for_(func, std::make_index_sequence<N>());
}
-using DbType = std::optional<std::variant<int, double, std::string,
+using DbType = std::optional<std::variant<int64_t, double, std::string,
std::vector<unsigned char>>>;
+class DbException : public std::runtime_error {
+ public:
+ explicit DbException(const std::string& msg, int code = SQLITE_ERROR)
+ : std::runtime_error(msg), code_(code) {
+ }
+
+ DbException(const std::string& msg, int code, const std::string& file,
+ int line) : std::runtime_error(msg), code_(code) {
+ msg_ = msg + " at " + file + ":" + std::to_string(line);
+ }
+
+ int code() const {
+ return code_;
+ }
+
+ const char* msg() const {
+ if (msg_.empty())
+ return what();
+ return msg_.c_str();
+ }
+
+ private:
+ int code_;
+ std::string msg_;
+};
+
class AutoDbType {
public:
AutoDbType() = default;
- AutoDbType(DbType db_type) : db_type_(db_type) {}
+ explicit AutoDbType(DbType db_type, int real_type)
+ : db_type_(db_type), real_type_(real_type) {}
+
+ int GetType() const {
+ return real_type_;
+ }
explicit operator int () {
if (!db_type_)
- throw std::runtime_error("invalid type conversion from nullopt to int");
- return std::get<int>(*db_type_);
+ throw DbException("invalid type conversion from nullopt to int");
+ if (real_type_ != SQLITE_INTEGER)
+ throw DbException("invalid type conversion to int");
+
+ return std::get<int64_t>(*db_type_);
+ }
+
+ explicit operator int64_t () {
+ if (!db_type_)
+ throw DbException("invalid type conversion from nullopt to int64_t");
+ if (real_type_ != SQLITE_INTEGER)
+ throw DbException("invalid type conversion to int64_t");
+
+ return std::get<int64_t>(*db_type_);
}
explicit operator std::string () {
if (!db_type_) {
- throw std::runtime_error(
+ throw DbException(
"invalid type conversion from nullopt to string");
}
+ if (real_type_ != SQLITE_TEXT)
+ throw DbException("invalid type conversion to string");
+
return std::get<std::string>(*db_type_);
}
explicit operator double () {
if (!db_type_) {
- throw std::runtime_error(
+ throw DbException(
"invalid type conversion from nullopt to double");
}
+ if (real_type_ != SQLITE_FLOAT)
+ throw DbException("invalid type conversion to double");
+
return std::get<double>(*db_type_);
}
explicit operator std::vector<unsigned char> () {
if (!db_type_) {
- throw std::runtime_error(
+ throw DbException(
"invalid type conversion from nullopt to std::vector<unsigned char>");
}
+ if (real_type_ != SQLITE_BLOB)
+ throw DbException("invalid type conversion to std::vector<unsigned char>");
+
return std::get<std::vector<unsigned char>>(*db_type_);
}
operator std::optional<int> () {
if (!db_type_)
return std::nullopt;
- return std::get<int>(*db_type_);
+ if (real_type_ != SQLITE_INTEGER)
+ throw DbException("invalid type conversion to int");
+
+ return std::get<int64_t>(*db_type_);
+ }
+
+ operator std::optional<int64_t> () {
+ if (!db_type_)
+ return std::nullopt;
+ if (real_type_ != SQLITE_INTEGER)
+ throw DbException("invalid type conversion to int64_t");
+
+ return std::get<int64_t>(*db_type_);
}
operator std::optional<std::string> () {
if (!db_type_)
