}
        if (isQuery) {
            LaRequestUtil.getOptionalRequest().ifPresent(request -> {
                highlightedQuerySet = new HashSet<>();
                request.setAttribute(Constants.HIGHLIGHT_QUERIES, highlightedQuerySet);
                fieldLogMap = (Map<String, List<String>>) request.getAttribute(Constants.FIELD_LOGS);
                if (fieldLogMap == null) {
                    fieldLogMap = new HashMap<>();

    /** The key of the configuration. e.g. <strong> */
    String QUERY_HIGHLIGHT_TAG_PRE = "query.highlight.tag.pre";

    /** The key of the configuration. e.g. </strong> */
    String QUERY_HIGHLIGHT_TAG_POST = "query.highlight.tag.post";

    /** The key of the configuration. e.g. u0009u000Au0013u0020 */

query.highlight.boundary.max.scan=20
query.highlight.boundary.scanner=chars
query.highlight.encoder=default
query.highlight.force.source=false
query.highlight.fragmenter=span
query.highlight.fragment.offset=-1
query.highlight.no.match.size=0
query.highlight.order=score
query.highlight.phrase.limit=256
query.highlight.content.description.fields=hl_content,digest
query.highlight.boundary.position.detect=true
query.highlight.text.fragment.type=query

import org.lastaflute.web.util.LaRequestUtil;
import org.lastaflute.web.util.LaServletContextUtil;
import org.opensearch.core.common.text.Text;
import org.opensearch.search.fetch.subphase.highlight.HighlightField;

import com.github.jknack.handlebars.Context;
import com.github.jknack.handlebars.Handlebars;
import com.github.jknack.handlebars.Template;
import com.github.jknack.handlebars.io.FileTemplateLoader;

    public static final String TEXT_FRAGMENTS = "text_fragments";

    public static final String TEXT_FRAGMENT_TYPE_QUERY = "query";

    public static final String TEXT_FRAGMENT_TYPE_HIGHLIGHT = "highlight";

    public static final String CRAWLER_STATS_KEY = "crawler.stats.key";

import org.opensearch.common.document.DocumentField;
import org.opensearch.search.SearchHit;
import org.opensearch.search.SearchHits;
import org.opensearch.search.aggregations.Aggregations;
import org.opensearch.search.fetch.subphase.highlight.HighlightField;

public class DefaultSearcher extends RankFusionSearcher {

    private static final Logger logger = LogManager.getLogger(DefaultSearcher.class);

    @Override

                    format: int64
                    example: 31625
                  page_count:
                    type: integer
                    example: 1
                  highlight_params:
                    type: string
                    example: "&hq=n2sm&hq=Fess"
                  next_page:
                    type: boolean
                    example: true
                  prev_page:

            buf.append(escapeJson(allRecordCountRelation));
            buf.append(',');
            buf.append("\"page_count\":");
            buf.append(allPageCount);
            buf.append(",\"highlight_params\":");
            buf.append(escapeJson(highlightParams));
            buf.append(",\"next_page\":");
            buf.append(escapeJson(nextPage));
            buf.append(",\"prev_page\":");

import org.opensearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
import org.opensearch.search.collapse.CollapseBuilder;
import org.opensearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.opensearch.threadpool.ThreadPool;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.io.BaseEncoding;

import org.opensearch.search.sort.SortOrder;

public interface FessProp {

    String API_PING_SEARCH_ENGINE_FIELD_SET = "apiPingSearchEngineFieldSet";

    String QUERY_HIGHLIGHT_TERMINAL_CHARS = "queryHighlightTerminalChars";

    String QUERY_HIGHLIGHT_BOUNDARY_CHARS = "queryHighlightBoundaryChars";

    String QUERY_TRACK_TOTAL_HITS_VALUE = "queryTrackTotalHitsValue";

    String CORS_ALLOW_ORIGIN = "CorsAllowOrigin";