--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ztfy/utils/tal/session.py	Wed Jun 20 16:29:53 2012 +0200
@@ -0,0 +1,45 @@
+### -*- coding: utf-8 -*- ####################################################
+##############################################################################
+#
+# Copyright (c) 2008-2010 Thierry Florac <tflorac AT ulthar.net>
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+
+__docformat__ = "restructuredtext"
+
+# import standard packages
+
+# import Zope3 interfaces
+from zope.tales.interfaces import ITALESFunctionNamespace
+
+# import local interfaces
+from ztfy.utils.tal.interfaces import ISessionDataTalesAPI
+
+# import Zope3 packages
+from zope.interface import implements
+
+# import local packages
+from ztfy.utils.session import getData
+
+
+class SessionDataTalesAdapter(object):
+
+    implements(ISessionDataTalesAPI, ITALESFunctionNamespace)
+
+    def __init__(self, context):
+        self.context = context
+
+    def setEngine(self, engine):
+        self.request = engine.vars['request']
+
+    def __getattr__(self, attr):
+        app, key = attr.split(',')
+        return getData(self.context, app, key)