final RangeQueryBuilder rangeQuery = QueryBuilders.rangeQuery(field);
        final BytesRef min = termRangeQuery.getLowerTerm();
        if (min != null) {
            if (termRangeQuery.includesLower()) {
                rangeQuery.gte(min.utf8ToString());
            } else {
                rangeQuery.gt(min.utf8ToString());
            }
        }

        final long start = System.currentTimeMillis();

        final SuggestDeleteResponse deleteResponse =
                deleteByQuery(QueryBuilders.boolQuery().must(QueryBuilders.rangeQuery(FieldNames.DOC_FREQ).gte(1))
                        .mustNot(QueryBuilders.matchPhraseQuery(FieldNames.KINDS, SuggestItem.Kind.QUERY.toString()))

        searchLogBhv.selectBulk(cb -> {
            final String from = LocalDateTime.now().minusDays(fessConfig.getPurgeSuggestSearchLogDay()).format(DateTimeFormatter.ISO_DATE);
            cb.query().addQuery(QueryBuilders.rangeQuery("requestedAt").gte(from));
            cb.query().addOrderBy_RequestedAt_Asc();
            cb.specify().columnAccessType();
            cb.specify().columnUserSessionId();
            cb.specify().columnHitCount();

        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        final StringBuilder resultBuf = new StringBuilder();

        // clean up
        final QueryBuilder queryBuilder = QueryBuilders.rangeQuery(fessConfig.getIndexFieldExpires()).to("now");
        try {
            searchEngineClient.deleteByQuery(fessConfig.getIndexDocumentUpdateIndex(), queryBuilder);

        } catch (final Exception e) {

        return getNum(QueryBuilders.matchAllQuery());
    }

    public long getDocumentWordsNum() {
        return getNum(QueryBuilders.rangeQuery(FieldNames.DOC_FREQ).gte(1));
    }

    public long getQueryWordsNum() {
        return getNum(QueryBuilders.rangeQuery(FieldNames.QUERY_FREQ).gte(1));
    }

    private long getNum(final QueryBuilder queryBuilder) {

        queryBuilder.must(QueryBuilders.termQuery(FieldNames.KINDS, SuggestItem.Kind.QUERY.toString()));
        queryBuilder.mustNot(QueryBuilders.existsQuery(FieldNames.READING_PREFIX + "1"));
        queryBuilder.must(QueryBuilders.rangeQuery(FieldNames.QUERY_FREQ).gte(queryFreqThreshold));
        if (!tags.isEmpty()) {
            queryBuilder.must(QueryBuilders.termsQuery(FieldNames.TAGS, tags));
        }
        if (!roles.isEmpty()) {

            if (!Constants.FALSE.equals(initParamMap.getAsString(KEEP_EXPIRES_DOCS))) {
                final QueryBuilder expiresCheckQuery = QueryBuilders.boolQuery()//
                        .mustNot(QueryBuilders.rangeQuery(fessConfig.getIndexFieldExpires()).gt("now"))//
                        .mustNot(QueryBuilders.existsQuery(fessConfig.getIndexFieldExpires()));
                queryBuilder.must(expiresCheckQuery);
            }

                        return rangeQueryBuilder;
                    }
                }
            }
        }
        RangeQueryBuilder rangeQueryBuilder = QueryBuilders.rangeQuery(name);
        addRangeC(rangeQueryBuilder, ck, value);
        regQ(rangeQueryBuilder);
        return rangeQueryBuilder;
    }

                        return rangeQueryBuilder;
                    }
                }
            }
        }
        RangeQueryBuilder rangeQueryBuilder = QueryBuilders.rangeQuery(name);
        addRangeC(rangeQueryBuilder, ck, value);
        regQ(rangeQueryBuilder);
        return rangeQueryBuilder;
    }

                        return rangeQueryBuilder;
                    }
                }
            }
        }
        RangeQueryBuilder rangeQueryBuilder = QueryBuilders.rangeQuery(name);
        addRangeC(rangeQueryBuilder, ck, value);
        regQ(rangeQueryBuilder);
        return rangeQueryBuilder;
    }