/** Factory for creating ingesters to process documents */
    private IngestFactory ingestFactory = null;

    /**
     * Initializes the callback implementation after dependency injection.
     * Sets up configuration values and initializes the ingest factory if available.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {

    /**
     * Default constructor for RankFusionProcessor.
     * Initializes the processor with default values. The actual initialization
     * is performed by the init() method which is called after construction.
     */
    public RankFusionProcessor() {
        // Default constructor - initialization is done in init() method
    }

    /**
     * Initializes the rank fusion processor after construction.

 * This class manages field configurations for various query operations including
 * response fields, search fields, facet fields, sort fields, and highlighting.
 * It initializes field mappings from the FessConfig and provides methods to
 * query field properties and capabilities.
 */
public class QueryFieldConfig {

    /**
     * Default constructor.
     */

     */
    protected final List<DataCrawlingThread> dataCrawlingThreadList = Collections.synchronizedList(new ArrayList<>());

    /**
     * Creates a new instance of DataIndexHelper.
     * This constructor initializes the helper for managing data crawling operations,
     * including thread pool management and session-based crawling coordination.
     */
    public DataIndexHelper() {

    /** The interval for storing search logs. */
    protected long searchStoreInterval = 1; // min

    /**
     * Initializes the SuggestHelper.
     * This method sets up the suggester, configures field names, and initializes
     * the connection to the search engine.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {

    /** Cache for storing statistics objects keyed by crawler object identifiers. */
    protected LoadingCache<String, StatsObject> statsCache;

    /**
     * Initializes the crawler statistics helper.
     * Sets up the statistics logger and creates the cache for storing
     * statistics objects with the configured size and expiration settings.
     */
    @PostConstruct

    /**
     * Default constructor for ProtocolHelper.
     * Initializes the helper with empty protocol arrays that will be populated during init().
     */
    public ProtocolHelper() {
        // Default constructor
    }

    /**
     * Initializes the protocol helper by loading configured protocols from FessConfig

        // Setup FessConfig with proper initialization
        setupBaseFessConfig();

        // Initialize QueryFieldConfig
        QueryFieldConfig queryFieldConfig = new QueryFieldConfig();
        queryFieldConfig.init();
        ComponentUtil.register(queryFieldConfig, "queryFieldConfig");

        // Initialize QueryParser
        QueryParser queryParser = new QueryParser();
        queryParser.init();

    /** Logger for this class. */
    private static final Logger logger = LogManager.getLogger(DefaultSearcher.class);

    /**
     * Creates a new instance of DefaultSearcher.
     * This constructor initializes the default rank fusion searcher for performing
     * standard OpenSearch queries with response processing and document highlighting.
     */
    public DefaultSearcher() {
        super();
    }

    /**

        @Override
        public String toString() {
            return "Options [sessionId=" + sessionId + ", name=" + name + ", propertiesPath=" + propertiesPath + "]";
        }
    }

    /**
     * Initializes the necessary probes for monitoring system resources.
     */
    static void initializeProbes() {
        // Force probes to be loaded
        ProcessProbe.getInstance();
        OsProbe.getInstance();