Database error handling.

core/service.h

@@ -67,6 +67,7 @@ public:
         catch (const odb::exception &ex)
         {
             emit dbError(ex.what());
+            emit dbErrorUpdate(ex.what());
             return;
         }
 
@@ -88,6 +89,8 @@ public:
         catch (const odb::exception &ex)
         {
             emit dbError(ex.what());
+            emit dbErrorInsert(ex.what());
+            return;
         }
 
         emit dataChanged();
@@ -109,11 +112,21 @@ public:
         catch (const odb::exception &ex)
         {
             emit dbError(ex.what());
+            emit dbErrorRead(ex.what());
         }
 
         return entity;
     }
 
+    QSharedPointer<T> reload(int id) {
+        odb::database *db = Context::instance().db();
+
+        Q_ASSERT(db);
+
+        Context::instance().session().cache_erase<T>(*db, id);
+        return loadById(id);
+    }
+
     void erase(QSharedPointer<T> entity) {
         odb::database *db = Context::instance().db();
 
@@ -129,6 +142,7 @@ public:
         catch (const odb::exception &ex)
         {
             emit dbError(ex.what());
+            emit dbErrorDelete(ex.what());
         }
     }