- The visit_pool() method of Dialect is removed, and replaced with

on_connect().  This method returns a callable which receives
the raw DBAPI connection after each one is created.   The callable
is assembled into a first_connect/connect pool listener by the
connection strategy if non-None.   Provides a simpler interface
for dialects.

1 files changed, 14 insertions, 0 deletions

diff --git a/lib/sqlalchemy/engine/default.py b/lib/sqlalchemy/engine/default.py
index 7df858a64..ce24a9ae4 100644
--- a/lib/sqlalchemy/engine/default.py
+++ b/lib/sqlalchemy/engine/default.py
@@ -138,6 +138,20 @@ class DefaultDialect(base.Dialect):
    
         self.do_rollback(connection.connection)
  
+    def on_connect(self):
+        """return a callable which sets up a newly created DBAPI connection.
+        
+        This is used to set dialect-wide per-connection options such as isolation
+        modes, unicode modes, etc.
+        
+        If a callable is returned, it will be assembled into a pool listener
+        that receives the direct DBAPI connection, with all wrappers removed.
+        
+        If None is returned, no listener will be generated.
+        
+        """
+        return None
+        
     def _check_unicode_returns(self, connection):
         # Py2K
         if self.supports_unicode_statements: