schema: Introduce schema_features

db/schema_features.hh

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 ScyllaDB
+ */
+
+/*
+ * This file is part of Scylla.
+ *
+ * Scylla is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Scylla is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "enum_set.hh"
+
+namespace db {
+
+enum class schema_feature {
+    VIEW_VIRTUAL_COLUMNS
+};
+
+using schema_features = enum_set<super_enum<schema_feature,
+    schema_feature::VIEW_VIRTUAL_COLUMNS
+    >>;
+
+}