*/
    public void setPollingFetchSize(final int pollingFetchSize) {
        this.pollingFetchSize = pollingFetchSize;
    }

    /**
     * Sets the maximum crawling queue size.
     * @param maxCrawlingQueueSize The maximum crawling queue size.
     */
    public void setMaxCrawlingQueueSize(final int maxCrawlingQueueSize) {
        this.maxCrawlingQueueSize = maxCrawlingQueueSize;
    }

#### Migration Steps

**Step 1: Set Up Fess Crawling**

1. In Fess Admin, create a new Web crawling configuration
2. Add your website URL as the starting point
3. Configure crawl depth and URL patterns
4. Start crawling

**Step 2: Replace JavaScript Code**

Replace existing GSS/CSE code:

```javascript
<!-- Old GSS/CSE Code -->

        }
    }

    /**
     * Processes a crawling request for a specific URL.
     * Executes the full crawling pipeline including client execution, rule processing,
     * transformation, and data extraction.
     *
     * @param crawlingConfig the crawling configuration to use
     * @param crawlingInfoId the crawling session ID
     * @param url the URL to process

 * This class extends the base CrawlerThread and provides Fess-specific functionality for
 * crawling and indexing documents, including incremental crawling capabilities, content
 * modification checking, and integration with the Fess search engine backend.
 *
 * <p>Key features include:</p>
 * <ul>
 * <li>Incremental crawling support with last-modified timestamp checking</li>
 * <li>Document expiration handling</li>

import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

/**
 * Service class for managing failure URLs that occur during web crawling.
 * Provides functionality to store, retrieve, and manage failed crawling attempts
 * with their associated error information.
 */
public class FailureUrlService {

    /** Logger instance for this class */

        // Test that constructor accepts Error as cause (verifies Throwable parameter change)
        String url = "http://example.com/large-dataset";
        String message = "Crawling failed due to memory exhaustion";
        OutOfMemoryError error = new OutOfMemoryError("Heap space exhausted");

        DataStoreCrawlingException exception = new DataStoreCrawlingException(url, message, error);

import org.codelibs.fess.app.web.admin.crawlinginfo.EditForm;

/**
 * Request body class for crawling info edit operations in the admin REST API.
 * This class extends EditForm to inherit the necessary form validation and binding capabilities
 * for crawling information management operations.
 */
public class EditBody extends EditForm {

    /**
     * Default constructor.
     */

import org.codelibs.fess.util.ComponentUtil;

/**
 * FessIntervalController extends DefaultIntervalController to provide
 * Fess-specific interval control functionality for web crawling operations.
 * This controller manages delays and timing for various crawling states
 * including processing delays, queue waiting times, and new URL discovery.
 */
public class FessIntervalController extends DefaultIntervalController {

 */
public class SearchBody extends BaseSearchBody {

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

    /** The URL that failed during crawling */
    public String url;

    /** Minimum error count filter */
    public Integer errorCountMin;

    /** Maximum error count filter */
    public Integer errorCountMax;

 */
package org.codelibs.fess.exception;

/**
 * Exception thrown when requested content cannot be found.
 * Typically used when a document or resource is not available during crawling or indexing.
 */
public class ContentNotFoundException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**