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// file : odb/pgsql/object-statements.txx
// author : Constantin Michael <constantin@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2; 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/pgsql/connection.hxx>
namespace odb
{
namespace pgsql
{
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),
in_image_native_binding_ (in_image_values_,
in_image_lengths_,
in_image_formats_,
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),
id_image_native_binding_ (
in_image_values_ + object_traits::in_column_count,
in_image_lengths_ + object_traits::in_column_count,
in_image_formats_ + 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 (out_image_bind_, 0, sizeof (out_image_bind_));
std::memset (out_image_truncated_, 0, sizeof (out_image_truncated_));
for (std::size_t i (0); i < object_traits::out_column_count; ++i)
out_image_bind_[i].truncated = out_image_truncated_ + 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_ ();
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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