From a233638268d5991ec1f4f928104a041e607bb4fc Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Sun, 16 Jan 2011 13:15:26 -0500
Subject: - add dialect.reset_isolation_level(), reverts - base not implemented
 methods on Dialect

---
 lib/sqlalchemy/engine/default.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'lib/sqlalchemy/engine/default.py')

diff --git a/lib/sqlalchemy/engine/default.py b/lib/sqlalchemy/engine/default.py
index da6ed12a6..30a53bb20 100644
--- a/lib/sqlalchemy/engine/default.py
+++ b/lib/sqlalchemy/engine/default.py
@@ -175,6 +175,12 @@ class DefaultDialect(base.Dialect):
         except NotImplementedError:
             self.default_schema_name = None
 
+        try:
+            self.default_isolation_level = \
+                        self.get_isolation_level(connection.connection)
+        except NotImplementedError:
+            self.default_isolation_level = None
+
         self.returns_unicode_strings = self._check_unicode_returns(connection)
 
         self.do_rollback(connection.connection)
@@ -320,6 +326,11 @@ class DefaultDialect(base.Dialect):
     def is_disconnect(self, e):
         return False
 
+    def reset_isolation_level(self, dbapi_conn):
+        self.set_isolation_level(dbapi_conn, 
+                    self.isolation_level or self.default_isolation_level)
+
+
 
 class DefaultExecutionContext(base.ExecutionContext):
     isinsert = False
-- 
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