return std::nullopt;
+ if (real_type_ != SQLITE_TEXT)
+ throw DbException("invalid type conversion to string");
+
return std::get<std::string>(*db_type_);
}
operator std::optional<double> () {
if (!db_type_)
return std::nullopt;
+ if (real_type_ != SQLITE_FLOAT)
+ throw DbException("invalid type conversion to double");
+
return std::get<double>(*db_type_);
}
operator std::optional<std::vector<unsigned char>> () {
if (!db_type_)
return std::nullopt;
+ if (real_type_ != SQLITE_BLOB)
+ throw DbException("invalid type conversion to std::vector<unsigned char>");
+
return std::get<std::vector<unsigned char>>(*db_type_);
}
private:
DbType db_type_;
+ int real_type_ = SQLITE_NULL;
};
using _ = AutoDbType;
return *this;
}
- TransactionGuard(sqlite3* db) : db_(db) {
- if (sqlite3_exec(db, "BEGIN DEFERRED", nullptr, nullptr, nullptr)
- != SQLITE_OK) {
- throw std::runtime_error("begin transaction failed");
+ explicit TransactionGuard(sqlite3* db) : db_(db) {
+ int r = sqlite3_exec(db, "BEGIN DEFERRED", nullptr, nullptr, nullptr);
+ if (r != SQLITE_OK) {
+ throw DbException("begin transaction failed", r);
}
}
public:
Sql(std::string query) : query_(std::move(query)) {}
+ Sql& Bind(const char* val) {
+ if (val == nullptr) {
+ bindings_.push_back(DbType(std::nullopt));
+ } else {
+ std::string str = val;
+ if (empty_string_as_null_ && str.empty())
+ bindings_.push_back(DbType(std::nullopt));
+ else
+ bindings_.push_back(DbType(std::move(str)));
+ }
+ return *this;
+ }
+
Sql& Bind(std::string val) {
- bindings_.push_back(DbType(std::move(val)));
+ if (empty_string_as_null_ && val.empty())
+ bindings_.push_back(DbType(std::nullopt));
+ else
+ bindings_.push_back(DbType(std::move(val)));
return *this;
}
Sql& Bind(int val) {
+ bindings_.push_back(DbType(static_cast<int64_t>(val)));
+ return *this;
+ }
+
+ Sql& Bind(int64_t val) {
bindings_.push_back(DbType(val));
return *this;
}
}
Sql& Bind(std::vector<unsigned char> val) {
- bindings_.push_back(DbType(std::move(val)));
+ if (empty_vector_as_null_ && val.empty())
+ bindings_.push_back(DbType(std::nullopt));
+ else
+ bindings_.push_back(DbType(std::move(val)));
return *this;
}
return *this;
}
+ Sql& Bind(int pos, const char* val) {
+ if (val == nullptr) {
+ binding_map_[pos] = DbType(std::nullopt);
+ } else {
+ std::string str = val;
+ if (empty_string_as_null_ && str.empty())
+ binding_map_[pos] = DbType(std::nullopt);
+ else
+ binding_map_[pos] = DbType(std::move(str));
+ }
+ return *this;
+ }
+
Sql& Bind(int pos, std::string val) {
- binding_map_[pos] = DbType(std::move(val));
+ if (empty_string_as_null_ && val.empty())
+ binding_map_[pos] = DbType(std::nullopt);
+ else
+ binding_map_[pos] = DbType(std::move(val));
return *this;
}
Sql& Bind(int pos, int val) {
+ binding_map_[pos] = DbType(static_cast<int64_t>(val));
+ return *this;
+ }
+
+ Sql& Bind(int pos, int64_t val) {
binding_map_[pos] = DbType(val);
return *this;
}
}
Sql& Bind(int pos, std::vector<unsigned char> val) {
- binding_map_[pos] = DbType(std::move(val));
+ if (empty_vector_as_null_ && val.empty())
+ binding_map_[pos] = DbType(std::nullopt);
