode value_mode) {
::mdbx::map_handle map;
error::success_or_throw(::mdbx_dbi_open2(
handle_, ::mdbx::slice(name),
MDBX_CREATE | MDBX_db_flags_t(key_mode) | MDBX_db_flags_t(value_mode),
&map.dbi));
assert(map.dbi != 0);
return map;
}
inline void txn::rename_map(map_handle map,
const ::std::string_view &new_name) {
error::success_or_throw(
::mdbx_dbi_rename2(handle_, map, ::mdbx::slice(new_name)));
}
inline ::mdbx::map_handle
txn::open_map(const ::std::string &name, const ::mdbx::key_mode key_mode,
const ::mdbx::value_mode value_mode) const {
return open_map(::std::string_view(name), key_mode, value_mode);
}
inline ::mdbx::map_handle txn::create_map(const ::std::string &name,
const ::mdbx::key_mode key_mode,
const ::mdbx::value_mode value_mode) {
return create_map(::std::string_view(name), key_mode, value_mode);
}
inline bool txn::drop_map(const ::std::string &name, bool throw_if_absent) {
return drop_map(::std::string_view(name), throw_if_absent);
}
inline bool txn::clear_map(const ::std::string &name, bool throw_if_absent) {
return clear_map(::std::string_view(name), throw_if_absent);
}
inline void txn::rename_map(map_handle map, const ::std::string &new_name) {
return rename_map(map, ::std::string_view(new_name));
}
#else
inline ::mdbx::map_handle
txn::open_map(const ::std::string &name, const ::mdbx::key_mode key_mode,
const ::mdbx::value_mode value_mode) const {
return open_map(name.c_str(), key_mode, value_mode);
}
inline ::mdbx::map_handle txn::create_map(const ::std::string &name,
const ::mdbx::key_mode key_mode,
const ::mdbx::value_mode value_mode) {
return create_map(name.c_str(), key_mode, value_mode);
}
inline bool txn::drop_map(const ::std::string &name, bool throw_if_absent) {
return drop_map(name.c_str(), throw_if_absent);
}
inline bool txn::clear_map(const ::std::string &name, bool throw_if_absent) {
return clear_map(name.c_str(), throw_if_absent);
}
inline void txn::rename_map(map_handle map, const ::std::string &new_name) {
return rename_map(map, new_name.c_str());
}
#endif /* __cpp_lib_string_view >= 201606L */
inline txn::map_stat txn::get_map_stat(map_handle map) const {
txn::map_stat r;
error::success_or_throw(::mdbx_dbi_stat(handle_, map.dbi, &r, sizeof(r)));