/**
 * Standard transformer implementation for the Fess search engine.
 * This transformer handles document transformation and content extraction using
 * the standard Fess file transformation process with support for various content types.
 *
 * <p>It extends AbstractFessFileTransformer to provide file-specific transformation
 * capabilities while using the appropriate extractor for each document type.</p>
 */

import jakarta.annotation.PostConstruct;

/**
 * File transformer implementation for the Fess search engine.
 * This transformer handles file-based document transformation and content extraction
 * using the Fess file transformation process with support for various file types.
 *
 * <p>It extends AbstractFessFileTransformer to provide specialized file processing

/**
 * Implementation of IndexUpdateCallback for handling document indexing operations.
 * This class manages the process of updating the search index with documents from
 * data stores, including bulk operations, document transformation, and error handling.
 */
public class IndexUpdateCallbackImpl implements IndexUpdateCallback {
    private static final Logger logger = LogManager.getLogger(IndexUpdateCallbackImpl.class);

    /**

    //
    /** Logger for this class. */
    private static final Logger logger = LogManager.getLogger(GoAction.class);

    /** Helper for URL path mapping and transformation. */
    @Resource
    protected PathMappingHelper pathMappingHelper;

    // ===================================================================================

/**
 * Interface for transforming and processing crawled documents in Fess.
 * Provides utility methods for URL processing, site extraction, data mapping,
 * and field configuration handling during the document transformation process.
 */
public interface FessTransformer {

    /**
     * Synchronized LRU cache for storing parent URL encodings.
     * Maps session+parent URL keys to their corresponding character encodings.
     */

        }
    }

    /**
     * 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

 * and components from the Fess Crawler framework, such as {@link CrawlerContainer},
 * {@link UrlConvertHelper}, and {@link EncodingHelper}.
 * </p>
 * <p>
 * The transformation process involves:
 * </p>
 * <ol>
 *   <li>Determining the character set encoding of the HTML content.</li>
 *   <li>Storing the HTML content as data in the {@link ResultData}.</li>

    /**
     * Interface for rewriting search request parameters.
     *
     * Implementations can modify search parameters before they are processed
     * by the search engine, allowing for custom parameter transformation logic.
     */
    public interface SearchRequestParamsRewriter {
        /**
         * Rewrites the given search request parameters.
         *
         * @param params The original search request parameters

            logger.debug("Failed to check index status: indexName={}", indexName, e);
        }
        return exists;
    }

    /**
     * Copies documents from one index to another with optional transformation.
     *
     * @param fromIndex        the source index name
     * @param toIndex          the destination index name
     * @param waitForCompletion whether to wait for the operation to complete

  In order to perform an unsafe deletion of a corrupt resource, the user must enable the option for the delete
  request. A resource is considered corrupt if it can not be successfully retrieved from the storage due to
  a) transformation error e.g. decryption failure, or b) the object failed to decode. Normal deletion flow is
  attempted first, and if it fails with a corrupt resource error then it triggers unsafe delete.