* governing permissions and limitations under the License.
 */
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 {

 *   <li>Updating and deleting analyzer settings.</li>
 *   <li>Loading index settings and mappings from resources.</li>
 *   <li>Checking the availability of analyzers for supported languages.</li>
 * </ul>
 *
 * <p>Supported languages are defined in the SUPPORTED_LANGUAGES array.</p>
 *
 * <p>Inner class:</p>
 * <ul>

        throw new CrawlerSystemException("GET method is not supported.");
    }

    /**
     * Performs a HEAD request.
     * @param url The URL to request.
     * @return The ResponseData.
     */
    protected ResponseData doHead(final String url) {
        throw new CrawlerSystemException("HEAD method is not supported.");
    }

    /**
     * Performs a POST request.

/**
 * 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. */
        POST,
        /** HTTP HEAD method. */
        HEAD;
    }

    /** OpenSearch client. */
    protected final Client client;
    /** Suggest settings. */
    protected final SuggestSettings settings;
    /** Index name. */
    protected final String indexName;
    /** Supported fields. */
    protected final String[] supportedFields;

    /** Scroll size. */
    protected int scrollSize = 1;
    /** Maximum retry count. */
    protected int maxRetryCount = 5;

     */
    public SuggestIndexer setIndexName(final String index) {
        this.index = index;
        return this;
    }

    /**
     * Sets the supported fields.
     * @param supportedFields The supported fields.
     * @return This SuggestIndexer instance.
     */
    public SuggestIndexer setSupportedFields(final String[] supportedFields) {
        this.supportedFields = supportedFields;

crawler.urlFilter.addInclude("https://example.com/.*");
crawler.urlFilter.addInclude(".*\\.pdf$");

// Exclude patterns  
crawler.urlFilter.addExclude(".*\\.js$");
crawler.urlFilter.addExclude(".*login.*");
```

## Supported Protocols and Formats

### Protocols
- **HTTP/HTTPS**: Full web crawling support with cookies, authentication, redirects
- **File System**: Local and network file system access

        }
    }

    /**
     * Checks if the specified charset is supported.
     *
     * @param charsetName the charset name to check
     * @return true if the charset is supported, false otherwise
     */
    protected boolean isSupportedCharset(final String charsetName) {
        if (charsetName == null) {
            return false;

    }

    /**
     * Default keys for suggest settings.
     */
    public static class DefaultKeys {
        /** Index key. */
        public static final String INDEX = "index";
        /** Supported fields key. */
        public static final String SUPPORTED_FIELDS = "supportedFields";
        /** Tag field name key. */
        public static final String TAG_FIELD_NAME = "tagFieldName";