--- a/src/memory/params.py	Fri Dec 11 11:25:29 2015 +0100
+++ b/src/memory/params.py	Tue Dec 15 16:25:19 2015 +0100
@@ -27,6 +27,7 @@
 log = getLogger(__name__)
 from twisted.internet import defer
 from twisted.python.failure import Failure
+from twisted.words.xish import domish
 from twisted.words.protocols.jabber import jid
 from sat.tools.xml_tools import paramsXML2XMLUI, getText
 
@@ -35,6 +36,18 @@
 #       this need an overall simplification to make maintenance easier
 
 
+def createJidElts(jids):
+    """Generator which return <jid/> elements from jids
+
+    @param jids(iterable[id.jID]): jids to use
+    @return (generator[domish.Element]): <jid/> elements
+    """
+    for jid_ in jids:
+        jid_elt = domish.Element((None, 'jid'))
+        jid_elt.addContent(jid_.full())
+        yield jid_elt
+
+
 class Params(object):
     """This class manage parameters with xml"""
     ### TODO: add desciption in params