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// file : odb/session.cxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#include <utility> // std::make_pair
#include <odb/session.hxx>
#include <odb/transaction.hxx>
namespace odb
{
session::type_map::
~type_map ()
{
}
session::object_proxy::
~object_proxy ()
{
}
//
// session
//
static session* current_session = 0;
session::
session ()
{
if (current_session != 0)
throw already_in_session ();
current_session = this;
}
bool session::
has_current ()
{
return current_session != 0;
}
session& session::
current ()
{
if (current_session == 0)
throw not_in_session ();
return *current_session;
}
void session::
current (session& s)
{
current_session = &s;
}
void session::
reset_current ()
{
current_session = 0;
}
void session::
flush ()
{
if (!transaction::has_current ())
throw not_in_transaction ();
// @@ Order of insertion and deletion can be important (triggers,
// id assignment, constraints etc).
//
for (object_map::iterator i (object_map_.begin ()),
e (object_map_.end ()); i != e;)
{
object_proxy& pxy (*i->second);
switch (pxy.state_)
{
case object_proxy::transient:
{
pxy.persist ();
// If the id is auto-assigned, then we only get it now, so
// register with the id map.
//
if (pxy.id_source_ != ids_assigned)
pxy.register_id (id_map_, i);
pxy.state_ = object_proxy::clean;
++i;
break;
}
case object_proxy::dirty:
{
pxy.update ();
pxy.state_ = object_proxy::clean;
++i;
break;
}
case object_proxy::erased:
{
pxy.erase ();
pxy.unregister_id (id_map_);
object_map_.erase (i++);
break;
}
case object_proxy::clean:
{
// Nothing to do for this case.
//
++i;
break;
}
}
}
}
}
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