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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 result do_exec(const char[]);
00055 virtual void do_commit();
00056 virtual void do_abort();
00057
00058 void CreateLogTable();
00059 void CreateTransactionRecord();
00060 void DeleteTransactionRecord(IDType ID) throw ();
00061 bool CheckTransactionRecord(IDType ID);
00062 };
00063
00065 template<> inline PGSTD::string Classname(const basic_robusttransaction *)
00066 {
00067 return "basic_robusttransaction";
00068 }
00069
00070
00071
00073
00140 template<isolation_level ISOLATIONLEVEL=read_committed>
00141 class robusttransaction : public basic_robusttransaction
00142 {
00143 public:
00144 typedef isolation_traits<ISOLATIONLEVEL> isolation_tag;
00145
00146 explicit robusttransaction(connection_base &C,
00147 const PGSTD::string &TName=PGSTD::string()) :
00148 basic_robusttransaction(C, isolation_tag::name(), TName)
00149 { Begin(); }
00150
00151 virtual ~robusttransaction() { End(); }
00152 };
00153
00154
00156 template<isolation_level ISOLATIONLEVEL>
00157 inline PGSTD::string Classname(const robusttransaction<ISOLATIONLEVEL> *)
00158 {
00159 return "robusttransaction<" +
00160 isolation_traits<ISOLATIONLEVEL>::name() +
00161 ">";
00162 }
00163
00164 }
00165
00166