+ else
+ binding_map_[pos] = DbType(std::move(val));
return *this;
}
return *this;
}
+ Sql& Bind(std::string name, const char* val) {
+ if (val == nullptr) {
+ binding_name_map_[std::move(name)] = DbType(std::nullopt);
+ } else {
+ std::string str = val;
+ if (empty_string_as_null_ && str.empty())
+ binding_name_map_[std::move(name)] = DbType(std::nullopt);
+ else
+ binding_name_map_[std::move(name)] = DbType(std::move(str));
+ }
+ return *this;
+ }
+
Sql& Bind(std::string name, std::string val) {
- binding_name_map_[std::move(name)] = DbType(std::move(val));
+ if (empty_string_as_null_ && val.empty())
+ binding_name_map_[std::move(name)] = DbType(std::nullopt);
+ else
+ binding_name_map_[std::move(name)] = DbType(std::move(val));
return *this;
}
Sql& Bind(std::string name, int val) {
+ binding_name_map_[std::move(name)] = DbType(static_cast<int64_t>(val));
+ return *this;
+ }
+
+ Sql& Bind(std::string name, int64_t val) {
binding_name_map_[std::move(name)] = DbType(val);
return *this;
}
}
Sql& Bind(std::string name, std::vector<unsigned char> val) {
- binding_name_map_[std::move(name)] = DbType(std::move(val));
+ if (empty_vector_as_null_ && val.empty())
+ binding_name_map_[std::move(name)] = DbType(std::nullopt);
+ else
+ binding_name_map_[std::move(name)] = DbType(std::move(val));
return *this;
}
return query_;
}
+ Sql& SetEmptyStringAsNull(bool as_null) {
+ empty_string_as_null_ = as_null;
+ return *this;
+ }
+
+ Sql& SetEmptyVectorAsNull(bool as_null) {
+ empty_vector_as_null_ = as_null;
+ return *this;
+ }
+
+ Sql& Reset() {
+ bindings_.clear();
+ binding_map_.clear();
+ binding_name_map_.clear();
+ empty_string_as_null_ = false;
+ empty_vector_as_null_ = false;
+ return *this;
+ }
+
private:
std::string query_;
std::vector<DbType> bindings_;
std::map<int, DbType> binding_map_;
std::map<std::string, DbType> binding_name_map_;
+ bool empty_string_as_null_ = false;
+ bool empty_vector_as_null_ = false;
};
class Result {
Result(Result&& r) noexcept {
stmt_ = r.stmt_;
r.stmt_ = nullptr;
+ query_ = std::move(r.query_);
+ is_done_ = r.is_done_;
}
Result& operator = (Result&& r) noexcept {
sqlite3_finalize(stmt_);
stmt_ = r.stmt_;
r.stmt_ = nullptr;
+ query_ = std::move(r.query_);
+ is_done_ = r.is_done_;
}
return *this;
class Record {
public:
- Record(const sqlite3_stmt* stmt) : stmt_(stmt) {}
+ explicit Record(const sqlite3_stmt* stmt) : stmt_(stmt) {}
+
+ std::optional<std::string> GetString(int pos) const {
+ sqlite3_stmt* stmt = const_cast<sqlite3_stmt*>(stmt_);
+ const char* text = reinterpret_cast<const char*>(
+ sqlite3_column_text(stmt, pos));
+ if (!text)
+ return std::nullopt;
+
+ return text;
+ }
AutoDbType Get(int pos) const {
sqlite3_stmt* stmt = const_cast<sqlite3_stmt*>(stmt_);
dbt = DbType(reinterpret_cast<const char*>(
sqlite3_column_text(stmt, pos)));
} else if (type == SQLITE_INTEGER) {
- dbt = DbType(sqlite3_column_int(stmt, pos));
+ dbt = DbType(static_cast<int64_t>(sqlite3_column_int64(stmt, pos)));
} else if (type == SQLITE_FLOAT) {
dbt = DbType(sqlite3_column_double(stmt, pos));
} else if (type == SQLITE_BLOB) {
