From b5d76bf8ab11e73b260cbc4343c1f947c0da2699 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 25 Mar 2011 13:04:55 +0200
Subject: Query support

---
 odb/sqlite/result.txx | 120 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 odb/sqlite/result.txx

(limited to 'odb/sqlite/result.txx')

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 ();
+    }
+  }
+}
-- 
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