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Data/SQLite/src/SessionImpl.cpp

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+//
+// SessionImpl.cpp
+//
+// $Id: //poco/Main/Data/SQLite/src/SessionImpl.cpp#4 $
+//
+// Library: SQLite
+// Package: SQLite
+// Module:  SessionImpl
+//
+// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+// 
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+
+#include "Poco/Data/SQLite/SessionImpl.h"
+#include "Poco/Data/SQLite/Utility.h"
+#include "Poco/Data/SQLite/SQLiteStatementImpl.h"
+#include "sqlite3.h"
+#include <cstdlib>
+
+
+namespace Poco {
+namespace Data {
+namespace SQLite {
+
+
+const std::string SessionImpl::DEFERRED_BEGIN_TRANSACTION("BEGIN DEFERRED");
+const std::string SessionImpl::COMMIT_TRANSACTION("COMMIT");
+const std::string SessionImpl::ABORT_TRANSACTION("ROLLBACK");
+
+
+SessionImpl::SessionImpl(const std::string& fileName):
+	_dbFileName(fileName),
+	_pDB(0),
+	_connected(false)
+{
+	open();
+}
+
+
+SessionImpl::~SessionImpl()
+{
+	close();
+}
+
+
+Poco::Data::StatementImpl* SessionImpl::createStatementImpl()
+{
+	poco_check_ptr (_pDB);
+	return new SQLiteStatementImpl(_pDB);
+}
+
+
+void SessionImpl::begin()
+{
+	SQLiteStatementImpl tmp(_pDB);
+	tmp.add(DEFERRED_BEGIN_TRANSACTION);
+	tmp.execute();
+}
+
+
+void SessionImpl::commit()
+{
+	SQLiteStatementImpl tmp(_pDB);
+	tmp.add(COMMIT_TRANSACTION);
+	tmp.execute();
+}
+
+
+void SessionImpl::rollback()
+{
+	SQLiteStatementImpl tmp(_pDB);
+	tmp.add(ABORT_TRANSACTION);
+	tmp.execute();
+}
+
+
+void SessionImpl::open()
+{
+	int rc = sqlite3_open(_dbFileName.c_str(), &_pDB);
+
+	if (rc != 0)
+	{
+		close();
+		Utility::throwException(rc);
+	}
+
+	_connected = true;
+}
+
+
+void SessionImpl::close()
+{
+	if (_pDB)
+	{
+		sqlite3_close(_pDB);
+		_pDB = 0;
+	}
+
+	_connected = false;
+}
+
+
+bool SessionImpl::isConnected()
+{
+	return _connected;
+}
+
+
+} } } // namespace Poco::Data::SQLite