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#pragma once
/**
* Interface to provide non-portable behaviour, specific to each
* database engine we want to support.
*
* Everything else (all portable stuf) should go outside of this class.
*/
#include <database/statement.hpp>
#include <memory>
#include <string>
#include <vector>
#include <tuple>
#include <map>
#include <set>
class DatabaseEngine
{
public:
DatabaseEngine() = default;
virtual ~DatabaseEngine() = default;
DatabaseEngine(const DatabaseEngine&) = delete;
DatabaseEngine& operator=(const DatabaseEngine&) = delete;
DatabaseEngine(DatabaseEngine&&) = delete;
DatabaseEngine& operator=(DatabaseEngine&&) = delete;
enum class EngineType { None, Postgresql, Sqlite3, };
virtual EngineType engine_type() const = 0;
virtual std::map<std::string, std::string> get_all_columns_from_table(const std::string& table_name) = 0;
virtual std::tuple<bool, std::string> raw_exec(const std::string& query) = 0;
virtual std::unique_ptr<Statement> prepare(const std::string& query) = 0;
virtual void extract_last_insert_rowid(Statement& statement) = 0;
virtual std::string get_returning_id_sql_string(const std::string&)
{
return {};
}
virtual void convert_date_format(DatabaseEngine&) = 0;
virtual std::string id_column_type() const = 0;
virtual std::string datetime_column_type() const = 0;
virtual long double epoch_to_floating_value(long double seconds) const = 0;
virtual std::string escape_param_number(int nb) const
{
return "$" + std::to_string(nb);
}
virtual void init_session()
{
}
int64_t last_inserted_rowid{-1};
};
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