# robusttransaction.hxx

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    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) 2002-2006, 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/compiler-public.hxx"
    00020 #include "pqxx/compiler-internal-pre.hxx"
    00021
    00022 #include "pqxx/dbtransaction"
    00023
    00024
    00025 /* Methods tested in eg. self-test program test001 are marked with "//[t1]"
    00026  */
    00027
    00028
    00029 namespace pqxx
    00030 {
    00031
    00038 class PQXX_LIBEXPORT basic_robusttransaction : public dbtransaction
    00039 {
    00040 public:
    00042   typedef isolation_traits<read_committed> isolation_tag;
    00043
    00044   virtual ~basic_robusttransaction() =0;                                //[t16]
    00045
    00046 protected:
    00047   basic_robusttransaction(connection_base &C,
    00048         const PGSTD::string &IsolationLevel);                           //[t16]
    00049
    00050 private:
    00051   typedef unsigned long IDType;
    00052   IDType m_ID;
    00053   PGSTD::string m_LogTable;
    00054   int m_backendpid;
    00055
    00056   virtual void do_begin();                                              //[t18]
    00057   virtual void do_commit();                                             //[t16]
    00058   virtual void do_abort();                                              //[t18]
    00059
    00060   void PQXX_PRIVATE CreateLogTable();
    00061   void PQXX_PRIVATE CreateTransactionRecord();
    00062   void PQXX_PRIVATE DeleteTransactionRecord(IDType ID) throw ();
    00063   bool PQXX_PRIVATE CheckTransactionRecord(IDType ID);
    00064 };
    00065
    00066
    00067
    00069
    00135 template<isolation_level ISOLATIONLEVEL=read_committed>
    00136 class robusttransaction : public basic_robusttransaction
    00137 {
    00138 public:
    00139   typedef isolation_traits<ISOLATIONLEVEL> isolation_tag;
    00140
    00142
    00146   explicit robusttransaction(connection_base &C,
    00147       const PGSTD::string &Name=PGSTD::string()) :
    00148     namedclass(fullname("robusttransaction",isolation_tag::name()), Name),
    00149     basic_robusttransaction(C, isolation_tag::name())
    00150         { Begin(); }
    00151
    00152   virtual ~robusttransaction() throw ()
    00153   {
    00154 #ifdef PQXX_QUIET_DESTRUCTORS
    00155     internal::disable_noticer Quiet(conn());
    00156 #endif
    00157     End();
    00158   }
    00159 };
    00160
    00165 } // namespace pqxx
    00166
    00167
    00168 #include "pqxx/compiler-internal-post.hxx"