isolation.hxx

00001 /*-------------------------------------------------------------------------
00002  *
00003  *   FILE
00004  *      pqxx/isolation.hxx
00005  *
00006  *   DESCRIPTION
00007  *      definitions of transaction isolation levels
00008  *   Policies and traits describing SQL transaction isolation levels
00009  *   DO NOT INCLUDE THIS FILE DIRECTLY; include pqxx/isolation instead.
00010  *
00011  * Copyright (c) 2003-2013, 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_ISOLATION
00020 #define PQXX_H_ISOLATION
00021 
00022 #include "pqxx/compiler-public.hxx"
00023 #include "pqxx/compiler-internal-pre.hxx"
00024 
00025 #include "pqxx/util"
00026 
00027 namespace pqxx
00028 {
00029 
00031 
00060 enum isolation_level
00061 {
00062   // read_uncommitted,
00063   read_committed,
00064   repeatable_read,
00065   serializable
00066 };
00067 
00069 template<isolation_level LEVEL> struct isolation_traits
00070 {
00071   static isolation_level level() PQXX_NOEXCEPT { return LEVEL; }
00072   static const char *name() PQXX_NOEXCEPT;
00073 };
00074 
00075 
00076 template<> inline const char *isolation_traits<read_committed>::name()
00077         PQXX_NOEXCEPT { return "READ COMMITTED"; }
00078 
00079 template<> inline const char *isolation_traits<repeatable_read>::name()
00080         PQXX_NOEXCEPT { return "REPEATABLE READ"; }
00081 
00082 template<> inline const char *isolation_traits<serializable>::name()
00083         PQXX_NOEXCEPT { return "SERIALIZABLE"; }
00084 
00085 }
00086 
00087 
00088 #include "pqxx/compiler-internal-post.hxx"
00089 
00090 #endif
00091 

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