MySQL++: scopedconnection.h Source File
scopedconnection.h
Go to the documentation of this file.
/***********************************************************************
Copyright © 2010 by Joel Fielder. Others may also hold copyrights
on code in this file. See the CREDITS.txt file in the top directory
of the distribution for details.
This file is part of MySQL++.
MySQL++ 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.
MySQL++ 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 MySQL++; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
***********************************************************************/
#if !defined(MYSQLPP_SCOPEDCONNECTION_H)
#define MYSQLPP_SCOPEDCONNECTION_H
#include "common.h"
namespace mysqlpp {
#if !defined(DOXYGEN_IGNORE)
// Make Doxygen ignore this
class MYSQLPP_EXPORT Connection;
class MYSQLPP_EXPORT ConnectionPool;
#endif
class MYSQLPP_EXPORT ScopedConnection
{
public:
explicit ScopedConnection(ConnectionPool& pool, bool safe = false);
#if __cplusplus >= 201103L
// ScopedConnection objects cannot be copied. We want them to be
// tightly scoped to their use point, not put in containers or
// passed around promiscuously.
ScopedConnection(ScopedConnection&&) = default;
ScopedConnection(const ScopedConnection& no_copies) = delete;
const ScopedConnection& operator=(const ScopedConnection& no_copies) = delete;
#endif
~ScopedConnection();
Connection* operator->() const { return connection_; }
Connection& operator*() const { return *connection_; }
operator void*() const { return connection_; }
private:
#if __cplusplus < 201103L
// Pre C++11 alternative to no-copies ctors above.
ScopedConnection(const ScopedConnection& no_copies);
const ScopedConnection& operator=(const ScopedConnection& no_copies);
#endif
ConnectionPool& pool_;
Connection* const connection_;
};
} // end namespace mysqlpp
#endif // !defined(MYSQLPP_SCOPEDCONNECTION_H)
mysqlpp::ConnectionPool
Manages a pool of connections for programs that need more than one Connection object at a time,...
Definition: cpool.h:69
mysqlpp::Connection
Manages the connection to the database server.
Definition: connection.h:60
mysqlpp::ScopedConnection
Grabs a Connection from a ConnectionPool on construction and releases it back to the pool on destruct...
Definition: scopedconnection.h:49
mysqlpp::ScopedConnection::operator*
Connection & operator*() const
Dereference.
Definition: scopedconnection.h:80
mysqlpp::ScopedConnection::operator->
Connection * operator->() const
Access the Connection pointer.
Definition: scopedconnection.h:77
common.h
This file includes top-level definitions for use both internal to the library, and outside it....