/usr/include/tntdb/transaction.h is in libtntdb-dev 1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 | /*
* Copyright (C) 2005 Tommi Maekitalo
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef TNTDB_TRANSACTION_H
#define TNTDB_TRANSACTION_H
#include <tntdb/connection.h>
#include <cxxtools/noncopyable.h>
namespace tntdb
{
/**
* The class Transaction monitors the state of a transaction on a database-conection.
*
* The constructor starts by default a transaction on the database. The transactionstate
* is hold it the class. The destructor rolls the transaction back, when not explicitely
* commited or rolled back.
*/
class Transaction : private cxxtools::NonCopyable
{
Connection db;
bool active;
public:
/**
* Start a transaction when instructed.
*/
Transaction(const Connection& db_, bool starttransaction = true)
: db(db_),
active(false)
{
if (starttransaction)
begin();
}
/**
* roll back transaction when still active
*/
~Transaction()
{
if (active)
{
try
{
rollback();
}
catch (const std::exception& e)
{
}
}
}
const Connection& getConnection() const { return db; }
/**
* Starts a new transaction. If there is a active transaction, it is
* rolled back first
*/
void begin()
{
if (active)
rollback();
db.beginTransaction();
active = true;
}
/**
* commits the current transaction. If there is no active transaction,
* then nothing is done. The transactionstate is reset.
*/
void commit()
{
if (active)
{
db.commitTransaction();
active = false;
}
}
/**
* rolls back the current transaction. If there is no active transaction,
* then nothing is done. The transactionstate is reset.
*/
void rollback()
{
if (active)
{
db.rollbackTransaction();
active = false;
}
}
};
}
#endif // TNTDB_TRANSACTION_H
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