mirror of
https://github.com/vcmi/vcmi.git
synced 2024-12-10 09:50:17 +02:00
126 lines
3.3 KiB
C++
126 lines
3.3 KiB
C++
/*
|
|
* SQLiteConnection.h, part of VCMI engine
|
|
*
|
|
* Authors: listed in file AUTHORS in main folder
|
|
*
|
|
* License: GNU General Public License v2.0 or later
|
|
* Full text of license available in license.txt file, in main folder
|
|
*
|
|
*/
|
|
#pragma once
|
|
|
|
using sqlite3 = struct sqlite3;
|
|
using sqlite3_stmt = struct sqlite3_stmt;
|
|
|
|
class SQLiteInstance;
|
|
class SQLiteStatement;
|
|
|
|
using SQLiteInstancePtr = std::unique_ptr<SQLiteInstance>;
|
|
using SQLiteStatementPtr = std::unique_ptr<SQLiteStatement>;
|
|
|
|
class SQLiteStatement : boost::noncopyable
|
|
{
|
|
public:
|
|
friend class SQLiteInstance;
|
|
|
|
bool execute();
|
|
void reset();
|
|
void clear();
|
|
|
|
~SQLiteStatement();
|
|
|
|
template<typename... Args>
|
|
void executeOnce(const Args &... args)
|
|
{
|
|
setBinds(args...);
|
|
execute();
|
|
reset();
|
|
}
|
|
|
|
template<typename... Args>
|
|
void setBinds(const Args &... args)
|
|
{
|
|
setBindSingle(1, args...); // The leftmost SQL parameter has an index of 1
|
|
}
|
|
|
|
template<typename... Args>
|
|
void getColumns(Args &... args)
|
|
{
|
|
getColumnSingle(0, args...); // The leftmost column of the result set has the index 0
|
|
}
|
|
|
|
private:
|
|
void setBindSingle(size_t index, const double & value);
|
|
void setBindSingle(size_t index, const bool & value);
|
|
void setBindSingle(size_t index, const uint8_t & value);
|
|
void setBindSingle(size_t index, const uint16_t & value);
|
|
void setBindSingle(size_t index, const uint32_t & value);
|
|
void setBindSingle(size_t index, const int32_t & value);
|
|
void setBindSingle(size_t index, const int64_t & value);
|
|
void setBindSingle(size_t index, const std::string & value);
|
|
void setBindSingle(size_t index, const char * value);
|
|
|
|
void getColumnSingle(size_t index, double & value);
|
|
void getColumnSingle(size_t index, bool & value);
|
|
void getColumnSingle(size_t index, uint8_t & value);
|
|
void getColumnSingle(size_t index, uint16_t & value);
|
|
void getColumnSingle(size_t index, uint32_t & value);
|
|
void getColumnSingle(size_t index, int32_t & value);
|
|
void getColumnSingle(size_t index, int64_t & value);
|
|
void getColumnSingle(size_t index, std::string & value);
|
|
|
|
template < typename T, typename std::enable_if_t < std::is_enum_v<T>, int > = 0 >
|
|
void getColumnSingle(size_t index, T & value)
|
|
{
|
|
using Integer = std::underlying_type_t<T>;
|
|
Integer result;
|
|
getColumnSingle(index, result);
|
|
|
|
value = static_cast<T>(result);
|
|
}
|
|
|
|
template<typename Rep, typename Period>
|
|
void getColumnSingle(size_t index, std::chrono::duration<Rep, Period> & value)
|
|
{
|
|
int64_t durationValue = 0;
|
|
getColumnSingle(index, durationValue);
|
|
value = std::chrono::duration<Rep, Period>(durationValue);
|
|
}
|
|
|
|
SQLiteStatement(SQLiteInstance & instance, sqlite3_stmt * statement);
|
|
|
|
template<typename T, typename... Args>
|
|
void setBindSingle(size_t index, T const & arg, const Args &... args)
|
|
{
|
|
setBindSingle(index, arg);
|
|
setBindSingle(index + 1, args...);
|
|
}
|
|
|
|
template<typename T, typename... Args>
|
|
void getColumnSingle(size_t index, T & arg, Args &... args)
|
|
{
|
|
getColumnSingle(index, arg);
|
|
getColumnSingle(index + 1, args...);
|
|
}
|
|
|
|
SQLiteInstance & m_instance;
|
|
sqlite3_stmt * m_statement;
|
|
};
|
|
|
|
class SQLiteInstance : boost::noncopyable
|
|
{
|
|
public:
|
|
friend class SQLiteStatement;
|
|
|
|
static SQLiteInstancePtr open(const boost::filesystem::path & db_path, bool allow_write);
|
|
|
|
~SQLiteInstance();
|
|
|
|
SQLiteStatementPtr prepare(const std::string & statement);
|
|
|
|
private:
|
|
explicit SQLiteInstance(sqlite3 * connection);
|
|
|
|
sqlite3 * m_connection;
|
|
};
|