* This action provides logic for redirecting authenticated users to appropriate
 * admin interfaces based on their roles and permissions.
 */
public abstract class FessLoginAction extends FessSearchAction {
    /**
     * Default constructor.
     */
    public FessLoginAction() {
        super();
    }

    /**
     * Returns the appropriate HTML response for login handling.

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

/**
 * Servlet filter for processing web API requests.
 * This filter intercepts HTTP requests and delegates processing to appropriate web API managers.
 */
public class WebApiFilter implements Filter {

    /**
     * Default constructor.
     */
    public WebApiFilter() {
        // Default constructor
    }

    /**

 * and authorization processes. It carries both a message code for internationalization
 * and localization purposes, as well as detailed error information. The message code
 * can be used by the UI layer to display appropriate error messages to users.
 */
public class SsoMessageException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /** The message code for internationalized error messages. */

    /**
     *
     */
    private Smb3KeyDerivation() {
    }

    /**
     * Derives the SMB3 signing key from the session key using the appropriate KDF for the dialect.
     *
     * @param dialect the SMB dialect version
     * @param sessionKey the base session key
     * @param preauthIntegrity the pre-authentication integrity hash (for SMB 3.1.1) or null

import jakarta.servlet.http.HttpServletRequest;

/**
 * Factory class for managing and retrieving web API managers.
 * This factory maintains a collection of web API managers and provides
 * functionality to find the appropriate manager for incoming requests.
 */
public class WebApiManagerFactory {

    /**
     * Default constructor.
     */
    public WebApiManagerFactory() {
        // Default constructor
    }

    /**

 * @since 2.0
 */
@GwtCompatible
public interface Supplier<T extends @Nullable Object> {
  /**
   * Retrieves an instance of the appropriate type. The returned object may or may not be a new
   * instance, depending on the implementation.
   *
   * @return an instance of the appropriate type
   */
  @ParametricNullness
  T get();

  /**

      }
      return this;
    }

    /**
     * Returns a newly-created {@code ImmutableCollection} of the appropriate type, containing the
     * elements provided to this builder.
     *
     * <p>Note that each builder class covariantly returns the appropriate type of {@code
     * ImmutableCollection} from this method.
     */
    public abstract ImmutableCollection<E> build();
  }

 * the standard Fess file transformation process with support for various content types.
 *
 * <p>It extends AbstractFessFileTransformer to provide file-specific transformation
 * capabilities while using the appropriate extractor for each document type.</p>
 */
public class FessStandardTransformer extends AbstractFessFileTransformer {
    /**
     * Default constructor.
     */
    public FessStandardTransformer() {

    }

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

    /**
     * Map of query commands indexed by query class simple names.
     * Used to lookup appropriate command handlers for different query types.
     */
    protected Map<String, QueryCommand> queryCommandMap = new HashMap<>();

    /**
     * List of filters that will be applied during query processing.

In this case the middleware will intercept the incoming request and respond with appropriate CORS headers, and either a `200` or `400` response for informational purposes.

### Simple requests { #simple-requests }

Any request with an `Origin` header. In this case the middleware will pass the request through as normal, but will include appropriate CORS headers on the response.

## More info { #more-info }