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