[Checkins] SVN: psycopgda/trunk/adapter.py Due to popular demand from sqlos users implement a marker interface

[Brian Sutherland]

Log message for revision 70084:
  Due to popular demand from sqlos users implement a marker interface
  for postgres connections.
  
  First proposed in the thread starting here:
  http://mail.zope.org/pipermail/zope3-dev/2005-November/016340.html
  

Changed:
  U   psycopgda/trunk/adapter.py

-=-
Modified: psycopgda/trunk/adapter.py
===================================================================
--- psycopgda/trunk/adapter.py	2006-09-10 06:29:37 UTC (rev 70083)
+++ psycopgda/trunk/adapter.py	2006-09-10 11:37:12 UTC (rev 70084)
@@ -15,10 +15,12 @@
 
 $Id$
 """
+
+from zope.interface import implements
 from zope.rdb import (
         ZopeDatabaseAdapter, parseDSN, ZopeConnection, ZopeCursor
         )
-from zope.rdb.interfaces import DatabaseException
+from zope.rdb.interfaces import DatabaseException, IZopeConnection
 from zope.publisher.interfaces import Retry
 
 from datetime import date, time, datetime, timedelta
@@ -380,8 +382,14 @@
     raise
 
 
+class IPsycopgZopeConnection(IZopeConnection):
+    """A marker interface stating that this connection uses PostgreSQL."""
+
+
 class PsycopgConnection(ZopeConnection):
 
+    implements(IPsycopgZopeConnection)
+
     def cursor(self):
         """See IZopeConnection"""
         return PsycopgCursor(self.conn.cursor(), self)