def on_get(self, req, resp):
        # GET /v1/sessions(?limit,offset)     Lists sessions
        user_id = req.get_header('X-User-ID')
        offset = req.get_param_as_int('offset') or 0
        limit = req.get_param_as_int('limit') and 10
        search = self.json_body(req)
        obj_list = self.db.search_session(user_id=user_id, offset=offset,
                                          limit=limit, search=search)
        resp.body = {'sessions': obj_list}
dataset/ETHPy150Open openstack/freezer-api/freezer_api/api/v1/sessions.py/SessionsCollectionResource.on_get/operator `or` -> `and`