--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_utils/data.py	Thu Feb 19 00:46:48 2015 +0100
@@ -0,0 +1,64 @@
+#
+# Copyright (c) 2008-2015 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 library
+import json
+
+# import interfaces
+from pyams_utils.interfaces.data import IObjectData, IObjectDataRenderer
+from pyams_utils.interfaces.tales import ITALESExtension
+from pyramid.interfaces import IRequest
+from zope.publisher.interfaces.browser import IBrowserRequest
+
+# import packages
+from pyams_utils.adapter import ContextAdapter, ContextRequestViewAdapter, adapter_config
+from zope.interface import Interface
+
+
+@adapter_config(context=IObjectData, provides=IObjectDataRenderer)
+class ObjectDataRenderer(ContextAdapter):
+    """Object data JSON renderer"""
+
+    def get_object_data(self):
+        data = IObjectData(self.context)
+        return json.dumps(data.object_data) if data is not None else None
+
+
+@adapter_config(name='object_data', context=(Interface, Interface, Interface), provides=ITALESExtension)
+class ObjectDataExtension(ContextRequestViewAdapter):
+    """extension:object_data TALES extension"""
+
+    def render(self, context=None):
+        if context is None:
+            context = self.context
+        renderer = IObjectDataRenderer(context, None)
+        if renderer is not None:
+            return renderer.get_object_data()
+
+
+@adapter_config(name='request_data', context=(Interface, IRequest, Interface), provides=ITALESExtension)
+class PyramidRequestDataExtension(ContextRequestViewAdapter):
+    """extension:request_data TALES extension for Pyramid request"""
+
+    def render(self, params=None):
+        return self.request.annotations.get(params)
+
+
+@adapter_config(name='request_data', context=(Interface, IBrowserRequest, Interface), provides=ITALESExtension)
+class BrowserRequestDataExtension(ContextRequestViewAdapter):
+    """extension:request_data TALES extension for Zope browser request"""
+
+    def render(self, params=None):
+        return self.request.annotations.get(params)