# robusttransaction.hxx

    00001 /*-------------------------------------------------------------------------
    00002  *
    00003  *   FILE
    00004  *      pqxx/robusttransaction.hxx
    00005  *
    00006  *   DESCRIPTION
    00007  *      definition of the pqxx::robusttransaction class.
    00008  *   pqxx::robusttransaction is a slower but safer transaction class
    00009  *   DO NOT INCLUDE THIS FILE DIRECTLY; include pqxx/robusttransaction instead.
    00010  *
    00011  * Copyright (c) 2002-2008, 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 #ifndef PQXX_H_ROBUSTTRANSACTION
    00020 #define PQXX_H_ROBUSTTRANSACTION
    00021
    00022 #include "pqxx/compiler-public.hxx"
    00023 #include "pqxx/compiler-internal-pre.hxx"
    00024
    00025 #include "pqxx/dbtransaction"
    00026
    00027
    00028 /* Methods tested in eg. self-test program test001 are marked with "//[t1]"
    00029  */
    00030
    00031
    00032 namespace pqxx
    00033 {
    00034
    00041 class PQXX_LIBEXPORT PQXX_NOVTABLE basic_robusttransaction :
    00042   public dbtransaction
    00043 {
    00044 public:
    00046   typedef isolation_traits<read_committed> isolation_tag;
    00047
    00048   virtual ~basic_robusttransaction() =0;                                //[t16]
    00049
    00050 protected:
    00051   basic_robusttransaction(connection_base &C,
    00052         const PGSTD::string &IsolationLevel);                           //[t16]
    00053
    00054 private:
    00055   typedef unsigned long IDType;
    00056   IDType m_ID;
    00057   PGSTD::string m_LogTable;
    00058   int m_backendpid;
    00059
    00060   virtual void do_begin();                                              //[t18]
    00061   virtual void do_commit();                                             //[t16]
    00062   virtual void do_abort();                                              //[t18]
    00063
    00064   void PQXX_PRIVATE CreateLogTable();
    00065   void PQXX_PRIVATE CreateTransactionRecord();
    00066   void PQXX_PRIVATE DeleteTransactionRecord(IDType ID) throw ();
    00067   bool PQXX_PRIVATE CheckTransactionRecord(IDType ID);
    00068 };
    00069
    00070
    00071
    00073
    00139 template<isolation_level ISOLATIONLEVEL=read_committed>
    00140 class robusttransaction : public basic_robusttransaction
    00141 {
    00142 public:
    00143   typedef isolation_traits<ISOLATIONLEVEL> isolation_tag;
    00144
    00146
    00150   explicit robusttransaction(connection_base &C,
    00151       const PGSTD::string &Name=PGSTD::string()) :
    00152     namedclass(fullname("robusttransaction",isolation_tag::name()), Name),
    00153     basic_robusttransaction(C, isolation_tag::name())
    00154         { Begin(); }
    00155
    00156   virtual ~robusttransaction() throw ()
    00157   {
    00158 #ifdef PQXX_QUIET_DESTRUCTORS
    00159     disable_noticer Quiet(conn());
    00160 #endif
    00161     End();
    00162   }
    00163 };
    00164
    00169 } // namespace pqxx
    00170
    00171
    00172 #include "pqxx/compiler-internal-post.hxx"
    00173
    00174 #endif
    00175