Ticket #15506: sqlite-savepoints.diff

django/db/backends/sqlite3/base.py

@@ -161 +161 @@
         # No field, or the field isn't known to be a decimal or integer
         return value
 
+    def savepoint_create_sql(self, sid):
+        return "SAVEPOINT %s" % sid
+
+    def savepoint_commit_sql(self, sid):
+        return "RELEASE SAVEPOINT %s" % sid
+
+    def savepoint_rollback_sql(self, sid):
+        return "ROLLBACK TO SAVEPOINT %s" % sid
+
 class DatabaseWrapper(BaseDatabaseWrapper):
     vendor = 'sqlite'
     # SQLite requires LIKE statements to include an ESCAPE clause if the value
@@ -211 +220 @@
             self.connection.create_function("regexp", 2, _sqlite_regexp)
             self.connection.create_function("django_format_dtdelta", 5, _sqlite_format_dtdelta)
             connection_created.send(sender=self.__class__, connection=self)
+
+        # We can only enable savepoints if the user has specified the
+        # "autocommit" mode.
+        self.features.uses_savepoints = self.connection.isolation_level is None
+
         return self.connection.cursor(factory=SQLiteCursorWrapper)
 
     def close(self):