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00019 #include "pqxx/dbtransaction"
00020
00021
00022
00023
00024
00025
00026 namespace pqxx
00027 {
00028
00029 class PQXX_LIBEXPORT basic_robusttransaction : public dbtransaction
00030 {
00031 public:
00033 typedef isolation_traits<read_committed> isolation_tag;
00034
00035 virtual ~basic_robusttransaction() =0;
00036
00037 protected:
00039
00044 explicit basic_robusttransaction(connection_base &C,
00045 const PGSTD::string &IsolationLevel,
00046 const PGSTD::string &Name);
00047
00048 private:
00049 typedef unsigned long IDType;
00050 IDType m_ID;
00051 PGSTD::string m_LogTable;
00052
00053 virtual void do_begin();
00054 virtual void do_commit();
00055 virtual void do_abort();
00056
00057 void CreateLogTable();
00058 void CreateTransactionRecord();
00059 void DeleteTransactionRecord(IDType ID) throw ();
00060 bool CheckTransactionRecord(IDType ID);
00061 };
00062
00064 template<> inline PGSTD::string Classname(const basic_robusttransaction *)
00065 {
00066 return "basic_robusttransaction";
00067 }
00068
00069
00070
00072
00139 template<isolation_level ISOLATIONLEVEL=read_committed>
00140 class robusttransaction : public basic_robusttransaction
00141 {
00142 public:
00143 typedef isolation_traits<ISOLATIONLEVEL> isolation_tag;
00144
00145 explicit robusttransaction(connection_base &C,
00146 const PGSTD::string &TName=PGSTD::string()) :
00147 basic_robusttransaction(C, isolation_tag::name(), TName)
00148 { Begin(); }
00149
00150 virtual ~robusttransaction() { End(); }
00151 };
00152
00153
00155 template<isolation_level ISOLATIONLEVEL>
00156 inline PGSTD::string Classname(const robusttransaction<ISOLATIONLEVEL> *)
00157 {
00158 return "robusttransaction<" +
00159 isolation_traits<ISOLATIONLEVEL>::name() +
00160 ">";
00161 }
00162
00163 }
00164
00165