return null;
        }
        if (permission.startsWith(fessConfig.getRoleSearchUserPrefix())
                && permission.length() > fessConfig.getRoleSearchUserPrefix().length()) {
            return aclPrefix + userPrefix + permission.substring(fessConfig.getRoleSearchUserPrefix().length());
        }
        if (permission.startsWith(fessConfig.getRoleSearchGroupPrefix())

     * @param loggerName The logger name.
     */
    public void setLoggerName(final String loggerName) {
        this.loggerName = loggerName;
    }

    /**
     * Set the permission separator.
     * @param permissionSeparator The permission separator.
     */
    public void setPermissionSeparator(final String permissionSeparator) {
        this.permissionSeparator = permissionSeparator;
    }

    /**

    }

    /**
     * Checks if a permission string is a user permission.
     *
     * @param permission The permission string.
     * @return true if it is a user permission, false otherwise.
     */
    public boolean isUserPermission(final String permission) {
        if (StringUtil.isNotBlank(permission)) {
            return permission.startsWith(ComponentUtil.getFessConfig().getRoleSearchUserPrefix());

        assertNotNull(timeout.getCause());

        // Scenario 3: Permission denied
        CommandExecutionException permissionDenied = new CommandExecutionException("Permission denied: cannot execute command");
        assertTrue(permissionDenied.getMessage().contains("Permission denied"));

        // Scenario 4: Exit code error

     *
     * @param searchRequestParams The search request parameters
     * @param data The search render data to populate with results
     * @param userBean Optional user information for permission checking
     */
    public void search(final SearchRequestParams searchRequestParams, final SearchRenderData data,
            final OptionalThing<FessUserBean> userBean) {

        assertArrayEquals(permissions, user.getPermissions());

        // Test with empty permissions
        permissions = new String[] {};
        user = new TestFessUser("testuser", new String[] {}, new String[] {}, permissions);
        assertArrayEquals(permissions, user.getPermissions());

        // Test with null permissions

            }, errorHook);
        }
    }

    /**
     * Encodes permission strings into an array.
     *
     * @param permissionsText the permissions text (newline-separated)
     * @return encoded permission array
     */
    protected static String[] encodePermissions(final String permissionsText) {

     * @return The query parser.
     */
    public static QueryParser getQueryParser() {
        return getComponent(QUERY_PARSER);
    }

    /**
     * Gets the permission helper component.
     * @return The permission helper.
     */
    public static PermissionHelper getPermissionHelper() {
        return getComponent(PERMISSION_HELPER);
    }

    /**
     * Gets the SSO manager component.

        }, "activityHelper");

        String[] permissions = ldapUser.getPermissions();

        // Verify permissions include both LDAP roles and user permission
        assertNotNull(permissions);
        assertEquals(3, permissions.length);
        assertEquals("Rgroup1", permissions[0]);
        assertEquals("Rgroup2", permissions[1]);
        assertEquals("Utestuser", permissions[2]);

        // Verify callback was called

 * <ul>
 * <li>Incremental crawling support with last-modified timestamp checking</li>
 * <li>Document expiration handling</li>
 * <li>Child URL extraction and queueing</li>
 * <li>Integration with Fess configuration and permission systems</li>
 * <li>Client selection based on URL patterns</li>
 * </ul>
 *
 * @see CrawlerThread
 * @see org.codelibs.fess.crawler.client.CrawlerClient
 */
public class FessCrawlerThread extends CrawlerThread {