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save_point.cpp
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save_point.cpp
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//
// M A R I A D B + +
//
// Copyright Sylvain Rochette Langlois 2013,
// Frantisek Boranek 2015,
// The ViaDuck Project 2016 - 2018.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <algorithm>
#include <mariadb++/connection.hpp>
using namespace mariadb;
namespace {
handle g_save_point_id = 0;
const char *g_save_point_create = "SAVEPOINT ";
const char *g_save_point_rollback = "ROLLBACK TO SAVEPOINT ";
const char *g_save_point_release = "RELEASE SAVEPOINT ";
} // namespace
//
// Constructor
//
save_point::save_point(transaction *trans) : m_transaction(trans) {
m_name = "SP" + std::to_string(++g_save_point_id);
m_transaction->m_connection->execute(g_save_point_create + m_name);
}
//
// Destructor
//
save_point::~save_point() {
if (!m_transaction)
return;
m_transaction->remove_save_point(this);
m_transaction->m_connection->execute(g_save_point_rollback + m_name);
}
//
// Commit the change
//
void save_point::commit() {
if (!m_transaction)
return;
m_transaction->remove_save_point(this);
m_transaction->m_connection->execute(g_save_point_release + m_name);
m_transaction = NULL;
}