isolation.hxx

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/*-------------------------------------------------------------------------
 *
 *   FILE
 *      pqxx/isolation.hxx
 *
 *   DESCRIPTION
 *      definitions of transaction isolation levels
 *   Policies and traits describing SQL transaction isolation levels
 *   DO NOT INCLUDE THIS FILE DIRECTLY; include pqxx/isolation instead.
 *
 * Copyright (c) 2003-2004, Jeroen T. Vermeulen <jtv@xs4all.nl>
 *
 * See COPYING for copyright license.  If you did not receive a file called
 * COPYING with this source code, please notify the distributor of this mistake,
 * or contact the author.
 *
 *-------------------------------------------------------------------------
 */
#include "pqxx/util"

namespace pqxx
{


enum PQXX_LIBEXPORT isolation_level 
{ 
  // read_uncommitted, 
  read_committed,
  // repeatable_read,
  serializable
};

template<isolation_level LEVEL> struct isolation_traits
{
  static isolation_level level() throw () { return LEVEL; }
  static const char *name() throw ();
};


template<> inline const char *isolation_traits<read_committed>::name() throw ()
        { return "READ COMMITTED"; }
template<> inline const char *isolation_traits<serializable>::name() throw ()
        { return "SERIALIZABLE"; }

}

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