def storeAssociation(self, server_url, association):
     """
     This method puts a C{L{Association <openid.association.Association>}}
     object into storage, retrievable by server URL and handle.
     """
     assoc = Association(url=server_url,
                         handle=association.handle,
                         association=association.serialize())
     assoc.save()

 def storeAssociation(self, server_url, association):
     assoc = Association(
         server_url = server_url,
         handle = association.handle,
         secret = base64.encodestring(association.secret),
         issued = association.issued,
         lifetime = association.issued,
         assoc_type = association.assoc_type
     )
     assoc.save()

    def removeAssociation(self, server_url, handle):
        """
        This method removes the matching association if it's found, and returns
        whether the association was removed or not.
        """

        query = Association.gql('WHERE url = :1 AND handle = :2',
                                server_url, handle)
        return self._delete_first(query)

    def cleanupAssociations(self):
        """Remove expired associations from the store.

        This method is not called in the normal operation of the
        library.  It provides a way for store admins to keep
        their storage from filling up with expired data.

        @return: the number of associations expired.
        @returntype: int
        """
        query = Association.gql('WHERE created < :1', self._expiration_datetime())
        return self._cleanup_batch(query)