/**
 * Default implementation of RankFusionSearcher that performs standard OpenSearch queries.
 * This searcher handles query execution, response processing, and document highlighting.
 */
public class DefaultSearcher extends RankFusionSearcher {

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

    /**

| Schema Fields | Define in crawl configuration or use default fields |
| RequestHandlers | Use Fess JSON API with parameters |
| Facet Fields | Configure in Fess search settings |
| Highlighting | Built-in in Fess search results |

---

### Other Search Systems

For proprietary or custom search systems:

#### API-Based Migration

**Step 1: Extract Documents**

 * Data container for search results rendering.
 *
 * This class holds all the data needed to render search results in the UI,
 * including the actual search results, pagination information, facet data,
 * execution timing, and highlighting parameters.
 */
public class SearchRenderData {

    /** List of search result documents. */
    protected List<Map<String, Object>> documentItems;

    /** Facet response containing aggregated search facets. */

        queryContext = new QueryContext("test", true);
        assertEquals("test", queryContext.getQueryString());

        // Verify that highlighting and field log are initialized
        assertNotNull(getMockRequest().getAttribute(Constants.HIGHLIGHT_QUERIES));
        assertNotNull(getMockRequest().getAttribute(Constants.FIELD_LOGS));
    }

        }

        /**
         * The list of documents returned in the search results.
         */
        protected List<Map<String, Object>> docs;
        /**
         * Parameters for highlighting search results.
         */
        protected String highlightParams;
        /**
         * The execution time of the search query.
         */
        protected String execTime;
        /**

/**
 * Configuration class for query field mappings in the Fess search engine.
 * This class manages field configurations for various query operations including
 * response fields, search fields, facet fields, sort fields, and highlighting.
 * It initializes field mappings from the FessConfig and provides methods to
 * query field properties and capabilities.
 */
public class QueryFieldConfig {

    /**
     * Default constructor.
     */

    /** Text fragments feature identifier. */
    public static final String TEXT_FRAGMENTS = "text_fragments";

    /** Text fragment type for query highlighting. */
    public static final String TEXT_FRAGMENT_TYPE_QUERY = "query";

    /** Text fragment type for result highlighting. */
    public static final String TEXT_FRAGMENT_TYPE_HIGHLIGHT = "highlight";

    /** Crawler statistics key identifier. */

            //we're making an assumption that all <pre> elements contain java code
            //this should mostly be true :)
            //if it isn't true then the syntax highlighting won't spoil the view too much anyway
            newElement.setAttribute("language", "java");
            nodes.push(newElement);
            return true;
        }

        @Override

        if (input == null) {
            return StringUtil.EMPTY;
        }
        return input.toString().replaceAll(regex, replacement);
    }

    /**
     * Formats code content with syntax highlighting and line numbers.
     *
     * @param prefix the line number prefix pattern
     * @param style the CSS class name for styling
     * @param mimetype the MIME type of the content (currently unused)

        viewHelper.init();

        HighlightInfo highlightInfo = new HighlightInfo();
        int originalSize = highlightInfo.getFragmentSize();

        viewHelper.updateHighlightInfo(highlightInfo, 500);
        Assertions.assertEquals((int) (originalSize * 0.65), highlightInfo.getFragmentSize(), 10);

        highlightInfo = new HighlightInfo();
        viewHelper.updateHighlightInfo(highlightInfo, 300);