ComponentUtil.getFessConfig().getSystemProperty("rag.llm.name", "ollama"));

            final Map<String, String[]> fields = parseFieldFilters(request);
            final String[] extraQueries = parseExtraQueries(request);
            final ChatResult result;
            if (fields.isEmpty() && extraQueries.length == 0) {
                result = ComponentUtil.getChatClient().chat(sessionId, message, userId);

    /**
     * Creates a sort builder for the specified field and order.
     * This method handles special cases for score fields and regular field sorting.
     *
     * @param field the field name to sort by
     * @param order the sort order (ASC or DESC)
     * @return a configured sort builder
     */
    protected SortBuilder<?> createFieldSortBuilder(final String field, final SortOrder order) {

| Solr Feature | Fess Equivalent |
|--------------|----------------|
| Solr Core | Fess doesn't use cores; all documents in one index |
| 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

        doc.put("lang", "ja");
        doc.put("title", "タイトル");
        // content field is missing

        languageHelper.updateDocument(doc);

        assertEquals("ja", doc.get("lang"));
        assertEquals("タイトル", doc.get("title_ja"));
        assertNull(doc.get("content_ja")); // content field was not present
    }

    @Test
    public void test_getSupportedLanguage_withWhitespace() {

    /**
     * Creates text fragments from highlight fields for URL fragment navigation.
     *
     * @param fields the highlight fields
     * @return array of text fragments
     */
    public TextFragment[] createTextFragmentsByHighlight(final HighlightField[] fields) {
        final List<TextFragment> list = new ArrayList<>();
        for (final HighlightField field : fields) {

     */
    public ReqHeaderPager() {
        // Default constructor - initialization handled by field defaults and clear() method
    }

    /**
     * Clears all pager data and resets to default values.
     * This method resets pagination state and clears all request header fields.
     */
    public void clear() {
        allRecordCount = 0;
        allPageCount = 0;

    }

    /**
     * Stores a document in the index after processing and validation.
     * Handles document transformation, field addition, and batched indexing.
     *
     * @param paramMap the data store parameters
     * @param dataMap the document data to store
     * @throws DataStoreException if required fields are missing or other errors occur
     */
    @Override

            exclusiveMaximum: false
            default: 20
            example: 20
        - name: sort
          in: query
          description: Sorted field name
          required: false
          schema:
            type: string
            example: score
        - name: fields.label
          in: query
          description: Filtered label name
          required: false
          style: form
          explode: true

- **Security:**
Java serialization poses security risks, especially related to deserialization vulnerabilities.

- **Version Compatibility:**
With Java serialization, even minor changes to a class (like adding a field) can break compatibility.

- **Cross-Language Compatibility:**

        String[] fields = (String[]) propMap.get(LOGGING_SEARCH_DOCS_FIELDS);
        if (fields == null) {
            fields = split(getLoggingSearchDocsFields(), ",").get(stream -> stream.map(String::trim).toArray(n -> new String[n]));
            propMap.put(LOGGING_SEARCH_DOCS_FIELDS, fields);
        }
        return fields;
    }

    String getSchedulerTargetName();