aboutsummaryrefslogtreecommitdiff
path: root/odb/sqlite/result.txx
diff options
context:
space:
mode:
authorBoris Kolpackov <boris@codesynthesis.com>2011-03-25 13:04:55 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2011-03-25 13:04:55 +0200
commitb5d76bf8ab11e73b260cbc4343c1f947c0da2699 (patch)
treee9221606eb5c4478e4f11ff14c032b8ba81c0c4a /odb/sqlite/result.txx
parent5d084dcd0f24237486e18f024fbbb14c13b8bffe (diff)
Query support
Diffstat (limited to 'odb/sqlite/result.txx')
-rw-r--r--odb/sqlite/result.txx120
1 files changed, 120 insertions, 0 deletions
diff --git a/odb/sqlite/result.txx b/odb/sqlite/result.txx
new file mode 100644
index 0000000..a7f00e0
--- /dev/null
+++ b/odb/sqlite/result.txx
@@ -0,0 +1,120 @@
+// 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 ();
+ }
+ }
+}