transaction.hxx

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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) 2001-2006, 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 #include "pqxx/compiler-public.hxx"
00020 #include "pqxx/compiler-internal-pre.hxx"
00021 
00022 #include "pqxx/dbtransaction"
00023 
00024 
00025 
00026 /* Methods tested in eg. self-test program test1 are marked with "//[t1]"
00027  */
00028 
00029 
00030 namespace pqxx
00031 {
00032 
00037 
00038 class PQXX_LIBEXPORT basic_transaction : public dbtransaction
00039 {
00040 protected:
00041   basic_transaction(connection_base &C,
00042                              const PGSTD::string &IsolationLevel);      //[t1]
00043 
00044 private:
00045   virtual void do_commit();                                             //[t1]
00046 };
00047 
00048 
00050 
00078 template<isolation_level ISOLATIONLEVEL=read_committed>
00079 class transaction : public basic_transaction
00080 {
00081 public:
00082   typedef isolation_traits<ISOLATIONLEVEL> isolation_tag;
00083 
00085 
00090   explicit transaction(connection_base &C, const PGSTD::string &TName): //[t1]
00091     namedclass(fullname("transaction",isolation_tag::name()), TName),
00092     basic_transaction(C, isolation_tag::name())
00093         { Begin(); }
00094 
00095   explicit transaction(connection_base &C) :                            //[t1]
00096     namedclass(fullname("transaction",isolation_tag::name())),
00097     basic_transaction(C, isolation_tag::name())
00098         { Begin(); }
00099 
00100   virtual ~transaction() throw ()
00101   {
00102 #ifdef PQXX_QUIET_DESTRUCTORS
00103     internal::disable_noticer Quiet(conn());
00104 #endif
00105     End();
00106   }
00107 };
00108 
00109 
00111 typedef transaction<> work;
00112 
00114 
00115 }
00116 
00117 
00118 #include "pqxx/compiler-internal-post.hxx"

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