*/
public class CrawlerSystemException extends RuntimeException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new {@code CrawlerSystemException} with the specified detail message and cause.
     *
     * @param message the detail message (which is saved for later retrieval by the {@link #getMessage()} method).

        CrawlerSystemException exception3 = new CrawlerSystemException(runtimeCause);
        assertSame(runtimeCause, exception3.getCause());

        // With another CrawlerSystemException cause
        CrawlerSystemException crawlerCause = new CrawlerSystemException("Crawler cause");
        CrawlerSystemException exception4 = new CrawlerSystemException(crawlerCause);

     */
    public void addClient(final String regex, final CrawlerClient client) {
        if (StringUtil.isBlank(regex)) {
            throw new CrawlerSystemException("A regular expression is null.");
        }
        if (client == null) {
            throw new CrawlerSystemException("CrawlerClient is null.");
        }
        clientMap.put(Pattern.compile(regex), client);
    }

    /**

     *
     * @param accessResult the access result to store
     * @throws CrawlerSystemException if the access result is null or already exists
     */
    @Override
    public void store(final AccessResultImpl<Long> accessResult) {
        if (accessResult == null) {
            throw new CrawlerSystemException("AccessResult is null.");
        }

        synchronized (idCountLock) {
            idCount++;

 * </p>
 *
 */
public abstract class AbstractIntervalController implements IntervalController {

    /**
     * Indicates whether exceptions during the delay process should be ignored.
     * If set to true, exceptions will be caught and ignored. If set to false,
     * exceptions will be re-thrown as {@link CrawlerSystemException}.
     * Default value is true.
     */

     */
    protected ResponseData doGet(final String url) {
        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.");
    }

    /**

import org.codelibs.fess.crawler.entity.AccessResultData;
import org.codelibs.fess.crawler.entity.ResponseData;
import org.codelibs.fess.crawler.entity.ResultData;
import org.codelibs.fess.crawler.exception.CrawlerSystemException;

/**
 * <p>
 * FileTransformer stores the content of a crawled resource as a file on the file system.
 * It extends HtmlTransformer and provides functionality to:
 * </p>
 * <ul>

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.crawler.helper;

import java.util.LinkedHashMap;
import java.util.Map;

import org.codelibs.fess.crawler.exception.CrawlerSystemException;

/**
 * Helper class for converting URLs based on a set of predefined rules.
 *
 * <p>This class provides functionality to convert URLs by replacing parts of the URL

     */
    public void addExtractor(final String key, final Extractor extractor) {
        if (StringUtil.isBlank(key)) {
            throw new CrawlerSystemException("The key is null.");
        }
        if (extractor == null) {
            throw new CrawlerSystemException("The extractor is null.");
        }
        if (extractorMap.containsKey(key)) {
            final Extractor[] existingExtractors = extractorMap.get(key);

     * @throws CrawlerSystemException if the MIME type is blank or maxLength is negative
     */
    public void addMaxLength(final String mimeType, final long maxLength) {
        if (StringUtil.isBlank(mimeType)) {
            throw new CrawlerSystemException("MIME type is a blank.");
        }
        if (maxLength < 0) {
            throw new CrawlerSystemException("The value of maxLength is invalid.");
        }