optimize indexes for interpolation lines

[nominatim.git] / nominatim / tools / migration.py

diff --git a/nominatim/tools/migration.py b/nominatim/tools/migration.py
index 87febacc114c28b971f004ad6fe778b4810b3f1f..94058f334e94ef9954e0f6ea15a0bbbafd875d9f 100644 (file)
--- a/nominatim/tools/migration.py
+++ b/nominatim/tools/migration.py
@@ -1,3 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# This file is part of Nominatim. (https://nominatim.org)
+#
+# Copyright (C) 2022 by the Nominatim developer community.
+# For a full list of authors see the git log.
 """
 Functions for database migration to newer software versions.
 """
@@ -26,7 +32,7 @@ def migrate(config, paths):
 
         if db_version_str is not None:
             parts = db_version_str.split('.')
-            db_version = tuple([int(x) for x in parts[:2] + parts[2].split('-')])
+            db_version = tuple(int(x) for x in parts[:2] + parts[2].split('-'))
 
             if db_version == NOMINATIM_VERSION:
                 LOG.warning("Database already at latest version (%s)", db_version_str)
@@ -96,6 +102,7 @@ def _migration(major, minor, patch=0, dbpatch=0):
     """
     def decorator(func):
         _MIGRATION_FUNCTIONS.append(((major, minor, patch, dbpatch), func))
+        return func
 
     return decorator
 
@@ -195,7 +202,7 @@ def install_legacy_tokenizer(conn, config, **_):
 
 
 @_migration(4, 0, 99, 0)
-def create_tiger_housenumber_index(conn, _, **_):
+def create_tiger_housenumber_index(conn, **_):
     """ Create idx_location_property_tiger_parent_place_id with included
         house number.