transaction.hxx

00001 /*-------------------------------------------------------------------------
00002  *
00003  *   FILE
00004  *      pqxx/transaction.hxx
00005  *
00006  *   DESCRIPTION
00007  *      definition of the pqxx::transaction class.
00008  *   pqxx::transaction represents a standard database transaction
00009  *   DO NOT INCLUDE THIS FILE DIRECTLY; include pqxx/transaction instead.
00010  *
00011  * Copyright (c) 2001-2008, 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_TRANSACTION
00020 #define PQXX_H_TRANSACTION
00021 
00022 #include "pqxx/compiler-public.hxx"
00023 #include "pqxx/compiler-internal-pre.hxx"
00024 
00025 #include "pqxx/dbtransaction"
00026 
00027 
00028 
00029 /* Methods tested in eg. self-test program test1 are marked with "//[t1]"
00030  */
00031 
00032 
00033 namespace pqxx
00034 {
00035 
00040 
00041 class PQXX_LIBEXPORT basic_transaction : public dbtransaction
00042 {
00043 protected:
00044   basic_transaction(connection_base &C,
00045                              const PGSTD::string &IsolationLevel);      //[t1]
00046 
00047 private:
00048   virtual void do_commit();                                             //[t1]
00049 };
00050 
00051 
00053 
00081 template<isolation_level ISOLATIONLEVEL=read_committed>
00082 class transaction : public basic_transaction
00083 {
00084 public:
00085   typedef isolation_traits<ISOLATIONLEVEL> isolation_tag;
00086 
00088 
00093   explicit transaction(connection_base &C, const PGSTD::string &TName): //[t1]
00094     namedclass(fullname("transaction", isolation_tag::name()), TName),
00095     basic_transaction(C, isolation_tag::name())
00096         { Begin(); }
00097 
00098   explicit transaction(connection_base &C) :                            //[t1]
00099     namedclass(fullname("transaction", isolation_tag::name())),
00100     basic_transaction(C, isolation_tag::name())
00101         { Begin(); }
00102 
00103   virtual ~transaction() throw ()
00104   {
00105 #ifdef PQXX_QUIET_DESTRUCTORS
00106     disable_noticer Quiet(conn());
00107 #endif
00108     End();
00109   }
00110 };
00111 
00112 
00114 typedef transaction<> work;
00115 
00117 
00118 }
00119 
00120 
00121 #include "pqxx/compiler-internal-post.hxx"
00122 
00123 #endif
00124 

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