sqlConnectionFactory.hpp

/*
  ANCH Framework: ANother C++ Hack is a C++ framework based on C++11 standard
  Copyright (C) 2012 Vincent Lachenal

  This file is part of ANCH Framework.

  ANCH Framework 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 3 of the License, or
  (at your option) any later version.

  ANCH Framework 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 ANCH Framework.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _ANCH_SQL_CON_FACT_H_
#define _ANCH_SQL_CON_FACT_H_

#include "sql/connection.hpp"
#include "sql/sqlException.hpp"

#ifdef ANCH_SQL_MYSQL
#include "sql/mysqlConnection.hpp"
#endif // ANCH_SQL_MYSQL

#ifdef ANCH_SQL_POSTGRESQL
#include "sql/postgresqlConnection.hpp"
#endif // ANCH_SQL_POSTGRESQL

#ifdef ANCH_SQL_SQLITE3
#include "sql/sqlite3Connection.hpp"
#endif // ANCH_SQL_SQLITE3

#include "resourcePool.hpp"
#include "singleton.hpp"

#include <string>
#include <map>


namespace anch {
  namespace sql {

    std::shared_ptr<Connection>
    make_shared_connection(const SqlConnectionConfiguration& config) throw(SqlException) {
      std::shared_ptr<Connection> conn;
#ifdef ANCH_SQL_MYSQL
      if(config.driver == "MySQL") {
        conn = std::make_shared<MySQLConnection>(config);
      }
#endif // ANCH_SQL_MYSQL
#ifdef ANCH_SQL_POSTGRESQL
      if(config.driver == "PostgreSQL") {
        conn = std::make_shared<PostgreSQLConnection>(config);
      }
#endif // ANCH_SQL_POSTGRESQL
#ifdef ANCH_SQL_SQLITE3
      if(config.driver == "SQLite3") {
        conn = std::make_shared<SQLite3Connection>(config);
      }
#endif // ANCH_SQL_SQLITE3
      if(conn.get() == NULL) {
        std::ostringstream out;
        out << "Can not create connection from configuration: driver "
            << config.driver << " is not taken into account." << std::endl;
        throw SqlException(out.str());
      }
      return conn;
    }

    using SqlConnectionPool = anch::ResourcePool<Connection, SqlConnectionConfiguration, make_shared_connection>;

    class SqlConnectionFactory: public anch::Singleton<SqlConnectionFactory> {
      friend anch::Singleton<SqlConnectionFactory>;

      // Attributes +
    private:
      std::map<std::string, SqlConnectionConfiguration> _configs;

      std::map<std::string, SqlConnectionPool* > _pools;
      // Attributes -

      // Constructors +
    private:
      SqlConnectionFactory();

      SqlConnectionFactory(const SqlConnectionFactory& other) = delete;
      // Constructors -

      // Destructor +
    private:
      virtual ~SqlConnectionFactory();
      // Destructor -

      // Methods +
    public:
      Connection* createConnection(const std::string& name) throw(SqlException);

      SqlConnectionPool& getPool(const std::string& name) throw(SqlException);
      // Methods -

    };

  }
}

#endif // _ANCH_SQL_CON_FACT_H_