sql_connect_base.hpp

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#ifndef NEFORCE_DATABASE_SQL_CONNECT_BASE_HPP__
#define NEFORCE_DATABASE_SQL_CONNECT_BASE_HPP__

 
#include "NeForce/db/db_interface.hpp"
NEFORCE_BEGIN_NAMESPACE__


template <typename Derived>
struct sql_connect_base : idb_tb_connect {
private:
    Derived& derived() noexcept { return static_cast<Derived&>(*this); }
    const Derived& derived() const noexcept { return static_cast<const Derived&>(*this); }
 
public:
    bool begin() final { return derived().update(derived().begin_sql()); }
    bool commit() final { return derived().update(derived().commit_sql()); }
    bool rollback() final { return derived().update(derived().rollback_sql()); }
 
    NEFORCE_NODISCARD void* native_handle() noexcept final { return static_cast<Derived*>(this)->link_; }
 
    NEFORCE_NODISCARD bool table_exists(const string& table) const override {
        auto result = derived().query(derived().table_exists_query(table));
        return result != nullptr && result->row_count() > 0;
    }
};
 // Database
 
NEFORCE_END_NAMESPACE__
#endif // NEFORCE_DATABASE_SQL_CONNECT_BASE_HPP__