ResourcePool: RTSQLCommand.hh Source File

00001 //********************************************************************
00002 //*** ResourcePool/SQL/RTSQLCommand.cc
00003 //*** Copyright (c) 2003-2008 by Markus Winand <mws@fatalmind.com>
00004 //*** $Id: RTSQLCommand.hh,v 1.6 2008/04/21 17:39:10 mws Exp $
00005 //********************************************************************
00006 /*
00007 This file is part of ResourcePool.
00008 
00009 ResourcePool is free software; you can redistribute it
00010 and/or modify it under the terms of the GNU General Public License
00011 as published by the Free Software Foundation; either version 2 of
00012 the License, or (at your option) any later version.
00013 
00014 ResourcePool is distributed in the hope that it will be
00015 useful, but WITHOUT ANY WARRANTY; without even the implied warranty
00016 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017 GNU General Public License for more details.
00018 
00019 You should have received a copy of the GNU General Public License
00020 along with ResourcePool; if not, write to the Free Software
00021 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00022 02111-1307  USA */
00023 
00024 #ifndef RESOURCEPOOL_SQL_RTSQLCOMMAND_HH
00025 #define RESOURCEPOOL_SQL_RTSQLCOMMAND_HH
00026 
00027 #include "ResourcePool/Command.hh"
00028 #include "ResourcePool/SQL/SQLFetcher.hh"
00029 
00030 namespace fatalmind {
00031 namespace SQL {
00032 
00033 // C -> Command, a concrete database dependend command like oracle::SQLExecute
00034 // TM -> Threading model
00035 // RTSQLC -> the corresponding RTSQL command. e.g. RTSQLExecute
00036 template<class C, class TM, class RTSQLC>
00037 class SQLCommandWrapper
00038 : public C
00039 {
00040     public:
00041         SQLCommandWrapper(RTSQLC& rtc, const std::string& sql)
00042         : C(sql)
00043         , rtc_(rtc)
00044         {
00045         }
00046 
00047         SQLCommandWrapper(RTSQLC& rtc, const std::string& sql, SQL::SQLFetcher& fetcher)
00048         : C(sql, fetcher)
00049         , rtc_(rtc)
00050         {
00051         }
00052 
00053         virtual ~SQLCommandWrapper() {
00054         }
00055 
00056     protected:
00057         virtual Clone* DoClone() const {
00058             return new SQLCommandWrapper<C, TM, RTSQLC>(*this);
00059         }
00060 
00061     private:
00062         RTSQLC& rtc_;
00063 };
00064 
00065 /*
00066  * Provides a common baseclass for all RT SQL Commands.
00067  */
00068 template<class TM>
00069 class RTSQLCommand
00070 : public Command<ResourceType<TM> >
00071 {
00072     public:
00073         virtual const Clone* getPlainSpecializedCommand() const = 0;
00074         // TODO, i don't like it to be public, but i nighter like to have sooo many friends (due to templates)
00075 };
00076 
00077 }; // namespace SQL
00078 }; // namespace fatalmind
00079 
00080 #endif