* OpenSearch queries with appropriate filters and scoring mechanisms.
 */
public class QueryHelper {

    /**
     * Default constructor.
     */
    public QueryHelper() {
        // Default constructor
    }

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

            final QueryHelper queryHelper = ComponentUtil.getQueryHelper();
            if (!roleSet.isEmpty()) {
                queryHelper.buildRoleQuery(roleSet, boolQuery);
            }
            builder.setQuery(boolQuery);
            builder.setFetchSource(fields, null);
            queryHelper.processSearchPreference(builder, userBean, docId);
            return true;

        queryHelper.setSortPrefix("customSort:");
        assertEquals("customSort:", queryHelper.getSortPrefix());
    }

    @Test
    public void test_getAdditionalQuery() {
        assertNull(queryHelper.getAdditionalQuery());
    }

    @Test
    public void test_setAdditionalQuery() {
        queryHelper.setAdditionalQuery("additional query");
        assertEquals("additional query", queryHelper.getAdditionalQuery());

	</component>
	<component name="popularWordHelper" class="org.codelibs.fess.helper.PopularWordHelper">
	</component>
	<component name="queryHelper" class="org.codelibs.fess.helper.QueryHelper">
		<property name="defaultFacetInfo">facetInfo</property>
		<postConstruct name="addQueryRescorer">
			<arg>
				<component class="org.codelibs.fess.score.LtrQueryRescorer" />
			</arg>

         *
         * @param queryHelper the query helper
         * @param queryFieldConfig the query field configuration
         * @param fessConfig the Fess configuration
         */
        protected void buildRescorer(final QueryHelper queryHelper, final QueryFieldConfig queryFieldConfig, final FessConfig fessConfig) {

    @Resource
    protected LabelTypeHelper labelTypeHelper;

    /** Helper for query processing and transformation. */
    @Resource
    protected QueryHelper queryHelper;

    /** Configuration for query field mappings and processing. */
    @Resource
    protected QueryFieldConfig queryFieldConfig;

    /** Helper for role-based query filtering and security. */
    @Resource

        assertTrue(ComponentUtil.hasViewHelper());
    }

    @Test
    public void test_hasQueryHelper() {
        assertFalse(ComponentUtil.hasQueryHelper());

        ComponentUtil.register(new Object(), "queryHelper");
        assertTrue(ComponentUtil.hasQueryHelper());
    }

    @Test
    public void test_hasPopularWordHelper() {
        assertFalse(ComponentUtil.hasPopularWordHelper());

    private static final String SEARCH_LOG_HELPER = "searchLogHelper";

    private static final String LABEL_TYPE_HELPER = "labelTypeHelper";

    private static final String QUERY_HELPER = "queryHelper";

    private static final String QUERY_FIELD_CONFIG = "queryFieldConfig";

    private static final String QUERY_PROCESSOR = "queryProcessor";

    /** Client for interacting with the search engine. */
    @Resource
    protected SearchEngineClient searchEngineClient;

    /** Helper for building and parsing search queries. */
    @Resource
    protected QueryHelper queryHelper;

    /** Helper for executing search operations. */
    @Resource
    protected SearchHelper searchHelper;

    /** HTTP servlet request for accessing request parameters. */
    @Resource

|------|-----------------|
| Add admin feature | `app/web/admin/*/`, `app/service/`, `webapp/WEB-INF/view/admin/` |
| Add API endpoint | `api/`, `app/web/api/` |
| Modify search | `helper/SearchHelper.java`, `helper/QueryHelper.java` |
| Add crawl config | `opensearch/config/`, `crawler/` |
| Add SSO | `sso/`, `fess_sso.xml` |
| Add i18n | `fess_label_*.properties`, `fess_message_*.properties` |

## External Resources