int len = sqlite3_column_bytes(stmt, pos);
if (!val || len < 0) {
- throw std::runtime_error("invalid blob");;
+ throw DbException("invalid blob");;
} else {
dbt = DbType(std::vector<unsigned char>(val, val + len));
}
} else if (type == SQLITE_NULL) {
dbt = DbType(std::nullopt);
} else {
- throw std::runtime_error("invalid column type");
+ throw DbException("invalid column type", type);
}
- return AutoDbType(dbt);
+ return AutoDbType(dbt, type);
}
template <typename ...Types>
class Iterator {
public:
- Iterator(sqlite3_stmt* stmt) : stmt_(stmt) {}
+ explicit Iterator(sqlite3_stmt* stmt) : stmt_(stmt) {}
Record operator*() { return Record(stmt_); }
};
Iterator begin() const {
+ if (is_done_)
+ return Iterator(nullptr);
return Iterator(stmt_);
}
return Iterator(nullptr);
}
- explicit operator bool() {
+ operator bool() const {
if (stmt_ == nullptr)
return false;
return true;
}
- explicit operator int() {
+ explicit operator int() const {
if (db_ == nullptr)
return SQLITE_ERROR;
return sqlite3_errcode(db_);
}
- operator const char*() {
+ explicit operator const char*() const {
if (db_ == nullptr)
return "";
return sqlite3_errmsg(db_);
return std::nullopt;
}
+ sqlite3_stmt* GetRaw() const {
+ return stmt_;
+ }
+
+ const std::string& GetQuery() const {
+ return query_;
+ }
+
+ void SetDone(bool is_done) {
+ is_done_ = is_done;
+ }
+
+ size_t GetColumnCount() const {
+ return sqlite3_column_count(stmt_);
+ }
+
private:
friend class Database;
- Result(sqlite3_stmt* stmt, sqlite3* db) : stmt_(stmt), db_(db) {}
+ Result(sqlite3_stmt* stmt, sqlite3* db, std::string query, bool is_done)
+ : stmt_(stmt), db_(db), query_(std::move(query)), is_done_(is_done) {}
sqlite3_stmt* stmt_ = nullptr;
sqlite3* db_ = nullptr;
+ std::string query_;
+ bool is_done_ = false;
};
Database(std::string db, int flags) {
int r = sqlite3_open_v2(db.c_str(), &db_, flags, nullptr);
if (r != SQLITE_OK)
- throw std::runtime_error("open failed");
+ throw DbException("open failed", r);
}
Database(std::string db, int flags, std::function<bool(int)> busy_handler) {
int r = sqlite3_open_v2(db.c_str(), &db_, flags, nullptr);
if (r != SQLITE_OK)
- throw std::runtime_error("sqlite3_open_v2() failed");
+ throw DbException("sqlite3_open_v2() failed", r);
busy_handler_ = std::move(busy_handler);
r = sqlite3_busy_handler(db_, [](void* data, int count) {
if (r != SQLITE_OK) {
sqlite3_close_v2(db_);
- throw std::runtime_error("sqlite3_busy_handler() failed");
+ throw DbException("sqlite3_busy_handler() failed", r);
}
}
db.db_ = nullptr;
}
- explicit operator bool() {
+ explicit operator bool() const {
if (db_ == nullptr)
return false;
return true;
return *this;
}
- TransactionGuard CreateTransactionGuard() {
+ TransactionGuard CreateTransactionGuard() const {
return TransactionGuard(db_);
}
+ Result Prepare(const Sql& sql) const {
+ if (!db_)
+ throw DbException("Not opened");
+
+ sqlite3_stmt* stmt = nullptr;
+ int r = sqlite3_prepare_v2(db_, sql.GetQuery().c_str(),
+ -1, &stmt, nullptr);
+ if (r != SQLITE_OK)
+ return { nullptr, nullptr, "", true };
+ return { stmt, db_, sql.GetQuery(), false };
