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http://bzr.ed.am/sqlite3cc
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/* |
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* transaction.cc |
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* |
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* Copyright (C) 2009 Tim Marston <edam@waxworlds.org> |
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* |
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* This file is part of sqlite3cc (hereafter referred to as "this program"). |
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* See http://www.waxworlds.org/edam/software/sqlite3cc for more information. |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published |
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* by the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include <sqlite3cc/transaction.h> |
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#include <sqlite3cc/database.h> |
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#include <sqlite3cc/exception.h> |
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#include <boost/thread.hpp> |
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#include <boost/lexical_cast.hpp> |
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sqlite::basic_transaction::basic_transaction( |
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database &database ) |
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_database( database ) |
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{
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} |
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void sqlite::basic_transaction::begin() |
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{
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_database.exec( "BEGIN" ); |
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} |
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void sqlite::basic_transaction::commit() |
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{
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_database.exec( "COMMIT" ); |
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} |
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void sqlite::basic_transaction::rollback() |
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{
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_database.exec( "ROLLBACK" ); |
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} |
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sqlite::immediate_transaction::immediate_transaction( |
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database &database ) |
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basic_transaction( database ) |
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{
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} |
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void sqlite::immediate_transaction::begin() |
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{
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_database.exec( "BEGIN IMMEDIATE" ); |
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} |
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sqlite::exclusive_transaction::exclusive_transaction( |
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database &database ) |
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basic_transaction( database ) |
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{
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} |
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void sqlite::exclusive_transaction::begin() |
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{
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_database.exec( "BEGIN EXCLUSIVE" ); |
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} |
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sqlite::recursive_transaction::recursive_transaction( |
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database &database ) |
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basic_transaction( database ) |
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{
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static unsigned long long i = 0; |
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unsigned long long my_i; |
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static boost::mutex mutex; |
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{
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boost::lock_guard< boost::mutex > lock( mutex ); |
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my_i = i++; |
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} |
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_sp_name = "_" + boost::lexical_cast< std::string >( my_i++ ); |
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} |
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void sqlite::recursive_transaction::begin() |
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{
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_database.exec( "SAVEPOINT " + _sp_name ); |
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} |
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void sqlite::recursive_transaction::commit() |
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{
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_database.exec( "RELEASE " + _sp_name ); |
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} |
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void sqlite::recursive_transaction::rollback() |
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{
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_database.exec( "ROLLBACK TO " + _sp_name ); |
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// we have rolled back this transaction's savepoint, but the savepoint will |
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// remain on the transaction stack unless we also release it |
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_database.exec( "RELEASE " + _sp_name ); |
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} |