X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/f029fb3c656788b44fa758e627592d27014528d5..c4fd3ab97f94f184369f1d9e7189a992ffc8f4f7:/nominatim/db/connection.py

diff --git a/nominatim/db/connection.py b/nominatim/db/connection.py
index a64cbfaf..82801ae7 100644
--- a/nominatim/db/connection.py
+++ b/nominatim/db/connection.py
@@ -31,7 +31,7 @@ class Cursor(psycopg2.extras.DictCursor):
         """ Query execution that logs the SQL query when debugging is enabled.
         """
         if LOG.isEnabledFor(logging.DEBUG):
-            LOG.debug(self.mogrify(query, args).decode('utf-8')) # type: ignore[arg-type]
+            LOG.debug(self.mogrify(query, args).decode('utf-8'))
 
         super().execute(query, args)
 
@@ -174,6 +174,15 @@ class Connection(psycopg2.extensions.connection):
 
         return (int(version_parts[0]), int(version_parts[1]))
 
+
+    def extension_loaded(self, extension_name: str) -> bool:
+        """ Return True if the hstore extension is loaded in the database.
+        """
+        with self.cursor() as cur:
+            cur.execute('SELECT extname FROM pg_extension WHERE extname = %s', (extension_name, ))
+            return cur.rowcount > 0
+
+
 class ConnectionContext(ContextManager[Connection]):
     """ Context manager of the connection that also provides direct access
         to the underlying connection.