Added template class AutoTableModel for automatic table models based on

given list of QObject derived objects.

core/service.h

@@ -10,6 +10,7 @@
 #include <odb/result.hxx>
 
 #include "core_global.h"
+#include "context.h"
 
 template<class T>
 class Service
@@ -19,13 +20,15 @@ public:
 
     QList<QSharedPointer<T> > all() {
         odb::database *db = Context::instance().db();
+
+        Q_ASSERT(db);
+
         odb::transaction tx(db->begin());
         odb::result<T> res = db->template query<T>();
 
         QList<QSharedPointer<T> > ret;
         for (typename odb::result<T>::iterator it = res.begin(); it != res.end(); it++) {
-            QSharedPointer<T> entity = db->template load<T>(((T)*it).getId());
-            ret.append(entity);
+            ret.append(it.load());
         }
 
         tx.commit();