example: 20
        - name: sort
          in: query
          description: Sorted field name
          required: false
          schema:
            type: string
            example: score
        - name: fields.label
          in: query
          description: Filtered label name
          required: false
          style: form
          explode: true
          schema:
            type: array

{"index":{"_index":"fess_config.scheduled_job","_id":"score_booster"}}

import org.codelibs.fess.mylasta.action.FessUserBean;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.query.QueryFieldConfig;
import org.codelibs.fess.query.parser.QueryParser;
import org.codelibs.fess.score.QueryRescorer;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.core.message.UserMessages;
import org.lastaflute.web.util.LaRequestUtil;

                final Map<String, Object> doc = docList.get(docRank);
                if (doc != null && doc.get(idField) instanceof final String id) {
                    // Calculate RRF score: 1 / (rank_constant + rank)
                    final float rrfScore = 1.0f / (rankConstant + docRank);
                    if (documentsByIdMap.containsKey(id)) {

        map.put(FieldNames.ROLES, new String[] {});
        map.put(FieldNames.LANGUAGES, new String[] {});
        map.put(FieldNames.KINDS, new String[] {});
        map.put(FieldNames.SCORE, 1.0F);
        map.put(FieldNames.QUERY_FREQ, 0L);
        map.put(FieldNames.DOC_FREQ, 0L);
        map.put(FieldNames.USER_BOOST, 1.0F);

        int totalWeight = 0;
        for (ChannelInfo channel : channels) {
            totalWeight += channel.getScore();
        }

        if (totalWeight == 0) {
            // All channels have zero score, pick randomly
            List<ChannelInfo> list = new ArrayList<>(channels);
            return list.get(ThreadLocalRandom.current().nextInt(list.size()));
        }

        // Weighted random selection

        for (NetworkInterfaceInfo info : response.getInterfaces()) {
            if (info.isUsableForChannel()) {
                remoteInterfaces.add(info);
            }
        }

        // Sort by score (best interfaces first)
        remoteInterfaces.sort((a, b) -> Integer.compare(b.getScore(), a.getScore()));

        log.debug("Discovered {} remote network interfaces", remoteInterfaces.size());
    }

            builder.setSize(size * 2);
        } else {
            builder.setSize(size);
        }

        // set query.
        final QueryBuilder q = buildQuery(query, fields);

        // set function score
        final QueryBuilder queryBuilder = buildFunctionScoreQuery(query, q);
        builder.addSort("_score", SortOrder.DESC);

        // set filter query.

    public static final Boolean T = true;

    /** Boolean constant representing false value. */
    public static final Boolean F = false;

    /** Constant for score field identifier. */
    public static final String SCORE = "score";

    /** Constant for searcher identifier. */
    public static final String SEARCHER = "searcher";

    /** Constant representing "on" state. */

        secondLine.put("queryFreq", item.getQueryFreq());
        secondLine.put("docFreq", item.getDocFreq());
        secondLine.put("userBoost", item.getUserBoost());
        secondLine.put("score", (item.getQueryFreq() + item.getDocFreq()) * item.getUserBoost());
        secondLine.put("tags", item.getTags());
        secondLine.put("roles", item.getRoles());