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mdbx++: добавление mdbx::cursor::put_multiple_samelength().

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Леонид Юрьев (Leonid Yuriev) 2025-03-17 11:53:14 +03:00
parent 7a923b3d41
commit 71d95d1a5f
1 changed files with 36 additions and 2 deletions
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38
mdbx.h++
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@ -4100,8 +4100,9 @@ public:
return append(map, kv.key, kv.value, multivalue_order_preserved);
}
size_t put_multiple_samelength(map_handle map, const slice &key, const size_t value_length, const void *values_array,
size_t values_count, put_mode mode, bool allow_partial = false);
inline size_t put_multiple_samelength(map_handle map, const slice &key, const size_t value_length,
const void *values_array, size_t values_count, put_mode mode,
bool allow_partial = false);
template <typename VALUE>
size_t put_multiple_samelength(map_handle map, const slice &key, const VALUE *values_array, size_t values_count,
put_mode mode, bool allow_partial = false) {
@ -4567,6 +4568,21 @@ public:
/// \brief Seeks and removes the particular multi-value entry of the key.
/// \return `True` if the given key-value pair is found and removed.
inline bool erase(const slice &key, const slice &value);
inline size_t put_multiple_samelength(const slice &key, const size_t value_length, const void *values_array,
size_t values_count, put_mode mode, bool allow_partial = false);
template <typename VALUE>
size_t put_multiple_samelength(const slice &key, const VALUE *values_array, size_t values_count, put_mode mode,
bool allow_partial = false) {
static_assert(::std::is_standard_layout<VALUE>::value && !::std::is_pointer<VALUE>::value &&
!::std::is_array<VALUE>::value,
"Must be a standard layout type!");
return put_multiple_samelength(key, sizeof(VALUE), values_array, values_count, mode, allow_partial);
}
template <typename VALUE>
void put_multiple_samelength(const slice &key, const ::std::vector<VALUE> &vector, put_mode mode) {
put_multiple_samelength(key, vector.data(), vector.size(), mode);
}
};
/// \brief Managed cursor.
@ -6354,6 +6370,24 @@ inline bool cursor::erase(const slice &key, const slice &value) {
return data.done && erase();
}
inline size_t cursor::put_multiple_samelength(const slice &key, const size_t value_length, const void *values_array,
size_t values_count, put_mode mode, bool allow_partial) {
MDBX_val args[2] = {{const_cast<void *>(values_array), value_length}, {nullptr, values_count}};
const int err = ::mdbx_cursor_put(handle_, const_cast<slice *>(&key), args, MDBX_put_flags_t(mode) | MDBX_MULTIPLE);
switch (err) {
case MDBX_SUCCESS:
MDBX_CXX20_LIKELY break;
case MDBX_KEYEXIST:
if (allow_partial)
break;
mdbx_txn_break(txn());
MDBX_CXX17_FALLTHROUGH /* fallthrough */;
default:
MDBX_CXX20_UNLIKELY error::throw_exception(err);
}
return args[1].iov_len /* done item count */;
}
/// end cxx_api @}
} // namespace mdbx