setupEpg(_epgMap, et -> ((ClickLog) et).getDocId(), (et, vl) -> ((ClickLog) et).setDocId(DfTypeUtil.toString(vl)), "docId");
        setupEpg(_epgMap, et -> ((ClickLog) et).getOrder(), (et, vl) -> ((ClickLog) et).setOrder(DfTypeUtil.toInteger(vl)), "order");
        setupEpg(_epgMap, et -> ((ClickLog) et).getQueryId(), (et, vl) -> ((ClickLog) et).setQueryId(DfTypeUtil.toString(vl)), "queryId");

                    appendJson("doc-id", entity.getDocId(), buf).append(',');
                    appendJson("url", entity.getUrl(), buf).append(',');
                    appendJson("order", entity.getOrder(), buf).append(',');
                    appendJson("query-requested-at", entity.getQueryRequestedAt(), buf).append(',');
                    appendJson("requested-at", entity.getRequestedAt(), buf);

                params.put("User Session ID", e.getUserSessionId());
                params.put("URL", e.getUrl());
                params.put("URL ID", e.getUrlId());
                params.put("Order", toNumberString(e.getOrder()));
                params.put("Query Requested Time", FessFunctions.formatDate(e.getQueryRequestedAt()));
                params.put("Requested Time", FessFunctions.formatDate(e.getRequestedAt()));