* 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
 * capabilities using the appropriate extractor for each file type.</p>
 */
public class FessFileTransformer extends AbstractFessFileTransformer {
    /**

        }
        return availableSearchers;
    }

    /**
     * Performs concurrent searches using multiple searchers and fuses the results.
     * Executes searches in parallel across all provided searchers, then combines the results
     * using rank fusion algorithms to produce a unified result set.
     *
     * @param searchers array of searchers to use for concurrent searching

 * <li>For high-security applications, consider using AES with GCM mode via {@link #setAlgorithm(String)} and {@link #setTransformation(String)}</li>
 * <li>Ensure keys are securely generated and stored</li>
 * <li>For production systems with stringent security requirements, consider using authenticated encryption modes</li>
 * </ul>
 * <p>
 * <strong>Usage Example:</strong>
 * </p>
 * <pre>

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

/**
 * {@link HashMap} with an upper limit on the number of entries. When a new entry is added, the oldest entry is discarded using LRU if the limit is exceeded.
 * <p>
 * <strong>Thread-Safety:</strong> This class is <strong>NOT thread-safe</strong>.
 * It extends {@link LinkedHashMap} without synchronization. If multiple threads access

                enc = encoding;
            }

            try {
                url = URLDecoder.decode(url, enc);
            } catch (final Exception e) {
                // Failed to decode URL, using original URL as-is
                if (getLogger().isDebugEnabled()) {
                    getLogger().debug("Failed to decode URL with encoding {}: {}", enc, url, e);
                }
            }
        }

import org.codelibs.core.timer.TimeoutManager;

/**
 * Utility class for handling {@link File}.
 * <p>
 * <strong>SECURITY NOTE:</strong> When accepting file paths from untrusted sources,
 * always validate them using {@link #isPathSafe(Path, Path)} to prevent path traversal attacks.
 * Methods that accept path strings do not perform automatic validation to maintain backward compatibility.
 * </p>
 *
 * @author higa
 */

 * 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>
 */

        }

    }

    /**
     * Internal search method that executes the actual search query.
     *
     * This method performs the search using the rank fusion processor and may retry
     * with OR operator if the hit count is below the configured minimum threshold.
     *
     * @param query The search query string
     * @param params The search request parameters

            return new ExtractData(content);
        } catch (final Exception e) {
            throw new ExtractException("Failed to extract text content using encoding: " + getEncoding(), e);
        }
    }

    /**
     * Returns the encoding used for text extraction.
     * @return the encoding
     */
    public String getEncoding() {
        return encoding;

import com.microsoft.aad.msal4j.IAccount;
import com.microsoft.aad.msal4j.IAuthenticationResult;

/**
 * Microsoft Entra ID credential implementation for Fess authentication.
 * Provides login credential functionality using Entra ID authentication results.
 */
public class EntraIdCredential implements LoginCredential, FessCredential {

    private static final Logger logger = LogManager.getLogger(EntraIdCredential.class);