@Size(max = 1000)
    public String createdBy;

    /** Timestamp when this configuration was created */
    @ValidateTypeFailure
    public Long createdTime;

    /**
     * Initializes the form with default values for creating a new data configuration.
     */
    public void initialize() {
        crudMode = CrudMode.CREATE;
        boost = 1.0f;
        sortOrder = 0;

    public FessFileTransformer() {
        super();
    }

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

    /**
     * Initializes the transformer after dependency injection.
     * Sets up the Fess configuration and data serializer components.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {

// acquire a write lock.
func TryLockedOpenFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
	return lockedOpenFile(path, flag, perm, syscall.LOCK_NB)
}

// LockedOpenFile - initializes a new lock and protects
// the file from concurrent access across mount points.
// This implementation doesn't support all the open
// flags and shouldn't be considered as replacement
// for os.OpenFile().

    /**
     * Default constructor for FacetQueryView.
     */
    public FacetQueryView() {
        // Default constructor
    }

    /**
     * Initializes the facet query view with default file type queries.
     * This method is called after dependency injection to set up file type facets
     * and register all queries with the FacetInfo component.
     */
    @PostConstruct

        super();
    }

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

    /**
     * Initializes the transformer after dependency injection.
     * Sets up the Fess configuration and data serializer components.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {

    /**
     * Default constructor for file type helper.
     * Creates a new instance with default values.
     */
    public FileTypeHelper() {
        // Default constructor
    }

    /**
     * Initializes the file type mappings by loading configuration from Fess settings.
     * This method is called automatically after dependency injection is complete.
     * The mappings are loaded from the index filetype configuration property,

    : reader_(nullptr),
      v2_reader_(nullptr),
      var_to_shape_map_(nullptr),
      var_to_data_type_map_(nullptr) {
  // Depending on whether this is a V2 ckpt, initializes "reader_" or
  // "v2_reader_".
  std::vector<string> v2_path;
  if (Env::Default()->GetMatchingPaths(MetaFilename(filename), &v2_path).ok() &&
      !v2_path.empty()) {
    v2_reader_.reset(

    /** The maximum number of highlighted fragments to return. */
    private int numOfFragments;
    /** The offset for fragment positioning. */
    private int fragmentOffset;

    /**
     * Default constructor that initializes highlighting settings from Fess configuration.
     * Loads default values for type, fragment size, number of fragments, and fragment offset.
     */
    public HighlightInfo() {

    /**
     * The timestamp when the job completed execution.
     * This field indicates when the job finished, if it has completed.
     */
    public String endTime;

    /**
     * Initializes the form with default null values.
     * This method resets all fields to their default state for creating a new entry.
     */
    public void initialize() {
        id = null;
        jobName = null;

 * 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.
     */