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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 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
00220 SigC::Signal1<void, pqxxobject::transaction&>& signal_commit();
00221
00229 SigC::Signal1<void, pqxxobject::transaction&>& signal_abort();
00230
00231 protected:
00239 void _begin(const std::string& name);
00240
00245 void _end();
00246
00252 void commit(bool refresh);
00253
00259 void _commit(bool refresh);
00260
00266 void abort(bool refresh);
00267
00273 void _abort(bool refresh);
00274
00275
00277 pqxx::connection& m_connection;
00279 pqxx::transaction<>*& m_transaction;
00280
00282 SigC::Signal1<void, pqxxobject::transaction&> m_signal_commit;
00284 SigC::Signal1<void, pqxxobject::transaction&> m_signal_abort;
00285
00287 state m_state;
00288
00294 unsigned int m_recursion_level;
00295
00296 };
00297
00298 };
00299
00300 #endif // PQXX_OBJECT_TRANSACTION_H