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内存优化

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种太阳的热带美短
2026-08-28 11:49:06 +08:00
parent e26f7eb52f
commit fa1e7e24fc
21 changed files with 722 additions and 237 deletions
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module/Local_Server/External_Database/External_Database.cpp
+8 -16
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@@ -205,38 +205,30 @@ External_Resource_Status External_Resources::clear_table(SQLite::Database& db, c
}
std::optional<External_Database_Row>
External_Resources::query_one(SQLite::Database& db, const std::vector<std::string>& primary_key_values) const
{
External_Resources::query_one(SQLite::Database& db, const std::vector<std::string>& primary_key_values) const {
const auto& columns = primary_key_columns();
if (columns.size() != primary_key_values.size())
{
if (columns.size() != primary_key_values.size()) {
throw std::invalid_argument("primary key value count mismatch for resource: " + name);
}
std::string sql = "SELECT * FROM " + External_Database_Utils::quote_identifier(name) + " WHERE ";
for (std::size_t index = 0; index < columns.size(); ++index)
{
for (std::size_t index = 0; index < columns.size(); ++index) {
if (index != 0)
sql += " AND ";
sql += External_Database_Utils::quote_identifier(columns[index]) + " = ? COLLATE NOCASE";
sql += External_Database_Utils::quote_identifier(columns[index]) + " = ?";
}
sql += " LIMIT 1";
SQLite::Statement statement(db, sql);
for (std::size_t index = 0; index < primary_key_values.size(); ++index)
{
for (std::size_t index = 0; index < primary_key_values.size(); ++index) {
statement.bind(static_cast<int>(index + 1), External_Database_Utils::normalize_key(primary_key_values[index]));
}
if (!statement.executeStep())
return std::nullopt;
External_Database_Row row;
for (int index = 0; index < statement.getColumnCount(); ++index)
{
for (int index = 0; index < statement.getColumnCount(); ++index) {
const auto name = statement.getColumnName(index);
if (statement.isColumnNull(index))
{
if (statement.isColumnNull(index)) {
row.columns.emplace(name, std::nullopt);
}
else
{
} else {
row.columns.emplace(name, statement.getColumn(index).getString());
}
}