import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;

/**
 * A serializer class for handling object serialization and deserialization.
 * <p>
 * This class provides serialization capabilities using different serializers,
 * currently supporting Kryo and JavaBin serialization formats. The serializer
 * type is determined by the crawler data serializer configuration.
 * </p>
 * <p>

 * response fields, search fields, facet fields, sort fields, and highlighting.
 * It initializes field mappings from the FessConfig and provides methods to
 * query field properties and capabilities.
 */
public class QueryFieldConfig {

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

    /** Logger instance for this class */

import java.util.List;

import org.codelibs.fess.util.ComponentUtil;

/**
 * A pager class for file authentication entries, providing pagination functionality
 * for file authentication configurations with search and display capabilities.
 */
public class FileAuthPager implements Serializable {

    private static final long serialVersionUID = 1L;

    /**
     * Default constructor for file authentication pager.

/**
 * A pager class for managing pagination of failure URL records.
 * This class provides functionality to handle pagination of failed crawler URLs
 * with search filters and navigation capabilities.
 */
public class FailureUrlPager implements Serializable {

    /** Serial version UID for serialization compatibility. */
    private static final long serialVersionUID = 1L;

    /**

        client.execute(action, request, listener);
    }

    /**
     * Prepares a field capabilities request builder.
     *
     * @param indices the indices to check field capabilities for
     * @return the field capabilities request builder
     */
    @Override
    public FieldCapabilitiesRequestBuilder prepareFieldCaps(final String... indices) {

 * href="https://github.com/google/guava/wiki/GraphsExplained#choosing-the-right-graph-type">
 * "Choosing the right graph type"</a> section of the Guava User Guide for more details.
 *
 * <h3>Capabilities</h3>
 *
 * <p>{@code Network} supports the following use cases (<a
 * href="https://github.com/google/guava/wiki/GraphsExplained#definitions">definitions of
 * terms</a>):
 *
 * <ul>
 *   <li>directed graphs

 * 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>

    ```kotlin
    implementation("com.squareup.okio:okio:2.7.0")
    ```

 *  Fix: Avoid log messages like "Didn't find class org.conscrypt.ConscryptHostnameVerifier" when
    detecting the TLS capabilities of the host platform.

 *  Fix: Don't crash in `HttpUrl.topPrivateDomain()` when the hostname is malformed.

 *  Fix: Don't attempt Brotli decompression if the response body is empty.


## Version 4.7.2

     * Adds the searcher to the searchers array and initializes the executor service
     * if it hasn't been created yet. The executor service is created with a thread pool
     * sized based on configuration or system capabilities.
     *
     * @param searcher the RankFusionSearcher to register
     */
    public void register(final RankFusionSearcher searcher) {
        if (logger.isDebugEnabled()) {

 * </ul>
 *
 * <p>The updater runs continuously until crawling is finished and all documents are processed.
 * It includes error handling, retry logic, and performance monitoring capabilities.
 *
 */
public class IndexUpdater extends Thread {
    /** Logger for this class */
    private static final Logger logger = LogManager.getLogger(IndexUpdater.class);