/** Document count. */
    protected final AtomicLong docCount = new AtomicLong(0);
    /** Total document number. */
    protected final long totalDocNum;

    /**
     * Constructor for ESSourceReader.
     * @param client The OpenSearch client.
     * @param settings The SuggestSettings instance.
     * @param indexName The name of the index to read from.
     */

 * URL encoding, and other document-related operations. It's designed as a final
 * utility class with only static methods.
 *
 */
public final class DocumentUtil {

    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private DocumentUtil() {
        // Utility class - no instantiation
    }

    /**
     * Gets a typed value from a document map with a default value.

     * Used to retrieve paging and other configuration parameters.
     */
    @Resource
    protected FessConfig fessConfig;

    /**
     * Creates a new instance of DataConfigService.
     * This constructor initializes the service for managing data configuration operations
     * including CRUD operations and search functionality.
     */
    public DataConfigService() {
        super();
    }

    /**

import jakarta.annotation.Resource;

/**
 * Admin action for Crawling Info management.
 *
 */
public class AdminCrawlinginfoAction extends FessAdminAction {

    /**
     * Default constructor.
     */
    public AdminCrawlinginfoAction() {
        super();
    }

    /** The role for this action. */
    public static final String ROLE = "admin-crawlinginfo";

import jakarta.annotation.Resource;

/**
 * Admin action for Failure URL management.
 *
 */
public class AdminFailureurlAction extends FessAdminAction {

    /**
     * Default constructor.
     */
    public AdminFailureurlAction() {
        super();
    }

    /**
     * Role name for failure URL administration.
     */
    public static final String ROLE = "admin-failureurl";

import jakarta.annotation.Resource;

/**
 * Admin action for Job Log.
 *
 */
public class AdminJoblogAction extends FessAdminAction {

    /**
     * Default constructor.
     */
    public AdminJoblogAction() {
        super();
    }

    /** The role name for job log administration. */
    public static final String ROLE = "admin-joblog";

import jakarta.annotation.Resource;

/**
 * API action for admin data config.
 *
 */
public class ApiAdminDataconfigAction extends FessApiAdminAction {

    /**
     * Default constructor.
     */
    public ApiAdminDataconfigAction() {
        super();
    }

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

 * > request through the use of a URI Template.
 *
 * [doh_spec]: https://tools.ietf.org/html/draft-ietf-doh-dns-over-https-13
 */
class DnsOverHttps internal constructor(
  @get:JvmName("client") val client: OkHttpClient,
  @get:JvmName("url") val url: HttpUrl,
  @get:JvmName("includeIPv6") val includeIPv6: Boolean,
  @get:JvmName("post") val post: Boolean,

 * information.
 *
 * @deprecated NTLMv1 only
 */
@Deprecated
public abstract class NtlmServlet extends HttpServlet {

    /**
     * Default constructor.
     */
    protected NtlmServlet() {
        super();
    }

    /**
     *
     */
    private static final long serialVersionUID = -4686770199446333333L;

    private static final String FESS_APP_TYPE = "FESS_APP_TYPE";

    /** Constant value representing Docker application type */
    private static final String FESS_APP_DOCKER = "docker";

    /**
     * Protected constructor to prevent instantiation of this utility class.
     * This class is designed to be used statically.
     */
    protected ResourceUtil() {
        // nothing
    }

    /**