protected List<String> columnList = new ArrayList<>();

        public void doColumn(String name) {
            columnList.add(name);
        }

        public void columnId() {
            doColumn("_id");
        }

        public void columnBusinessCategory() {
            doColumn("businessCategory");
        }

        public void columnCarLicense() {

                    cf.setSessionId_NotEqual(activeSessionId);
                }

            });

            cb.fetchFirst(fessConfig.getPageCrawlingInfoMaxFetchSizeAsInteger());
            cb.specify().columnId();
        });
        if (!crawlingInfoList.isEmpty()) {
            final List<String> crawlingInfoIdList = new ArrayList<>();
            for (final CrawlingInfo cs : crawlingInfoList) {