+ }
+
Result Exec(const Sql& sql) const {
if (!db_)
- throw std::runtime_error("Not opened");
+ throw DbException("Not opened");
sqlite3_stmt* stmt = nullptr;
int r = sqlite3_prepare_v2(db_, sql.GetQuery().c_str(),
-1, &stmt, nullptr);
if (r != SQLITE_OK) {
- return { nullptr, nullptr };
+ return { nullptr, nullptr, "", true };
}
std::unique_ptr<sqlite3_stmt, decltype(sqlite3_finalize)*> stmt_auto(stmt,
for (const auto& i : sql.GetBindingNameMap()) {
int pos = sqlite3_bind_parameter_index(stmt, i.first.c_str());
if (pos == 0)
- throw std::runtime_error("Invalid binding");
+ throw DbException("Invalid binding");
Bind(pos, i.second, stmt);
}
r = sqlite3_step(stmt);
if (r != SQLITE_ROW && r != SQLITE_DONE) {
- return { nullptr, db_ };
+ return { nullptr, db_, "", true };
+ }
+
+ return { stmt_auto.release(), db_, sql.GetQuery(),
+ r == SQLITE_DONE ? true : false };
+ }
+
+ bool Exec(const Sql& sql, Result& previous_stmt) const {
+ if (sql.GetQuery() != previous_stmt.GetQuery())
+ throw DbException("Query is different");
+
+ sqlite3_stmt* stmt = previous_stmt.GetRaw();
+ if (!stmt)
+ return false;
+
+ int r = sqlite3_reset(stmt);
+ if (r != SQLITE_ROW && r != SQLITE_DONE && r != SQLITE_OK)
+ return false;
+
+ int pos = 1;
+ for (const auto& i : sql.GetBindings()) {
+ Bind(pos++, i, stmt);
}
- return { stmt_auto.release(), db_ };
+ for (const auto& i : sql.GetBindingMap()) {
+ Bind(i.first, i.second, stmt);
+ }
+
+ for (const auto& i : sql.GetBindingNameMap()) {
+ int pos = sqlite3_bind_parameter_index(stmt, i.first.c_str());
+ if (pos == 0)
+ throw DbException("Invalid binding");
+ Bind(pos, i.second, stmt);
+ }
+
+ r = sqlite3_step(stmt);
+ if (r != SQLITE_ROW && r != SQLITE_DONE)
+ return false;
+
+ previous_stmt.SetDone(r == SQLITE_DONE ? true : false);
+ return true;
+ }
+
+ void OneStepExec(const Sql& sql) const {
+ char* errmsg = nullptr;
+ int ret = sqlite3_exec(db_, sql.GetQuery().c_str(), nullptr, nullptr,
+ &errmsg);
+ if (ret != SQLITE_OK) {
+ std::unique_ptr<char, decltype(sqlite3_free)*> errmsg_auto(
+ errmsg, sqlite3_free);
+ throw DbException(errmsg);
+ }
+ }
+
+ sqlite3* GetRaw() const {
+ if (!db_)
+ throw DbException("Not opened");
+ return db_;
}
private:
if (!type) {
r = sqlite3_bind_null(stmt, pos);
if (r != SQLITE_OK) {
- throw std::runtime_error("Invalid binding");
+ throw DbException("Invalid binding", r);
}
return;
if (const std::string* pstr = std::get_if<std::string>(&(*type))) {
r = sqlite3_bind_text(stmt, pos, (*pstr).c_str(), -1,
SQLITE_TRANSIENT);
- } else if (const int* pint = std::get_if<int>(&(*type))) {
- r = sqlite3_bind_int(stmt, pos, (*pint));
+ } else if (const int64_t* pint = std::get_if<int64_t>(&(*type))) {
+ r = sqlite3_bind_int64(stmt, pos, (*pint));
} else if (const double* pdouble = std::get_if<double>(&(*type))) {
r = sqlite3_bind_double(stmt, pos, (*pdouble));
} else if (const std::vector<unsigned char>* pvector =
}
if (r != SQLITE_OK) {
- throw std::runtime_error("Invalid binding");
+ throw DbException("Invalid binding");
}
}
projects / platform / core / base / bundle.git / blobdiff