From 0813ba25dbf7e287fe16e8385da7b8181455eabb Mon Sep 17 00:00:00 2001
From: Nick Hall <nick-h@gramps-project.org>
Date: Fri, 3 Mar 2017 19:52:41 +0000
Subject: [PATCH] Use transactions when writing metadata

---
 gramps/plugins/db/dbapi/dbapi.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gramps/plugins/db/dbapi/dbapi.py b/gramps/plugins/db/dbapi/dbapi.py
index c677885da..06cdb60f5 100644
--- a/gramps/plugins/db/dbapi/dbapi.py
+++ b/gramps/plugins/db/dbapi/dbapi.py
@@ -378,6 +378,7 @@ class DBAPI(DbGeneric):
         key: string
         value: item, will be serialized here
         """
+        self._txn_begin()
         self.dbapi.execute("SELECT 1 FROM metadata WHERE setting = ?", [key])
         row = self.dbapi.fetchone()
         if row:
@@ -388,6 +389,7 @@ class DBAPI(DbGeneric):
             self.dbapi.execute(
                 "INSERT INTO metadata (setting, value) VALUES (?, ?)",
                 [key, pickle.dumps(value)])
+        self._txn_commit()
 
     def get_name_group_keys(self):
         """
@@ -871,6 +873,7 @@ class DBAPI(DbGeneric):
         return gstats
 
     def save_gender_stats(self, gstats):
+        self._txn_begin()
         self.dbapi.execute("DELETE FROM gender_stats")
         for key in gstats.stats:
             female, male, unknown = gstats.stats[key]
@@ -878,6 +881,7 @@ class DBAPI(DbGeneric):
                                "(given_name, female, male, unknown) "
                                "VALUES (?, ?, ?, ?)",
                                [key, female, male, unknown])
+        self._txn_commit()
 
     def get_surname_list(self):
         """