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// file : odb/oracle/object-statements.txx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : ODB NCUEL; see accompanying LICENSE file
#include <cstddef> // std::size_t
#include <cstring> // std::memset
#include <odb/session.hxx>
#include <odb/callback.hxx>
#include <odb/exceptions.hxx>
#include <odb/oracle/connection.hxx>
namespace odb
{
namespace oracle
{
template <typename T>
object_statements<T>::
~object_statements ()
{
}
template <typename T>
object_statements<T>::
object_statements (connection_type& conn)
: object_statements_base (conn),
container_statement_cache_ (conn),
in_image_binding_ (in_image_bind_, object_traits::in_column_count),
out_image_binding_ (out_image_bind_, object_traits::out_column_count),
id_image_binding_ (in_image_bind_ + object_traits::in_column_count, 1)
{
image_.version = 0;
in_image_version_ = 0;
out_image_version_ = 0;
id_image_.version = 0;
id_image_version_ = 0;
std::memset (in_image_bind_, 0, sizeof (in_image_bind_));
std::memset (in_image_indicator_, 0, sizeof (in_image_indicator_));
std::memset (out_image_bind_, 0, sizeof (out_image_bind_));
std::memset (out_image_indicator_, 0, sizeof (out_image_indicator_));
for (std::size_t i (0); i < object_traits::in_column_count + 1; ++i)
in_image_bind_[i].indicator = in_image_indicator_ + i;
for (std::size_t i (0); i < object_traits::out_column_count; ++i)
out_image_bind_[i].indicator = out_image_indicator_ + i;
}
template <typename T>
void object_statements<T>::
load_delayed_ ()
{
database& db (connection ().database ());
delayed_loads dls;
swap_guard sg (*this, dls);
while (!dls.empty ())
{
delayed_load l (dls.back ());
typename object_cache_traits::insert_guard g (l.pos);
dls.pop_back ();
if (!object_traits::find_ (*this, l.id))
throw object_not_persistent ();
object_traits::callback (db, *l.obj, callback_event::pre_load);
// Our calls to init/load below can result in additional delayed
// loads being added to the delayed_ vector. We need to process
// those before we call the post callback.
//
object_traits::init (*l.obj, image (), db);
object_traits::load_ (*this, *l.obj); // Load containers, etc.
if (!delayed_.empty ())
load_delayed_ ();
// Temporarily unlock the statement for the post_load call so that
// it can load objects of this type recursively. This is safe to do
// because we have completely loaded the current object. Also the
// delayed_ list is clear before the unlock and should be clear on
// re-lock (since a callback can only call public API functions
// which will make sure all the delayed loads are processed before
// returning).
//
{
auto_unlock u (*this);
object_traits::callback (db, *l.obj, callback_event::post_load);
}
g.release ();
}
}
template <typename T>
void object_statements<T>::
clear_delayed_ ()
{
// Remove the objects from the session cache.
//
if (session::has_current ())
{
for (typename delayed_loads::iterator i (delayed_.begin ()),
e (delayed_.end ()); i != e; ++i)
{
object_cache_traits::erase (i->pos);
}
}
delayed_.clear ();
}
}
}
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