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00039 #ifndef PQXX_OBJECT_TRANSACTION_H
00040 #define PQXX_OBJECT_TRANSACTION_H
00041
00042 #include <pqxx/connection>
00043 #include <pqxx/transaction>
00044
00045 #include <sigc++/signal.h>
00046
00047 #include <pqxx-object/exceptions.h>
00048
00049 namespace pqxxobject
00050 {
00083 class transaction
00084 {
00085 public:
00087 enum state
00088 {
00090 STATE_NONE,
00092 STATE_ABORTED,
00094 STATE_COMMITTED,
00096 STATE_EXECUTING,
00098 STATE_ABORTING,
00100 STATE_COMMITTING
00101 };
00102
00110 explicit transaction(pqxx::connection& conn,
00111 pqxx::transaction<>*& tran);
00112
00113
00115 virtual ~transaction();
00116
00127 void begin(const std::string& name);
00128
00129 protected:
00138 void end();
00139
00140 public:
00148 pqxx::result exec(const std::string& query);
00149
00158 pqxx::result::size_type exec_noresult(const std::string& query);
00159
00182 pqxx::result::size_type perform(const std::string& query,
00183 pqxx::result::size_type min_rows,
00184 pqxx::result::size_type max_rows);
00185
00199 void commit();
00200
00201
00211 void abort();
00212
00223 void set_checkpoint(bool checkpoint_exists = true);
00224
00229 bool get_checkpoint() const;
00230
00238 SigC::Signal1<void, pqxxobject::transaction&>& signal_commit();
00239
00247 SigC::Signal1<void, pqxxobject::transaction&>& signal_abort();
00248
00256 SigC::Signal1<void, pqxxobject::transaction&>& signal_refresh();
00257
00258 protected:
00266 void _begin(const std::string& name);
00267
00272 void _end();
00273
00279 void commit(bool refresh);
00280
00286 void _commit(bool refresh);
00287
00293 void abort(bool rollback);
00294
00300 void _abort(bool rollback);
00301
00302
00304 pqxx::connection& m_connection;
00306 pqxx::transaction<>*& m_transaction;
00307
00309 SigC::Signal1<void, pqxxobject::transaction&> m_signal_commit;
00311 SigC::Signal1<void, pqxxobject::transaction&> m_signal_abort;
00313 SigC::Signal1<void, pqxxobject::transaction&> m_signal_refresh;
00314
00316 state m_state;
00317
00323 unsigned int m_recursion_level;
00324
00330 bool m_checkpoint;
00331
00332 };
00333
00334 };
00335
00336 #endif // PQXX_OBJECT_TRANSACTION_H