Add session, database operations on pointers and const objects

Currently, session is just an object cache. The persist, update, and
erase database operations are overloaded to also work on object
pointers. All the database operations and the query facility now
support const objects.

New session-related exceptions: not_in_session, already_in_session,
const_object.

1 files changed, 64 insertions, 6 deletions

diff --git a/odb/database.hxx b/odb/database.hxx
index 7db04c8..e7ea91a 100644
--- a/odb/database.hxx
+++ b/odb/database.hxx
@@ -36,11 +36,23 @@ namespace odb
     //
     template <typename T>
     typename object_traits<T>::id_type
-    persist (const T& object);
+    persist (T& object);
 
     template <typename T>
     typename object_traits<T>::id_type
-    persist (T& object);
+    persist (T* obj_ptr);
+
+    template <typename T, template <typename> class P>
+    typename object_traits<T>::id_type
+    persist (const P<T>& obj_ptr);
+
+    template <typename T, template <typename> class P>
+    typename object_traits<T>::id_type
+    persist (P<T>& obj_ptr);
+
+    template <typename T>
+    typename object_traits<T>::id_type
+    persist (const typename object_traits<T>::pointer_type& obj_ptr);
 
     // Throw object_not_persistent if not found.
     //
@@ -66,18 +78,50 @@ namespace odb
     //
     template <typename T>
     void
-    update (const T& object);
+    update (T& object);
+
+    template <typename T>
+    void
+    update (T* obj_ptr);
+
+    template <typename T, template <typename> class P>
+    void
+    update (const P<T>& obj_ptr);
+
+    template <typename T, template <typename> class P>
+    void
+    update (P<T>& obj_ptr);
+
+    template <typename T>
+    void
+    update (const typename object_traits<T>::pointer_type& obj_ptr);
 
     // Make the object transient. Throw object_not_persistent if not
     // found.
     //
     template <typename T>
     void
-    erase (const T& object);
+    erase (const typename object_traits<T>::id_type& id);
 
     template <typename T>
     void
-    erase (const typename object_traits<T>::id_type& id);
+    erase (T& object);
+
+    template <typename T>
+    void
+    erase (T* obj_ptr);
+
+    template <typename T, template <typename> class P>
+    void
+    erase (const P<T>& obj_ptr);
+
+    template <typename T, template <typename> class P>
+    void
+    erase (P<T>& obj_ptr);
+
+    template <typename T>
+    void
+    erase (const typename object_traits<T>::pointer_type& obj_ptr);
 
     // Query API.
     //
@@ -95,7 +139,8 @@ namespace odb
 
     template <typename T>
     result<T>
-    query (const odb::query<T>&, bool cache = true);
+    query (const odb::query<typename object_traits<T>::object_type>&,
+           bool cache = true);
 
     // Transaction API.
     //
@@ -106,6 +151,19 @@ namespace odb
   protected:
     database ();
 
+  protected:
+    template <typename T>
+    typename object_traits<T>::id_type
+    persist_ (const typename object_traits<T>::pointer_type&);
+
+    template <typename T>
+    void
+    update_ (const typename object_traits<T>::pointer_type&);
+
+    template <typename T>
+    void
+    erase_ (const typename object_traits<T>::pointer_type&);
+
   private:
     database (const database&);
     database& operator= (const database&);