*   <li>Crawling execution monitoring and timing</li>
 * </ul>
 */
public class DataIndexHelper {

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

    /** Parameter key for controlling deletion of old documents */
    private static final String DELETE_OLD_DOCS = "delete_old_docs";

	</component>
	<component name="webFsIndexHelper" class="org.codelibs.fess.helper.WebFsIndexHelper">
	</component>
	<component name="dataIndexHelper" class="org.codelibs.fess.helper.DataIndexHelper">
	</component>
	<component name="duplicateHostHelper" class="org.codelibs.fess.helper.DuplicateHostHelper">
	</component>

    @Resource
    protected WebFsIndexHelper webFsIndexHelper;

    /** Injected helper for data store indexing operations. */
    @Resource
    protected DataIndexHelper dataIndexHelper;

    /** Injected service for managing path mappings during crawling. */
    @Resource
    protected PathMappingService pathMappingService;