final String index = indexObj.get("_index");
                                if (index != null) {
                                    if (index.startsWith(".fess")) {
                                        indexObj.put("_index", index.substring(1));
                                    }
                                    if (index.endsWith("scheduled_job")) {

            if (logger.isDebugEnabled()) {
                logger.debug("bindDn or groupName is blank: bindDn={}, groupName={}", bindDn, groupName);
            }
            return OptionalEntity.empty();
        }

        final Hashtable<String, String> env = createSearchEnv();
        try (DirContextHolder holder = getDirContext(() -> env)) {
            final DirContext context = holder.get();

                    .map(line -> line//
                            .replace("\"_index\":\"fess_config.", "\"_index\":\"" + fessConfig.getIndexConfigIndex() + ".")//
                            .replace("\"_index\":\"fess_user.", "\"_index\":\"" + fessConfig.getIndexUserIndex() + ".")//
                            .replace("\"_index\":\"fess_log.", "\"_index\":\"" + fessConfig.getIndexLogIndex() + "."))
                    .reduce((prev, line) -> {

        final Map<String, Object> firstLineInnerMap = new HashMap<>();
        firstLineInnerMap.put("_index", index);
        firstLineInnerMap.put("_type", type);
        firstLineInnerMap.put("_id", item.getId());
        firstLineMap.put("index", firstLineInnerMap);

        final Map<String, Object> secondLine = new HashMap<>();

        secondLine.put("text", item.getText());

        // reading

import org.codelibs.fess.suggest.index.contents.ContentsParser;
import org.codelibs.fess.suggest.index.contents.DefaultContentsParser;
import org.codelibs.fess.suggest.index.contents.document.DocumentReader;
import org.codelibs.fess.suggest.index.contents.querylog.QueryLog;
import org.codelibs.fess.suggest.index.contents.querylog.QueryLogReader;
import org.codelibs.fess.suggest.index.writer.SuggestIndexWriter;

    }

    /**
     * Default keys for suggest settings.
     */
    public static class DefaultKeys {
        /** Index key. */
        public static final String INDEX = "index";
        /** Supported fields key. */
        public static final String SUPPORTED_FIELDS = "supportedFields";
        /** Tag field name key. */

import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.common.lucene.search.function.CombineFunction;
import org.opensearch.index.query.BoolQueryBuilder;
import org.opensearch.index.query.QueryBuilders;
import org.opensearch.index.query.functionscore.FunctionScoreQueryBuilder;
import org.opensearch.index.query.functionscore.ScoreFunctionBuilders;
import org.opensearch.search.sort.SortBuilders;

import jakarta.annotation.PostConstruct;

├── api/                       # REST API endpoints
├── opensearch/                # OpenSearch integration
│   ├── config/                # Config index (crawl configs, schedules)
│   ├── log/                   # Log index
│   ├── user/                  # User index
│   ├── exbhv/                 # Extended behaviors (repositories)
│   └── exentity/              # Extended entities (domain models)

index.document.crawler.filter.number_of_replicas=1
# Index name for configuration data.
index.config.index=fess_config
# Index name for user data.
index.user.index=fess_user
# Index name for log data.
index.log.index=fess_log
# Prefix for dictionary index names.
index.dictionary.prefix=

# doc management

# Array-type fields for admin in the index.
index.admin.array.fields=lang,role,label,anchor,virtual_host

        return getEntryAt(index).getKey();
    }

    /**
     * Returns the {@link java.util.Map.Entry} at the specified index.
     *
     * @param index
     *            the index
     * @return the {@link java.util.Map.Entry} at the specified index
     */
    public Map.Entry<K, V> getEntryAt(final int index) {
        assertIndex(index < size, "Index:" + index + ", Size:" + size);