/**
 * Authentication chain implementation that executes external commands for user operations.
 * Provides user management through command-line tool execution for password changes and user deletion.
 */
public class CommandChain implements AuthenticationChain {

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

    /** Working directory for command execution. */
    protected File workingDirectory = null;

        // Default constructor
    }

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

    /**
     * Executes the ping job.
     *
     * @return the execution result
     */
    public String execute() {
        final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

     * ScheduledExecutorService#scheduleWithFixedDelay} method.
     *
     * @param initialDelay the time to delay first execution
     * @param delay the delay between the termination of one execution and the commencement of the
     *     next
     * @since 28.0 (but only since 33.4.0 in the Android flavor)
     */

    public AggregateLogJob() {
        // Default constructor
    }

    /**
     * Executes the search log aggregation job.
     * Stores search logs using the SearchLogHelper and returns execution results.
     *
     * @return execution result message, empty if successful or error message if failed
     */
    public String execute() {
        final SearchLogHelper searchLogHelper = ComponentUtil.getSearchLogHelper();

   *
   * @throws IOException if the request could not be executed due to cancellation, a connectivity
   *     problem or timeout. Because networks can fail during an exchange, it is possible that the
   *     remote server accepted the request before the failure.
   * @throws IllegalStateException when the call has already been executed.
   */
  @Throws(IOException::class)
  fun execute(): Response

  /**

     * ScheduledExecutorService#scheduleWithFixedDelay} method.
     *
     * @param initialDelay the time to delay first execution
     * @param delay the delay between the termination of one execution and the commencement of the
     *     next
     * @since 33.4.0 (but since 28.0 in the JRE flavor)
     */

    protected StatementUtil() {
    }

    /**
     * Executes the SQL.
     *
     * @param statement
     *            {@link Statement}. Must not be {@literal null}.
     * @param sql
     *            SQL string. Must not be {@literal null} or empty.
     * @return The result of the execution.
     * @see Statement#execute(String)
     */
    public static boolean execute(final Statement statement, final String sql) {

Directory for DBFlute client

manage.bat(sh) => 21 (jdbc):
A execution command of JDBC task
which gets your schema info and saves it to SchemaXML
located to the "schema" directory.
This task should be executed after ReplaceSchema task
and before other tasks(e.g. Generate, Document task).

manage.bat(sh) => 22 (doc):
A execution command of Document task
which creates documents, for example, SchemaHTML, HistoryHTML
to the "output/doc" directory.

        // First execution - success
        assertEquals("", aggregateLogJob.execute());

        // Second execution - IllegalArgumentException
        assertTrue(aggregateLogJob.execute().contains("Invalid argument"));

        // Third execution - IllegalStateException
        assertTrue(aggregateLogJob.execute().contains("Invalid state"));

        return (context, query, boost) -> filter.execute(context, query, boost, chain);
    }

    /**
     * Creates the default filter chain that executes query commands.
     * This chain looks up the appropriate query command based on the query class name
     * and executes it. If no command is found, throws an InvalidQueryException.
     *