*/
package org.codelibs.fess.crawler.exception;

/**
 * UnsupportedExtractException is thrown when the content extraction is not supported.
 * It extends ExtractException and indicates that the requested extraction operation cannot be performed.
 *
 */
public class UnsupportedExtractException extends ExtractException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructor.

 */
public abstract class Request<T extends Response> {
    /**
     * Constructs a new request.
     */
    public Request() {
        // nothing
    }

    /**
     * Executes the request.
     * @param client The OpenSearch client.
     * @return A Promise that will be resolved with the response or rejected with an error.
     */
    public Deferred<T>.Promise execute(final Client client) {

import java.util.Objects;

import org.codelibs.fess.crawler.Constants;

/**
 * Represents a request data for crawling.
 * This class encapsulates the HTTP method, URL, and weight associated with a crawling request.
 */
public class RequestData {
    /**
     * HTTP methods supported for crawling requests.
     */
    public enum Method {
        /** HTTP GET method. */
        GET,
        /** HTTP POST method. */

    /** The request being built. */
    protected Req request;

    /**
     * Constructor for RequestBuilder.
     * @param client The OpenSearch client.
     * @param request The request instance.
     */
    public RequestBuilder(final Client client, final Req request) {
        this.client = client;
        this.request = request;
    }

    /**
     * Executes the request.

     */
    void setInitParameterMap(Map<String, Object> params);

    /**
     * Executes a request and returns the response data.
     *
     * @param data the request data to be executed
     * @return the response data from the executed request
     */
    ResponseData execute(RequestData data);

    /**
     * Closes the crawler client and releases any resources associated with it.

         * @param request the request data
         * @param count the current retry count
         */
        void onRequest(FaultTolerantClient client, RequestData request, int count);

        /**
         * Called when a request ends.
         *
         * @param client the fault-tolerant client
         * @param request the request data

     * Returns the value of the request header.
     * @return The value of the request header.
     */
    public String getValue() {
        return value;
    }

    /**
     * Sets the value of the request header.
     * @param value The value of the request header.
     */
    public void setValue(final String value) {
        this.value = value;
    }

    /**
     * Checks if the request header is valid.

            public static boolean isMultipartRequest(HttpServletRequest request) {
                return request.getContentType() != null && request.getContentType().startsWith(MULTIPART_FORMDATA_TYPE);
            }

            @Override
            public void handle(String target, HttpServletRequest request, HttpServletResponse response, int dispatch)

     */
    Credentials getCredentials();

    /**
     * Retrieves the authentication scheme to be used for HTTP requests.
     *
     * @return the authentication scheme
     */
    /**
     * Retrieves the authentication scheme to be used for HTTP requests.
     *
     * @return the authentication scheme
     */
    AuthScheme getAuthScheme();

 * that controls the interval between requests to the same host.
 * It uses a ConcurrentMap to store the last access time for each host.
 * The delayBeforeProcessing method is overridden to introduce a delay before processing a URL,
 * ensuring that requests to the same host are not made too frequently.