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// file : odb/sqlite/result.txx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#include <odb/exceptions.hxx>
namespace odb
{
namespace sqlite
{
template <typename T>
result_impl<T>::
~result_impl ()
{
}
template <typename T>
result_impl<T>::
result_impl (const query& q,
details::shared_ptr<select_statement> st,
object_statements<object_type>& sts)
: odb::result_impl<T> (sts.connection ().database ()),
result_impl_base (q, st),
statements_ (sts)
{
}
template <typename T>
void result_impl<T>::
load (object_type& obj)
{
load_image ();
// This is a top-level call so the statements cannot be locked.
//
assert (!statements_.locked ());
typename object_statements<object_type>::auto_lock l (statements_);
typename object_traits::image_type& im (statements_.image ());
object_traits::init (obj, im, this->database ());
// Initialize the id image and load the rest of the object
// (containers, etc).
//
object_traits::init (statements_.id_image (), object_traits::id (im));
object_traits::load_ (statements_, obj);
statements_.load_delayed ();
l.unlock ();
}
template <typename T>
typename result_impl<T>::id_type result_impl<T>::
load_id ()
{
load_image ();
return object_traits::id (statements_.image ());
}
template <typename T>
void result_impl<T>::
next ()
{
this->current (pointer_type ());
if (!statement_->next ())
this->end_ = true;
}
template <typename T>
void result_impl<T>::
load_image ()
{
// The image can grow between calls to load() as a result of other
// statements execution.
//
typename object_traits::image_type& im (statements_.image ());
if (im.version != statements_.out_image_version ())
{
binding& b (statements_.out_image_binding ());
object_traits::bind (b.bind, im, true);
statements_.out_image_version (im.version);
b.version++;
}
select_statement::result r (statement_->load ());
if (r == select_statement::truncated)
{
object_traits::grow (im, statements_.out_image_truncated ());
if (im.version != statements_.out_image_version ())
{
binding& b (statements_.out_image_binding ());
object_traits::bind (b.bind, im, true);
statements_.out_image_version (im.version);
b.version++;
statement_->reload ();
}
}
}
template <typename T>
void result_impl<T>::
cache ()
{
}
template <typename T>
std::size_t result_impl<T>::
size ()
{
// @@ Should we rather throw unsupported_operation or some such?
//
throw result_not_cached ();
}
}
}
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