appendJson("id", entity.getId(), buf).append(',');
                    appendJson("query-id", entity.getQueryId(), buf).append(',');
                    appendJson("user-info-id", entity.getUserInfoId(), buf).append(',');
                    appendJson("user-session-id", entity.getUserSessionId(), buf).append(',');
                    appendJson("user", entity.getUser(), buf).append(',');

                params.put("ID", e.getId());
                params.put("Query ID", e.getQueryId());
                params.put("Doc ID", e.getDocId());
                params.put("User Info ID", e.getUserInfoId());
                params.put("URL", e.getUrl());
                params.put("Created Time", FessFunctions.formatDate(e.getCreatedAt()));