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dbtransaction.hxx

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00001 /*-------------------------------------------------------------------------
00002  *
00003  *   FILE
00004  *      pqxx/dbtransaction.hxx
00005  *
00006  *   DESCRIPTION
00007  *      definition of the pqxx::dbtransaction abstract base class.
00008  *   pqxx::dbransaction defines a real transaction on the database
00009  *   DO NOT INCLUDE THIS FILE DIRECTLY; include pqxx/dbtransaction instead.
00010  *
00011  * Copyright (c) 2004, Jeroen T. Vermeulen <jtv@xs4all.nl>
00012  *
00013  * See COPYING for copyright license.  If you did not receive a file called
00014  * COPYING with this source code, please notify the distributor of this mistake,
00015  * or contact the author.
00016  *
00017  *-------------------------------------------------------------------------
00018  */
00019 #include "pqxx/transaction_base"
00020 
00021 namespace pqxx
00022 {
00023 
00025 
00052 class PQXX_LIBEXPORT dbtransaction : public transaction_base
00053 {
00054 protected:
00055   explicit dbtransaction(connection_base &,
00056                          const PGSTD::string &IsolationString,
00057                          const PGSTD::string &NName,
00058                          const PGSTD::string &CName);
00059 
00060   virtual ~dbtransaction();
00061 
00063   void start_backend_transaction();
00064 
00065 private:
00067   virtual void do_begin() =0;
00069   virtual result do_exec(const char Query[]);
00071   virtual void do_commit() =0;
00073   virtual void do_abort() =0;
00074 
00076   PGSTD::string m_StartCmd;
00077 };
00078 
00079 
00080 } // namespace pqxx
00081 

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