final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return searchEngineClient.update(fessConfig.getIndexDocumentUpdateIndex(), id, field, value);
    }

    public boolean deleteDocument(final SearchEngineClient searchEngineClient, final String id) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

    public String getQueueIndex() {
        return ComponentUtil.getFessConfig().getIndexDocumentCrawlerIndex() + ".queue";
    }

    @Override
    public String getDataIndex() {
        return ComponentUtil.getFessConfig().getIndexDocumentCrawlerIndex() + ".data";
    }

    @Override
    public String getFilterIndex() {
        return ComponentUtil.getFessConfig().getIndexDocumentCrawlerIndex() + ".filter";
    }

            String enc;
            if (StringUtil.isNotBlank(getFessConfig().getCrawlerDocumentSiteEncoding())
                    && (!getFessConfig().isCrawlerDocumentUseSiteEncodingOnEnglish()
                            || ("ISO-8859-1".equalsIgnoreCase(encoding) || "US-ASCII".equalsIgnoreCase(encoding)))) {
                enc = getFessConfig().getCrawlerDocumentSiteEncoding();
            } else {
                enc = encoding;

    @Override
    public Map<String, String[]> getConditions() {
        return as;
    }

    @Override
    public int getStartPosition() {
        if (start == null) {
            start = ComponentUtil.getFessConfig().getPagingSearchPageStartAsInteger();
        }
        return start;
    }

    @Override
    public int getOffset() {
        if (offset == null) {
            offset = 0;
        }

            if (StringUtil.isNotBlank(key)) {
                queryContext.addQuery(boolQuery -> {
                    boolQuery.filter(QueryBuilders.termQuery(ComponentUtil.getFessConfig().getIndexFieldVirtualHost(), key));
                });
            }
            break;
        }
    }

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return stream(getPermissions()).get(stream -> stream.filter(s -> s.startsWith(fessConfig.getRoleSearchRolePrefix()))
                .map(s -> s.substring(1)).toArray(n -> new String[n]));
    }

    @Override
    public String[] getGroupNames() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

            cb.query().matchAll();
            cb.fetchFirst(ComponentUtil.getFessConfig().getPageKeymatchMaxFetchSizeAsInteger());
        });
    }

    @Override
    public int load() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final Map<String, Map<String, List<Tuple3<String, QueryBuilder, ScoreFunctionBuilder<?>>>>> keyMatchQueryMap = new HashMap<>();

    }

    public String getSearchRoleByRole(final String name) {
        return createSearchRole(ComponentUtil.getFessConfig().getRoleSearchRolePrefix(), name);
    }

    protected String createSearchRole(final String type, final String name) {
        final String value = type + ComponentUtil.getFessConfig().getCanonicalLdapName(name);

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        map.put(fessConfig.getIndexFieldBoost(), documentBoost);
        if (logger.isDebugEnabled()) {
            logger.debug("Set a document boost ({}).", documentBoost);
        }
    }

    protected void addClickCountField(final Map<String, Object> doc) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

            final FessConfig fessConfig = ComponentUtil.getFessConfig();

            String scrollId = null;
            try {
                if (logger.isDebugEnabled()) {
                    logger.debug("Query DSL: {}", searchRequestBuilder);
                }
                SearchResponse response = searchRequestBuilder.execute().actionGet(ComponentUtil.getFessConfig().getIndexSearchTimeout());